CN111255562A - Power system and control method of foam fire fighting truck and foam fire fighting truck - Google Patents
Power system and control method of foam fire fighting truck and foam fire fighting truck Download PDFInfo
- Publication number
- CN111255562A CN111255562A CN201811450687.3A CN201811450687A CN111255562A CN 111255562 A CN111255562 A CN 111255562A CN 201811450687 A CN201811450687 A CN 201811450687A CN 111255562 A CN111255562 A CN 111255562A
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- China
- Prior art keywords
- power
- engine
- transmission
- foam fire
- water pump
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B61/00—Adaptations of engines for driving vehicles or for driving propellers; Combinations of engines with gearing
- F02B61/04—Adaptations of engines for driving vehicles or for driving propellers; Combinations of engines with gearing for driving propellers
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C27/00—Fire-fighting land vehicles
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B61/00—Adaptations of engines for driving vehicles or for driving propellers; Combinations of engines with gearing
- F02B61/06—Combinations of engines with mechanical gearing
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D29/00—Controlling engines, such controlling being peculiar to the devices driven thereby, the devices being other than parts or accessories essential to engine operation, e.g. controlling of engines by signals external thereto
- F02D29/02—Controlling engines, such controlling being peculiar to the devices driven thereby, the devices being other than parts or accessories essential to engine operation, e.g. controlling of engines by signals external thereto peculiar to engines driving vehicles; peculiar to engines driving variable pitch propellers
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Public Health (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)
Abstract
The invention provides a power system of a foam fire fighting truck, a control method and the foam fire fighting truck, wherein the power system comprises an engine, a transmission, a power takeoff, a water pump and a transfer case, wherein the engine is a single engine and is provided with a double-idling system, and the high-idling system is used for providing a higher stable rotating speed of the engine when the water pump is used; the transmission has two modes, and the low gear mode locks the gear of the transmission at a lower gear for a lower driving speed under a detour fire extinguishing condition. The invention adopts a single engine to provide power for the traveling and the fire extinguishing water pump, reduces the quality of the whole vehicle, realizes high power performance, solves the problem of higher and stable engine rotating speed required by the water pump at lower traveling speed by developing the double-mode matching of the engine double-idle system and the speed changer, and provides reliable guarantee for the quick switching of the roundabout fire extinguishing working condition.
Description
Technical Field
The invention relates to the field of automobile power, in particular to a power system and a control method of a foam fire fighting truck and the foam fire fighting truck with the power system.
Background
At present, the domestic airport main foam fire engine needs very high driving power and water cannon power, and a water pump is usually driven by an independent engine, namely, the driving power and the water cannon power are respectively provided with power by two engines. Therefore, the equipment weight of the whole fire truck is inevitably increased, and the flexibility of the fire truck is influenced. Through analysis, the power reserve of the engine of the fire fighting truck is large when the fire fighting truck detours and follows to extinguish the fire, the requirement of a water cannon is completely met, a single engine can be adopted, but the contradiction between the lower driving speed required by the fire fighting truck under the condition of detouring and extinguishing and the higher and stable engine rotating speed required by a water pump exists when the single engine is adopted to provide power.
Disclosure of Invention
In view of the above problems, the present invention provides a power system of a foam fire fighting truck, comprising an engine, a transmission, a power takeoff, a water pump and a transfer case, wherein the engine is connected with the transmission, the transmission is connected with the power takeoff and the transfer case, the power takeoff is connected with the water pump, the transfer case is connected with each drive axle, after the engine outputs power to the transmission, the power output by the transmission is distributed to each drive axle through the transfer case for driving, when the water pump needs to be used, part of the power is output to the water pump through the power takeoff, the engine is a single engine and has a double-idle speed system, namely a normal idle speed and a high idle speed, and the high idle speed is used for providing a higher stable rotation speed of the engine when the water pump is used; the transmission has two modes, a normal mode and a low range mode, which locks the transmission gear in the lower gear for lower vehicle speeds during detour fire conditions.
In one embodiment, the normal idle speed is 600-2200 r/min, and the high idle speed is 1300-2200 r/min.
In one embodiment, the normal mode is 1-6 gears, and the low gear mode is 1-2 gears.
In one embodiment, the transmission is an automatic transmission.
In one embodiment, the dual idle system of the engine and the two mode shifting of the transmission are both manual.
In one embodiment, the power take-off is a dynamic power take-off, employing a hydraulic power take-off for engaging or disengaging the transmission during high speed travel.
In one embodiment, each drive axle comprises a front drive axle, an intermediate drive axle and a rear drive axle, which are transmitted to the front and intermediate drive axles of the fire engine by the transfer case, which in turn transmit power to the wheels and to the rear drive axle.
A control method of a foam fire engine is provided, the foam fire engine is provided with a power system of the foam fire engine, when the fire engine normally runs, a power takeoff is not engaged, and power is completely transmitted to a transfer case by a speed changer for driving the fire engine to run; when the roundabout fire extinguishing is needed, the transmission is changed into a low gear mode, the power takeoff is connected, the engine is switched into a high idle speed mode without interrupting power, a water pump and a water cannon are turned on when needed, and the speed of the vehicle is controlled by an accelerator.
A foam fire engine is provided with the power system of the foam fire engine.
The invention adopts a single engine to provide power for the traveling and fire extinguishing water pump, reduces the quality of the whole vehicle, realizes high power performance, solves the problem of higher and stable engine rotating speed required by the water pump at lower traveling speed by developing a dual-idle system of the engine and a high-low gear dual-mode collocation of the automatic transmission, realizes uninterrupted connection or separation at high traveling speed by developing a dynamic clutch with clutch, and provides reliable guarantee for the quick switching of circuitous fire extinguishing working conditions.
Drawings
FIG. 1 is a schematic diagram of a power system of a foam fire engine;
wherein: 1-an engine; 2-front drive axle; 3, power takeoff; 4-a transmission; 5-a transfer case; 6, a water pump; 7-intermediate drive axle; 8-rear drive axle.
Detailed Description
A power system of a foam fire engine comprises an engine 1, a transmission 4, a power take-off device 3, a water pump 6 and a transfer case 5, wherein the engine 1 is connected with the transmission 4, the transmission 4 is connected with the power take-off device 3 and the transfer case 5, the power take-off device 3 is connected with the water pump 6, the transfer case 5 is connected with each driving axle, after the engine 1 outputs power to the transmission 4, the power output by the transmission 4 is distributed to each driving axle through the transfer case 5 for driving, when the water pump 6 needs to be used, partial power is output to the water pump 6 through the power take-off device 3, the engine 1 is a single engine and is provided with a double-idling system, namely a normal idling system and a high idling system, and the high idling system is used for providing higher stable rotation speed of the engine 1 when the water pump 6 is used; the transmission 4 has two modes, a normal mode and a low range mode, which locks the transmission gear in the lower gear for lower driving speeds during detour fire conditions.
When the airport fire fighting truck is accelerated to run, the scheme that the single WP12.570 engine 1 provides power reduces the need of additionally arranging one set of engine 1 and auxiliary systems thereof, reduces the total mass of the whole truck, provides power for running at the accelerated speed by using the total power, realizes the acceleration time of 0-80 km/h not more than 30 seconds and the highest speed not less than 110km/h, and meets the requirement that the truck arrives at any accident site of an airport for 3 minutes.
In the roundabout fire extinguishing working condition, in order to solve the contradiction that the low rotating speed of the engine 1 is needed by the low speed of the vehicle and the stable rotating speed of the engine 1 is needed by the water pump 6, a double idle speed system of the engine 1 and a high-low gear double mode of the automatic transmission 4 are developed, wherein the high-gear mode is a normal mode. At the moment, the transmission 4 adopts a low gear mode, the engine 1 adopts a high idle speed, and other working conditions adopt a default mode, namely a normal mode.
In one embodiment, the normal idle speed is 600-2200 r/min, and the high idle speed is 1300-2200 r/min.
In one embodiment, the normal mode is 1-6 gears, and the low gear mode is 1-2 gears.
In one embodiment, the transmission 4 is an automatic transmission, employing an irison of 4500P. The single engine 1 provides power for a travelling crane and a fire extinguishing water pump 6 system, the power output of the engine 1 is output to the water pump 6 of a fire extinguishing driving system by a dynamic power takeoff 3 arranged on an automatic transmission 4, one part of the power is transmitted to a full-time transfer case 5 model ZQC2000 through a rear end output flange of the engine 1, the power is transmitted to a front driving axle 2 and a middle driving axle 7 respectively in proportion, one part of the power transmitted to the middle driving axle 7 is transmitted to wheels at two ends through a half shaft of the engine, and the other part of the power is transmitted to a rear driving axle 8.
When the vehicle normally runs, the dynamic power takeoff 3 is not engaged, no power is output, and the power is completely transmitted to the full-time transfer case 5, the front drive axle 2, the middle drive axle 7 and the rear drive axle 8 by the automatic transmission 4 and is completely used for running and driving of the vehicle.
An electronic control system of the engine 1 develops a double-idle speed system, wherein one is a normal idle speed of 600 +/-50 revolutions per minute, and the other is a high idle speed of 1300 +/-50 revolutions per minute; the automatic transmission 4 develops a high-low gear double mode, wherein the first mode is a normal gear shifting mode, the number of forward gears is 6, the second mode is a low gear mode, the forward gears only have a first gear and a second gear, and the upshifting is not performed when the forward gears are in the first gear and the second gear.
When the vehicle travels to the front of the airplane and needs to detour to extinguish a fire, the transmission 4 is changed to the second mode, the engagement switch of the dynamic power takeoff 3 is pressed, and the engine 1 is switched to the high idle speed mode without interrupting power. When fire extinguishing operation is needed, the switch of the water pump 6 is turned on, the switch of the water cannon is turned on, and the speed of the vehicle is controlled by the accelerator.
In one embodiment, the dual idle system of the engine 1 and the two-mode shift of the transmission 4 are both manually operated.
In one embodiment, the power take-off 3 is a dynamic power take-off, using a hydraulic power take-off, model No. chelson 859. For engaging or disengaging the transmission 4 at high speeds, the power take-off 3 satisfies a continuous power output of 6 h. The power takeoff is generally in a gear mode, and can be hung only when the driving speed is below 5 km/h. The hydraulic power takeoff 3 can be engaged at a speed of less than 65km/h, and the power takeoff 3 is opened by a hydraulic valve.
In one embodiment, each drive axle comprises a front drive axle 2, an intermediate drive axle 7 and a rear drive axle 8, which are transmitted to the front drive axle 2 and the intermediate drive axle 7 of the fire engine by the transfer case 5, the intermediate drive axle 7 in turn transmitting power to the wheels and the rear drive axle 8.
A control method of a foam fire engine is provided, the foam fire engine is provided with a power system of the foam fire engine, when the fire engine normally runs, a power takeoff 3 is not engaged, and power is completely transmitted to a transfer case 5 by a speed changer 4 for driving the fire engine to run; when the roundabout fire is needed, the transmission 4 is changed into a low gear mode, the power takeoff is connected, the engine 1 is switched into a high idle speed mode without interrupting power, the water pump 6 and the water cannon are turned on when needed, and the speed of the vehicle is controlled by the accelerator.
A foam fire engine is provided with the power system of the foam fire engine.
The invention adopts a single engine to provide power for the traveling and fire extinguishing water pump, reduces the quality of the whole vehicle, realizes high power performance, solves the problem of higher and stable engine rotating speed required by the water pump at lower traveling speed by developing a dual-idle system of the engine and a high-low gear dual-mode collocation of the automatic transmission, realizes uninterrupted connection or separation at high traveling speed by developing a dynamic clutch with clutch, and provides reliable guarantee for the quick switching of circuitous fire extinguishing working conditions.
Claims (9)
1. A power system of a foam fire engine, which comprises an engine, a transmission, a power takeoff, a water pump and a transfer case, wherein the engine is connected with the transmission, the transmission is connected with the power takeoff and the transfer case, the power takeoff is connected with the water pump, the transfer case is connected with each driving axle, after the engine outputs power to the transmission, the power output by the transmission is distributed to each driving axle through the transfer case for driving, and when the water pump is needed to be used, part of power is output to the water pump through the power takeoff, the power system is characterized in that the engine is a single engine and is provided with a double-idling system which is respectively a normal idling system and a high idling system, and the high idling system is used for providing higher stable rotation speed of the engine when the water pump is used; the transmission has two modes, a normal mode and a low range mode, which locks the transmission gear in the lower gear for lower vehicle speeds during detour fire conditions.
2. The power system of the foam fire engine as recited in claim 1, wherein the normal idle speed is 600-2200 r/min, and the high idle speed is 1300-2200 r/min.
3. The power system of a foam fire engine as recited in claim 1, wherein the normal mode is 1-6 gears and the low gear mode is 1-2 gears.
4. The power system of a foam fire engine of claim 1, wherein the transmission is an automatic transmission.
5. The power system of the foam fire engine as recited in claim 1, wherein the dual idle systems of the engine and the dual mode shifting of the transmission are manually operated.
6. The power system of a foam fire engine as recited in claim 1, wherein said power take-off is a dynamic power take-off, employing a hydraulic power take-off for engaging or disengaging the transmission during high speed travel.
7. The power system of the foam fire fighting vehicle of claim 1, wherein each drive axle comprises a front drive axle, an intermediate drive axle and a rear drive axle, and wherein the power is transmitted to the front drive axle and the intermediate drive axle of the fire fighting vehicle through the transfer case, and wherein the intermediate drive axle in turn transmits power to the wheels and the rear drive axle.
8. A control method of a foam fire fighting truck, characterized in that the foam fire fighting truck has a power system of the foam fire fighting truck according to any one of claims 1 to 7, when the fire fighting truck is normally running, the power take-off is not engaged, and power is completely transmitted from the transmission to the transfer case for running drive of the vehicle; when the roundabout fire extinguishing is needed, the transmission is changed into a low gear mode, the power takeoff is connected, the engine is switched into a high idle speed mode without interrupting power, a water pump and a water cannon are turned on when needed, and the speed of the vehicle is controlled by an accelerator.
9. A foam fire fighting vehicle characterized in that it has a power system of a foam fire fighting vehicle according to any of claims 1 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811450687.3A CN111255562A (en) | 2018-11-30 | 2018-11-30 | Power system and control method of foam fire fighting truck and foam fire fighting truck |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811450687.3A CN111255562A (en) | 2018-11-30 | 2018-11-30 | Power system and control method of foam fire fighting truck and foam fire fighting truck |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111255562A true CN111255562A (en) | 2020-06-09 |
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ID=70942796
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811450687.3A Pending CN111255562A (en) | 2018-11-30 | 2018-11-30 | Power system and control method of foam fire fighting truck and foam fire fighting truck |
Country Status (1)
| Country | Link |
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| CN (1) | CN111255562A (en) |
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| CN106696693A (en) * | 2016-12-21 | 2017-05-24 | 湖南大学 | Power driving system of series-parallel type plug-in hybrid power cleaning-sweeping truck and control method thereof |
| CN107165725A (en) * | 2017-06-20 | 2017-09-15 | 吴联凯 | A kind of control method of dynamic power for emergency management and rescue vehicle |
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-
2018
- 2018-11-30 CN CN201811450687.3A patent/CN111255562A/en active Pending
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| CN2156892Y (en) * | 1993-03-22 | 1994-02-23 | 本溪市消防车改装厂 | Smoke discharging fire engine |
| CN1375410A (en) * | 2001-03-21 | 2002-10-23 | 易通公司 | Control of transmission system uisng centrifugal clutch |
| CN1746466A (en) * | 2004-09-08 | 2006-03-15 | 雅马哈发动机株式会社 | Engine |
| CN101025118A (en) * | 2007-02-12 | 2007-08-29 | 三一重机有限公司 | Automatic idling control method for digger engine |
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| CN101598214A (en) * | 2008-06-03 | 2009-12-09 | 日产自动车株式会社 | The idling of driver for vehicle stops the equipment of removing controls |
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Application publication date: 20200609 |