CN115823243A - Clutch state detection method and detection device - Google Patents
Clutch state detection method and detection device Download PDFInfo
- Publication number
- CN115823243A CN115823243A CN202211461842.8A CN202211461842A CN115823243A CN 115823243 A CN115823243 A CN 115823243A CN 202211461842 A CN202211461842 A CN 202211461842A CN 115823243 A CN115823243 A CN 115823243A
- Authority
- CN
- China
- Prior art keywords
- clutch
- torque
- power device
- state
- transmission
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000001514 detection method Methods 0.000 title claims abstract description 49
- 230000005540 biological transmission Effects 0.000 claims abstract description 138
- 239000000110 cooling liquid Substances 0.000 claims abstract description 37
- 238000000034 method Methods 0.000 claims abstract description 29
- 239000002826 coolant Substances 0.000 claims description 9
- 230000036541 health Effects 0.000 claims description 6
- 239000003921 oil Substances 0.000 description 55
- 238000010586 diagram Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 2
- 238000003745 diagnosis Methods 0.000 description 2
- 239000010720 hydraulic oil Substances 0.000 description 2
- 230000001050 lubricating effect Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/62—Hybrid vehicles
Landscapes
- Hydraulic Clutches, Magnetic Clutches, Fluid Clutches, And Fluid Joints (AREA)
Abstract
The invention discloses a method and a device for detecting the state of a clutch, wherein the method for detecting the state of the clutch comprises the following steps: when a power device and a transmission of a vehicle are not in a fault state, acquiring the rotating speed of the power device, the torque of the power device, the temperature of cooling liquid of the power device, the rotating speed of a clutch, the command pressure of the clutch, the gear position of the transmission, the oil temperature of the transmission, the speed of the vehicle, the opening degree of an accelerator pedal and the opening degree of a brake pedal; wherein, the power device comprises an engine or a motor; and when the rotating speed of the power device, the temperature of cooling liquid of the power device, the rotating speed of the clutch, the command pressure of the clutch, the gear position of the transmission, the oil temperature of the transmission, the vehicle speed, the opening degree of an accelerator pedal and the opening degree of a brake pedal all meet preset conditions, determining the state of the clutch according to the torque of the power device. The invention can detect the state of the clutch on the whole vehicle in real time, improve the fault detection precision of the clutch, reduce the fault misjudgment rate and effectively improve the safety of the vehicle.
Description
Technical Field
The invention relates to the technical field of automobiles, in particular to a method and a device for detecting the state of a clutch.
Background
The clutch is an important part of the automobile power system, which is responsible for the work of cutting off and connecting the power and directly determines whether the automobile can run normally. The automobile clutch can ensure the power transmission continuity and smoothness in the vehicle stable starting and gear shifting period and prevent the system from overloading during emergency braking or excessive torque, and has important influence on the driving quality and safety of the automobile.
The state detection of the clutch is particularly important, the existing detection method of the clutch on the whole vehicle mainly judges through the speed difference value of the driving end and the driven end of the clutch, and because the factors influencing the speed difference of the clutch are more, the judgment precision of the judgment method needs to be improved, and the possibility of error judgment of faults is higher.
Disclosure of Invention
The invention provides a method and a device for detecting the state of a clutch, which can detect the state of the clutch on a whole vehicle in real time, improve the fault detection precision of the clutch, reduce the fault misjudgment rate and effectively improve the safety of the vehicle.
According to an aspect of the present invention, there is provided a state detection method of a clutch, including:
when a power device and a transmission of a vehicle are not in a fault state, acquiring the rotating speed of the power device, the torque of the power device, the temperature of cooling liquid of the power device, the rotating speed of a clutch, the command pressure of the clutch, the gear position of the transmission, the oil temperature of the transmission, the speed of the vehicle, the opening degree of an accelerator pedal and the opening degree of a brake pedal; wherein, the power device comprises an engine or a motor;
and when the rotating speed of the power device, the temperature of cooling liquid of the power device, the rotating speed of the clutch, the command pressure of the clutch, the gear position of the transmission, the oil temperature of the transmission, the vehicle speed, the opening degree of an accelerator pedal and the opening degree of a brake pedal all meet preset conditions, determining the state of the clutch according to the torque of the power device.
Optionally, determining the state of the clutch based on the powerplant torque comprises:
and comparing the torque of the power device with a torque threshold value corresponding to the oil temperature of the transmission, and determining the state of the clutch according to the comparison result, wherein different oil temperatures of the transmission correspond to different torque threshold values.
Optionally, the torque threshold corresponding to the transmission oil temperature includes a first torque threshold, a second torque threshold, a third torque threshold and a fourth torque threshold; wherein the fourth torque threshold is less than the second torque threshold, the second torque threshold is less than the first torque threshold, and the first torque threshold is less than the third torque threshold;
comparing the torque of the power device with a torque threshold value corresponding to the oil temperature of the transmission, and determining the state of the clutch according to the comparison result comprises the following steps:
determining that the clutch is in a healthy state when the powerplant torque is greater than or equal to the second torque threshold and less than or equal to the first torque threshold;
determining that the clutch is in a sub-health state when the powerplant torque is greater than the first torque threshold and less than or equal to a third torque threshold, or the powerplant torque is less than the second torque threshold and greater than or equal to a fourth torque threshold;
the clutch is determined to be in the fault state when the powerplant torque is less than the fourth torque threshold or greater than the third torque threshold.
Optionally, after determining that the clutch is in the sub-health state, the method further includes:
sending reminding information to a driver;
after determining that the clutch is in the fault state, further comprising:
the transmission is controlled to enter a fault mode and a fault light is illuminated by the gauge.
Optionally, when power plant rotational speed, power plant coolant temperature, clutch rotational speed, clutch command pressure, derailleur gear, derailleur oil temperature, speed of a vehicle, accelerator pedal aperture and brake pedal aperture all satisfy preset conditions, confirm the state of clutch according to power plant moment of torsion, include:
when the rotating speed of the power device is in a first set detection range, the temperature of cooling liquid of the power device is in a second set detection range, the rotating speed of a clutch is 0r/min, the command pressure of the clutch is 0bar, a transmission is in a gear state, the oil temperature of the transmission is in a third set detection range, the vehicle speed is 0km/h, the opening degree of an accelerator pedal is 0%, and a brake pedal switch is in a non-treading state, the state of the clutch is determined according to the torque of the power device.
Optionally, gather power device rotational speed, power device moment of torsion, power device coolant temperature, clutch rotational speed, clutch command pressure, derailleur fender position, derailleur oil temperature, speed of a vehicle, accelerator pedal aperture and brake pedal aperture, include:
reading the rotating speed of a power device, the torque of the power device, the temperature of cooling liquid of the power device, the rotating speed of a clutch, the command pressure of the clutch, the gear position of a transmission, the oil temperature of the transmission, the vehicle speed, the opening degree of an accelerator pedal and the opening degree of a brake pedal through a diagnostic port by using a diagnostic instrument;
or reading the rotating speed of a power device, the torque of the power device, the temperature of cooling liquid of the power device, the rotating speed of a clutch, the command pressure of the clutch, the gear position of a transmission, the oil temperature of the transmission, the speed of a vehicle, the opening degree of an accelerator pedal and the opening degree of a brake pedal by a control unit of the whole vehicle;
or, the rotating speed of the power device and the rotating speed of the clutch are acquired through a rotating speed sensor, the temperature of cooling liquid of the power device and the oil temperature of a transmission are acquired through a temperature sensor, the torque of the power device is acquired through a torque sensor, the command pressure of the clutch is acquired through a pressure sensor, the gear of the transmission is acquired through a position sensor, the opening degree of an accelerator pedal is acquired through an opening degree sensor of the accelerator pedal, and the brake pedal is acquired through a brake pedal sensor.
According to another aspect of the present invention, there is provided a state detecting device of a clutch, including:
the data acquisition module is used for acquiring the rotating speed of the power device, the torque of the power device, the temperature of cooling liquid of the power device, the rotating speed of a clutch, the command pressure of the clutch, the gear position of the transmission, the oil temperature of the transmission, the speed of a vehicle, the opening of an accelerator pedal and the opening of a brake pedal when the power device and the transmission of the vehicle are not in a fault state; wherein, the power device comprises an engine or a motor;
and the state determination module is used for determining the state of the clutch according to the torque of the power device when the rotating speed of the power device, the cooling liquid temperature of the power device, the rotating speed of the clutch, the command pressure of the clutch, the gear position of the transmission, the oil temperature of the transmission, the vehicle speed, the opening degree of an accelerator pedal and the opening degree of a brake pedal all meet preset conditions.
Optionally, the state detection device is specifically configured to:
and comparing the torque of the power device with a torque threshold value corresponding to the oil temperature of the transmission, and determining the state of the clutch according to the comparison result, wherein different oil temperatures of the transmission correspond to different torque threshold values.
Optionally, the torque threshold value corresponding to the transmission oil temperature includes a first torque threshold value, a second torque threshold value, a third torque threshold value and a fourth torque threshold value; wherein the fourth torque threshold is less than the second torque threshold, the second torque threshold is less than the first torque threshold, and the first torque threshold is less than the third torque threshold;
a state determination module comprising:
a state of health determination unit for determining that the clutch is in a state of health when the powerplant torque is greater than or equal to the second torque threshold and less than or equal to the first torque threshold;
a sub-health state determination unit for determining that the clutch is in a sub-health state when the powerplant torque is greater than the first torque threshold and less than or equal to a third torque threshold, or the powerplant torque is less than the second torque threshold and greater than or equal to a fourth torque threshold;
and the fault state determination unit is used for determining that the clutch is in the fault state when the torque of the power device is smaller than the fourth torque threshold value or larger than the third torque threshold value.
Optionally, the state detecting device further includes:
the information reminding module is used for sending reminding information to a driver after the clutch is determined to be in the sub-health state;
the state detection device further includes:
and the fault reminding module is used for controlling the transmission to enter a fault mode and lightening a fault lamp through an instrument after the clutch is determined to be in a fault state.
According to the embodiment of the invention, when a power device and a transmission of a vehicle are not in a fault state, the rotating speed of the power device, the torque of the power device, the temperature of cooling liquid of the power device, the rotating speed of a clutch, the command pressure of the clutch, the gear position of the transmission, the oil temperature of the transmission, the vehicle speed, the opening degree of an accelerator pedal and the opening degree of a brake pedal are collected; and when the rotating speed of the power device, the temperature of cooling liquid of the power device, the rotating speed of the clutch, the command pressure of the clutch, the gear position of the transmission, the oil temperature of the transmission, the vehicle speed, the opening degree of an accelerator pedal and the opening degree of a brake pedal all meet preset conditions, determining the state of the clutch according to the torque of the power device. The clutch can be detected due to the characteristic that the clutch has drag torque, the drag torque of the clutch can be represented by the torque of the power device, the current clutch state is determined by monitoring the torque of the power device in real time, and relevant alarm prompt or a fault mode is carried out according to the current clutch state. The detection method can detect the state of the clutch on the whole vehicle in real time, improve the fault detection precision of the clutch, reduce the fault misjudgment rate and effectively improve the safety of the vehicle.
It should be understood that the statements in this section do not necessarily identify key or critical features of the embodiments of the present invention, nor do they necessarily limit the scope of the invention. Other features of the present invention will become apparent from the following description.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a flowchart illustrating a method for detecting a state of a clutch according to an embodiment of the present invention;
FIG. 2 is a schematic diagram illustrating a state detection of a clutch according to an embodiment of the present invention;
FIG. 3 is a flowchart illustrating a method for detecting a state of a clutch according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a state detection device of a clutch according to a second embodiment of the present invention.
Detailed Description
In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in other sequences than those illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
Example one
An embodiment of the present invention provides a method for detecting a state of a clutch, and fig. 1 is a flowchart of a method for detecting a state of a clutch according to an embodiment of the present invention, and referring to fig. 1, the method for detecting a state of a clutch includes:
The control unit detects whether the power device and the transmission of the vehicle are in a fault state by acquiring information data of the power device and the transmission of the vehicle, and when the power device and the transmission of the vehicle are in the fault state, the control unit indicates that the current state does not meet the condition for detecting the clutch and does not detect the state of the clutch; when the power device and the transmission of the vehicle are not in a fault state, the rotating speed of the power device, the torque of the power device, the cooling liquid temperature of the power device, the rotating speed of the clutch, the command pressure of the clutch, the gear position of the transmission, the oil temperature of the transmission, the vehicle speed, the opening degree of an accelerator pedal and the opening degree of a brake pedal can be collected through a diagnostic instrument, a control unit of the whole vehicle and a sensor. When the vehicle is an oil vehicle, the power device is an engine; when the vehicle is an electric vehicle, the power device is a motor.
And step 120, when the rotating speed of the power device, the cooling liquid temperature of the power device, the rotating speed of the clutch, the command pressure of the clutch, the gear position of the transmission, the oil temperature of the transmission, the vehicle speed, the opening degree of an accelerator pedal and the opening degree of a brake pedal all meet preset conditions, determining the state of the clutch according to the torque of the power device.
The preset conditions are generally determined according to the actual vehicle performance of the whole vehicle and the most common temperature use intervals of the power device and the transmission. When the rotating speed of the power device, the temperature of cooling liquid of the power device, the rotating speed of the clutch, the clutch command pressure, the gear position of the transmission, the oil temperature of the transmission, the vehicle speed, the opening degree of an accelerator pedal and the opening degree of a brake pedal all meet preset conditions, a clutch detection mode is started, and the state of the clutch is determined according to the area where the torque of the power device is located, wherein the state of the clutch can be a healthy state, a sub-healthy state and a fault state.
Specifically, through a test of a plurality of clutch racks, it is found that when a certain lubricating flow is provided, although there is no clutch command pressure, a certain dragging torque is generated due to the fact that hydraulic oil exists between the clutch driving plate and the clutch driven plate, when the lubricating hydraulic oil flow between the clutches is constant, the size of the dragging torque has a direct relation with the oil temperature, and the condition that the clutch is in an abnormal state is represented when the dragging torque is too large or too small. The drag torque of the clutch can be represented by the torque of the power device, so the drag torque of the clutch is expressed by the torque of the engine or the motor, and the state of the clutch is detected by comparing the drag torque with a torque threshold value corresponding to the current oil temperature of the transmission.
According to the embodiment of the invention, when a power device and a transmission of a vehicle are not in a fault state, the rotating speed of the power device, the torque of the power device, the temperature of cooling liquid of the power device, the rotating speed of a clutch, the command pressure of the clutch, the gear position of the transmission, the oil temperature of the transmission, the vehicle speed, the opening degree of an accelerator pedal and the opening degree of a brake pedal are collected; and when the rotating speed of the power device, the temperature of cooling liquid of the power device, the rotating speed of the clutch, the command pressure of the clutch, the gear position of the transmission, the oil temperature of the transmission, the vehicle speed, the opening degree of an accelerator pedal and the opening degree of a brake pedal all meet preset conditions, determining the state of the clutch according to the torque of the power device. The clutch can be detected due to the characteristic that the clutch has drag torque, the drag torque of the clutch can be represented by the torque of the power device, the current clutch state is determined by monitoring the torque of the power device in real time, and relevant alarm prompt or a fault mode is carried out according to the current clutch state. The detection method can detect the state of the clutch on the whole vehicle in real time, improve the fault detection precision of the clutch, reduce the fault misjudgment rate and effectively improve the safety of the vehicle.
Optionally, determining the state of the clutch based on the powerplant torque comprises:
and comparing the torque of the power device with a torque threshold value corresponding to the oil temperature of the transmission, and determining the state of the clutch according to the comparison result, wherein different oil temperatures of the transmission correspond to different torque threshold values.
The torque threshold value can comprise an upper limit value of the clutch in the optimal state, a lower limit value of the clutch in the optimal state, an upper limit value of the clutch in the normal state and a lower limit value of the clutch in the normal state, the torque threshold value corresponding to the torque of the power device and the oil temperature of the transmission is compared, and the state of the clutch is determined according to the area where the torque of the power device is located.
Alternatively, fig. 2 is a schematic diagram of a state detection of a clutch according to an embodiment of the present invention, and referring to fig. 2, torque thresholds corresponding to a transmission oil temperature include a first torque threshold, a second torque threshold, a third torque threshold, and a fourth torque threshold; wherein the fourth torque threshold is less than the second torque threshold, the second torque threshold is less than the first torque threshold, and the first torque threshold is less than the third torque threshold; comparing the torque of the power device with a torque threshold value corresponding to the oil temperature of the transmission, and determining the state of the clutch according to the comparison result comprises the following steps:
determining that the clutch is in a healthy state when the powerplant torque is greater than or equal to the second torque threshold and less than or equal to the first torque threshold; determining that the clutch is in a sub-health state when the powerplant torque is greater than the first torque threshold and less than or equal to a third torque threshold, or the powerplant torque is less than the second torque threshold and greater than or equal to a fourth torque threshold; the clutch is determined to be in the fault state when the powerplant torque is less than the fourth torque threshold or greater than the third torque threshold.
The first torque threshold value is an upper limit value of the clutch in an optimal state, the second torque threshold value is a lower limit value of the clutch in the optimal state, the third torque threshold value is an upper limit value of the clutch in a normal state, and the fourth torque threshold value is a lower limit value of the clutch in the normal state. When the power device torque is larger than or equal to the second torque threshold value and smaller than or equal to the first torque threshold value, the clutch is determined to be in a healthy state, and normal driving can be carried out. And when the torque of the power device is larger than the first torque threshold value and is smaller than or equal to the third torque threshold value, determining that the clutch is in a sub-health state and the clutch risks adhesion failure, or when the torque of the power device is smaller than the second torque threshold value and is larger than or equal to the fourth torque threshold value, determining that the clutch is in a sub-health state and the clutch risks slip failure. And when the torque of the power device is larger than the third torque threshold value, the clutch is determined to be in the fault state, and the clutch is determined to be in the adhesion fault immediately.
Optionally, after determining that the clutch is in the sub-health state, the method further includes: and sending reminding information to the driver. After determining that the clutch is in the fault state, further comprising: the transmission is controlled to enter a fault mode and a fault light is illuminated by the gauge.
Wherein, after determining that the clutch is in a sub-healthy state, indicating that the vehicle is at risk of failure, the driver may be presented with via the meter: the information such as the driver should go to the 4S store to detect the abnormal clutch state, and the warning information may be in another form, for example, voice information. If the clutch is determined to be in the fault state, the potential safety hazard is large if the vehicle is continuously driven, the transmission is controlled to enter the fault mode, the fault lamp is lightened through the instrument, and the driver is reminded to stop the vehicle
Optionally, when the power plant rotation speed, the power plant coolant temperature, the clutch rotation speed, the clutch command pressure, the transmission gear, the transmission oil temperature, the vehicle speed, the accelerator pedal opening degree, and the brake pedal opening degree all satisfy preset conditions, determining the state of the clutch according to the power plant torque, including:
when the rotating speed of the power device is in a first set detection range, the temperature of cooling liquid of the power device is in a second set detection range, the rotating speed of a clutch is 0r/min, the command pressure of the clutch is 0bar, a transmission is in a gear state, the oil temperature of the transmission is in a third set detection range, the vehicle speed is 0km/h, the opening degree of an accelerator pedal is 0%, and a brake pedal switch is in a non-treading state, the state of the clutch is determined according to the torque of the power device.
The method comprises the steps that the rotating speed of a power device, the torque of the power device, the temperature of cooling liquid of the power device, the rotating speed of a clutch, the command pressure of the clutch, the gear position of a transmission, the oil temperature of the transmission, the vehicle speed, the opening degree of an accelerator pedal and the opening degree of a brake pedal can be acquired through a diagnostic instrument, a control unit of a whole vehicle and a sensor, and the rotating speed n of the power device in a first set detection range n is judged through acquired data 1 <n<n 2 Power plant coolant temperature T e Within the second set detection range T e1 <T e <T e2 The rotating speed of the clutch is 0r/min, the command pressure of the clutch is 0bar, the transmission is in a gear state, and the oil temperature T of the transmission is c Within a third set detection range T c1 <T c <T c2 The vehicle speed is 0km/h, the opening degree of an accelerator pedal is 0%, and a brake pedal switch is in an un-treaded state, wherein the limit value is set as n 1 、n 2 、T e1 、T e2 、T c2 、T c2 Generally, the temperature is determined according to the actual vehicle performance of the whole vehicle and the most common temperature use interval of an engine and a transmission. If the conditions are met, the current first torque threshold value, the current second torque threshold value, the current third torque threshold value and the current fourth torque threshold value can be determined through the oil temperature of the transmission, so that the range of the collected torque of the power device is determined, and the state of the clutch is determined according to the range of the torque of the power device.
Optionally, gather power device rotational speed, power device moment of torsion, power device coolant temperature, clutch rotational speed, clutch command pressure, derailleur fender position, derailleur oil temperature, speed of a vehicle, accelerator pedal aperture and brake pedal aperture, include:
the diagnostic is used to read the power plant speed, power plant torque, power plant coolant temperature, clutch speed, clutch command pressure, transmission gear, transmission oil temperature, vehicle speed, accelerator pedal opening, and brake pedal opening through the diagnostic port.
Or the control unit of the whole vehicle reads the rotating speed of the power device, the torque of the power device, the temperature of cooling liquid of the power device, the rotating speed of the clutch, the command pressure of the clutch, the gear position of the transmission, the oil temperature of the transmission, the vehicle speed, the opening degree of an accelerator pedal and the opening degree of a brake pedal.
Or, the rotating speed of the power device and the rotating speed of the clutch are acquired through a rotating speed sensor, the temperature of cooling liquid of the power device and the oil temperature of a transmission are acquired through a temperature sensor, the torque of the power device is acquired through a torque sensor, the command pressure of the clutch is acquired through a pressure sensor, the gear of the transmission is acquired through a position sensor, the opening degree of an accelerator pedal is acquired through an opening degree sensor of the accelerator pedal, and the brake pedal is acquired through a brake pedal sensor.
The diagnostic instrument can receive data information, wherein the data information comprises fault information, real-time operation parameters of the control computer and mutual control instructions between the control computer and the diagnosis. Upon receiving these signal data, the diagnostic instrument displays them as corresponding characters and numbers according to a predetermined communication protocol so that maintenance personnel can observe the operational state of the system and analyze the contents to find out unreasonable or incorrect information for fault diagnosis. The control unit of the whole vehicle is a control device for realizing a series of functions such as analysis, processing and transmission of data, and can store, calculate, analyze and process information, store operation information and fault information, analyze input information, analyze the input information, and perform corresponding calculation, processing and output.
Specifically, fig. 3 is a flowchart of a method for detecting a state of a clutch according to a first embodiment of the present invention, and referring to fig. 3, the method for detecting a state of a clutch includes:
and step 210, detecting whether the power device and the transmission are in a fault state. If yes, go to step 230, if no, go to step 220.
And step 240, judging whether the rotating speed of the power device, the cooling liquid temperature of the power device, the rotating speed of the clutch, the command pressure of the clutch, the gear position of the transmission, the oil temperature of the transmission, the vehicle speed, the opening degree of an accelerator pedal and the opening degree of a brake pedal meet preset conditions. If yes, go to step 250, otherwise go to step 230.
And step 290, sending reminding information to the driver.
And step 300, controlling the transmission to enter a fault mode and lighting a fault lamp through the instrument.
According to the technical scheme of the embodiment of the invention, the torque of the power device is compared with the torque threshold value corresponding to the current oil temperature of the transmission, and the state of the clutch is determined according to the comparison result; and associated alarm prompts or failure modes are made based on the state of the clutch. The detection method can identify the boundary of the clutch about to break down in advance, improve the fault detection precision of the clutch, reduce the fault misjudgment rate, prompt a driver to carry out corresponding safety detection on the vehicle in advance, and effectively improve the safety of the vehicle.
Example two
An embodiment of the present invention provides a state detection device for a clutch on the basis of the above-mentioned embodiment, fig. 4 is a schematic structural diagram of a state detection device for a clutch according to a second embodiment of the present invention, and referring to fig. 4, the state detection device for a clutch includes:
the data acquisition module 100 is used for acquiring the rotating speed of a power device, the torque of the power device, the temperature of cooling liquid of the power device, the rotating speed of a clutch, the command pressure of the clutch, the gear position of the transmission, the oil temperature of the transmission, the speed of a vehicle, the opening of an accelerator pedal and the opening of a brake pedal when the power device and the transmission of the vehicle are not in a fault state; wherein, the power device comprises an engine or a motor;
the state determination module 200 is configured to determine a state of the clutch according to the power plant torque when the power plant rotational speed, the power plant coolant temperature, the clutch rotational speed, the clutch command pressure, the transmission gear, the transmission oil temperature, the vehicle speed, the accelerator pedal opening, and the brake pedal opening all satisfy preset conditions.
Optionally, the state detection device is specifically configured to:
and comparing the torque of the power device with a torque threshold value corresponding to the oil temperature of the transmission, and determining the state of the clutch according to the comparison result, wherein different oil temperatures of the transmission correspond to different torque threshold values.
Optionally, the torque threshold corresponding to the transmission oil temperature includes a first torque threshold, a second torque threshold, a third torque threshold and a fourth torque threshold; wherein the fourth torque threshold is less than the second torque threshold, the second torque threshold is less than the first torque threshold, and the first torque threshold is less than the third torque threshold;
a state determination module comprising:
a state of health determination unit for determining that the clutch is in a state of health when the powerplant torque is greater than or equal to the second torque threshold and less than or equal to the first torque threshold;
a sub-health state determination unit for determining that the clutch is in a sub-health state when the powerplant torque is greater than the first torque threshold and less than or equal to a third torque threshold, or the powerplant torque is less than the second torque threshold and greater than or equal to a fourth torque threshold;
and the fault state determination unit is used for determining that the clutch is in the fault state when the torque of the power device is smaller than the fourth torque threshold value or larger than the third torque threshold value.
Optionally, the state detection device further includes:
the information reminding module is used for sending reminding information to a driver after the clutch is determined to be in the sub-health state;
the state detection device further includes:
and the fault reminding module is used for controlling the transmission to enter a fault mode and lightening a fault lamp through an instrument after the clutch is determined to be in a fault state.
Optionally, the state determining module is specifically configured to:
when the rotating speed of the power device is in a first set detection range, the temperature of cooling liquid of the power device is in a second set detection range, the rotating speed of a clutch is 0r/min, the command pressure of the clutch is 0bar, a transmission is in a gear state, the oil temperature of the transmission is in a third set detection range, the vehicle speed is 0km/h, the opening degree of an accelerator pedal is 0%, and a brake pedal switch is in a non-treading state, the state of the clutch is determined according to the torque of the power device.
Optionally, the data acquisition module includes:
the diagnostic instrument acquisition submodule is used for reading the rotating speed of the power device, the torque of the power device, the temperature of cooling liquid of the power device, the rotating speed of a clutch, the command pressure of the clutch, the gear position of a transmission, the oil temperature of the transmission, the vehicle speed, the opening degree of an accelerator pedal and the opening degree of a brake pedal through a diagnostic opening by using the diagnostic instrument;
the whole vehicle control unit acquisition submodule is used for reading the rotating speed of a power device, the torque of the power device, the temperature of cooling liquid of the power device, the rotating speed of a clutch, the command pressure of the clutch, the gear position of a transmission, the oil temperature of the transmission, the vehicle speed, the opening degree of an accelerator pedal and the opening degree of a brake pedal through a control unit of a whole vehicle;
the sensor acquisition submodule is used for acquiring the rotating speed of the power device and the rotating speed of the clutch or by a rotating speed sensor, acquiring the temperature of cooling liquid of the power device and the oil temperature of a transmission by a temperature sensor, acquiring the torque of the power device by a torque sensor, acquiring the command pressure of the clutch by a pressure sensor, acquiring the gear of the transmission by a position sensor, acquiring the opening degree of an accelerator pedal by an opening degree sensor of the accelerator pedal, and acquiring a brake pedal by a brake pedal sensor.
The method for detecting the state of the clutch in the device for detecting the state of the clutch provided by the embodiment of the invention and the method for detecting the state of the clutch provided by the embodiment of the invention belong to the same inventive concept, have the same beneficial effects, and detailed technical details in the embodiment are not found in the method for detecting the state of the clutch provided by any embodiment of the invention.
The above-described embodiments should not be construed as limiting the scope of the invention. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions may be made in accordance with design requirements and other factors. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A method of detecting a state of a clutch, comprising:
when a power device and a transmission of a vehicle are not in a fault state, acquiring the rotating speed of the power device, the torque of the power device, the temperature of cooling liquid of the power device, the rotating speed of a clutch, the command pressure of the clutch, the gear position of the transmission, the oil temperature of the transmission, the speed of the vehicle, the opening degree of an accelerator pedal and the opening degree of a brake pedal; wherein the power plant comprises an engine or an electric machine;
and when the power device rotating speed, the power device cooling liquid temperature, the clutch rotating speed, the clutch command pressure, the transmission gear, the transmission oil temperature, the vehicle speed, the accelerator pedal opening and the brake pedal opening all meet preset conditions, determining the state of the clutch according to the power device torque.
2. The method of claim 1, wherein determining the state of the clutch based on the powerplant torque comprises:
and comparing the torque of the power device with a torque threshold value corresponding to the oil temperature of the transmission, and determining the state of the clutch according to the comparison result, wherein different oil temperatures of the transmission correspond to different torque threshold values.
3. The method of claim 2, wherein the torque threshold values for the transmission oil temperature include a first torque threshold value, a second torque threshold value, a third torque threshold value, and a fourth torque threshold value; wherein the fourth torque threshold is less than the second torque threshold, the second torque threshold is less than the first torque threshold, and the first torque threshold is less than the third torque threshold;
comparing the power plant torque with a torque threshold corresponding to the transmission oil temperature, and determining the state of the clutch according to the comparison result comprises:
determining that the clutch is in a healthy state when the powerplant torque is greater than or equal to the second torque threshold and less than or equal to the first torque threshold;
determining that the clutch is in a sub-health state when the powerplant torque is greater than the first torque threshold and less than or equal to the third torque threshold, or the powerplant torque is less than the second torque threshold and greater than or equal to the fourth torque threshold;
determining that the clutch is in a fault state when the powerplant torque is less than the fourth torque threshold or greater than the third torque threshold.
4. The method of claim 3, wherein after determining that the clutch is in a sub-healthy state, further comprising:
sending reminding information to a driver;
after determining that the clutch is in the fault state, further comprising:
the transmission is controlled to enter a fault mode and a fault light is illuminated by the gauge.
5. The method of claim 1, wherein determining a state of a clutch from the powerplant torque when the powerplant speed, the powerplant coolant temperature, the clutch speed, the clutch command pressure, the transmission gear, the transmission oil temperature, the vehicle speed, the accelerator pedal opening, and the brake pedal opening all satisfy preset conditions comprises:
when the rotating speed of the power device is in a first set detection range, the temperature of the cooling liquid of the power device is in a second set detection range, the rotating speed of the clutch is 0r/min, the command pressure of the clutch is 0bar, the transmission is in a gear state, the oil temperature of the transmission is in a third set detection range, the vehicle speed is 0km/h, the opening degree of the accelerator pedal is 0% and the brake pedal switch is in an un-trampled state, and the state of the clutch is determined according to the torque of the power device.
6. The method of claim 1, wherein collecting a power plant speed, a power plant torque, a power plant coolant temperature, a clutch speed, a clutch command pressure, a transmission gear, a transmission oil temperature, a vehicle speed, an accelerator pedal opening, and a brake pedal opening comprises:
reading the rotating speed of a power device, the torque of the power device, the temperature of cooling liquid of the power device, the rotating speed of a clutch, the command pressure of the clutch, the gear position of a transmission, the oil temperature of the transmission, the vehicle speed, the opening degree of an accelerator pedal and the opening degree of a brake pedal through a diagnostic port by using a diagnostic instrument;
or reading the rotating speed of a power device, the torque of the power device, the temperature of cooling liquid of the power device, the rotating speed of a clutch, the command pressure of the clutch, the gear position of a transmission, the oil temperature of the transmission, the speed of a vehicle, the opening degree of an accelerator pedal and the opening degree of a brake pedal by a control unit of the whole vehicle;
or, the rotating speed of the power device and the rotating speed of the clutch are acquired through a rotating speed sensor, the temperature of cooling liquid of the power device and the oil temperature of a transmission are acquired through a temperature sensor, the torque of the power device is acquired through a torque sensor, the command pressure of the clutch is acquired through a pressure sensor, the gear of the transmission is acquired through a position sensor, the opening degree of an accelerator pedal is acquired through an opening degree sensor of the accelerator pedal, and the brake pedal is acquired through a brake pedal sensor.
7. A state detection device of a clutch, characterized by comprising:
the data acquisition module is used for acquiring the rotating speed of the power device, the torque of the power device, the temperature of cooling liquid of the power device, the rotating speed of a clutch, the command pressure of the clutch, the gear position of the transmission, the oil temperature of the transmission, the speed of a vehicle, the opening of an accelerator pedal and the opening of a brake pedal when the power device and the transmission of the vehicle are not in a fault state; wherein the power plant comprises an engine or an electric machine;
and the state determination module is used for determining the state of the clutch according to the torque of the power device when the rotating speed of the power device, the temperature of the cooling liquid of the power device, the rotating speed of the clutch, the command pressure of the clutch, the gear position of the transmission, the oil temperature of the transmission, the vehicle speed, the opening degree of an accelerator pedal and the opening degree of a brake pedal all meet preset conditions.
8. The state detection apparatus of a clutch according to claim 7, wherein the state determination module is specifically configured to:
and comparing the torque of the power device with a torque threshold value corresponding to the oil temperature of the transmission, and determining the state of the clutch according to the comparison result, wherein different oil temperatures of the transmission correspond to different torque threshold values.
9. The state detection device of the clutch according to claim 8, wherein the torque threshold value corresponding to the transmission oil temperature includes a first torque threshold value, a second torque threshold value, a third torque threshold value, and a fourth torque threshold value; wherein the fourth torque threshold is less than the second torque threshold, the second torque threshold is less than the first torque threshold, and the first torque threshold is less than the third torque threshold;
the state determination module comprises:
a state of health determination unit to determine that the clutch is in a state of health when the powerplant torque is greater than or equal to the second torque threshold and less than or equal to the first torque threshold;
a sub-health state determination unit to determine that the clutch is in a sub-health state when the powerplant torque is greater than the first torque threshold and less than or equal to the third torque threshold, or the powerplant torque is less than the second torque threshold and greater than or equal to the fourth torque threshold;
a failure state determination unit for determining that the clutch is in a failure state when the powerplant torque is less than the fourth torque threshold or greater than the third torque threshold.
10. The state detection device of a clutch according to claim 9, characterized by further comprising:
the information reminding module is used for sending reminding information to a driver after the clutch is determined to be in the sub-health state;
the state detection device further includes:
and the fault reminding module is used for controlling the transmission to enter a fault mode and lightening a fault lamp through an instrument after the clutch is determined to be in a fault state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211461842.8A CN115823243B (en) | 2022-11-17 | 2022-11-17 | Clutch state detection method and detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211461842.8A CN115823243B (en) | 2022-11-17 | 2022-11-17 | Clutch state detection method and detection device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115823243A true CN115823243A (en) | 2023-03-21 |
| CN115823243B CN115823243B (en) | 2024-06-14 |
Family
ID=85529958
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211461842.8A Active CN115823243B (en) | 2022-11-17 | 2022-11-17 | Clutch state detection method and detection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115823243B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104340229A (en) * | 2013-08-07 | 2015-02-11 | Zf腓德烈斯哈芬股份公司 | Method for determination of at least a drag torque effective on the input side of an automatic motor vehicle transmission |
| CN108343733A (en) * | 2018-02-13 | 2018-07-31 | 重庆长安汽车股份有限公司 | A kind of the clutch temp control method and system of wet type DCT |
| JP2018179068A (en) * | 2017-04-06 | 2018-11-15 | トヨタ自動車株式会社 | Control device for vehicle |
| CN113323761A (en) * | 2021-06-23 | 2021-08-31 | 蜂巢传动科技河北有限公司 | Vehicle engine starting and stopping method and device and vehicle |
| CN113525341A (en) * | 2020-04-20 | 2021-10-22 | 现代自动车株式会社 | Method for controlling uphill driving of vehicle |
| WO2022147870A1 (en) * | 2021-01-07 | 2022-07-14 | 浙江吉利控股集团有限公司 | Method and apparatus for starting engine in dual-motor hybrid power system, and vehicle |
-
2022
- 2022-11-17 CN CN202211461842.8A patent/CN115823243B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104340229A (en) * | 2013-08-07 | 2015-02-11 | Zf腓德烈斯哈芬股份公司 | Method for determination of at least a drag torque effective on the input side of an automatic motor vehicle transmission |
| JP2018179068A (en) * | 2017-04-06 | 2018-11-15 | トヨタ自動車株式会社 | Control device for vehicle |
| CN108343733A (en) * | 2018-02-13 | 2018-07-31 | 重庆长安汽车股份有限公司 | A kind of the clutch temp control method and system of wet type DCT |
| CN113525341A (en) * | 2020-04-20 | 2021-10-22 | 现代自动车株式会社 | Method for controlling uphill driving of vehicle |
| WO2022147870A1 (en) * | 2021-01-07 | 2022-07-14 | 浙江吉利控股集团有限公司 | Method and apparatus for starting engine in dual-motor hybrid power system, and vehicle |
| CN113323761A (en) * | 2021-06-23 | 2021-08-31 | 蜂巢传动科技河北有限公司 | Vehicle engine starting and stopping method and device and vehicle |
Non-Patent Citations (1)
| Title |
|---|
| 王顺利;刘义;杨林;张发勇;: "变速器拖曳扭矩的测试方法研究与应用", 机械工程与自动化, no. 02, 30 April 2016 (2016-04-30), pages 156 - 157 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN115823243B (en) | 2024-06-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111335981A (en) | Engine oil pressure alarm method and system | |
| JP2000234960A (en) | Temperature monitoring device for axle | |
| CN111645664B (en) | Electric vehicle fault analysis method, device and equipment and vehicle | |
| CN107680204B (en) | Vehicle data processing system for analyzing driving behaviors | |
| CN109606343A (en) | The monitoring of vehicle brake piece | |
| JP6986480B2 (en) | Abnormality diagnostic equipment and programs | |
| CN108204452B (en) | The confirmation and processing system of vehicle gear box failure | |
| CN109142780A (en) | A kind of rotating speed of automobile engine detection system | |
| CN106284470A (en) | A kind of bull-dozer entire car controller fault finding system | |
| CN113468241A (en) | Engine oil maintenance reminding method and device, electronic equipment and storage medium | |
| CN103994212A (en) | System and method for monitoring range gear transmission gear | |
| CN116879738A (en) | Motorcycle motor fault early warning method based on data analysis | |
| CN103422525A (en) | Fault intelligent diagnosing and monitoring system for underground scraper | |
| CN115823243A (en) | Clutch state detection method and detection device | |
| CN115027271A (en) | Fault prompting method for hybrid vehicle and vehicle | |
| CN114633709A (en) | Vehicle fault processing system and method | |
| US6138065A (en) | System and method for monitoring a performance characteristic using temperature and lubrication level of vehicle components | |
| CN115143215A (en) | Method and device for acquiring wear loss of clutch friction plate and vehicle | |
| CN104121095A (en) | Fault diagnosis method for rotating speed sensor | |
| CN109507446A (en) | A kind of rotating speed of automobile engine detection method | |
| CN110118659A (en) | The detection method and car-mounted terminal of descending neutral position sliding | |
| CN205292628U (en) | Monitoring devices is slideed to heavy vehicle's neutral | |
| CN209258051U (en) | Vehicle self-checking system and fire fighting truck | |
| CN213948042U (en) | Tire pressure sensor monitoring system | |
| CN105196932A (en) | State distinguishing method for vehicle clutch, real-time display system and vehicle |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |