CN104875733A - Hydraulic retarder control system and control method - Google Patents
Hydraulic retarder control system and control method Download PDFInfo
- Publication number
- CN104875733A CN104875733A CN201410072171.5A CN201410072171A CN104875733A CN 104875733 A CN104875733 A CN 104875733A CN 201410072171 A CN201410072171 A CN 201410072171A CN 104875733 A CN104875733 A CN 104875733A
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- hydrodynamic retarder
- control
- solenoid directional
- control valve
- directional control
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T10/00—Control or regulation for continuous braking making use of fluid or powdered medium, e.g. for use when descending a long slope
- B60T10/02—Control or regulation for continuous braking making use of fluid or powdered medium, e.g. for use when descending a long slope with hydrodynamic brake
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Transmission Of Braking Force In Braking Systems (AREA)
Abstract
The invention discloses a hydraulic retarder control system and a control method. The control system comprises a magnetic exchange valve controlling a hydraulic retarder. The control system further comprises a hydraulic retarder stepping switch, a control box, a compressed air pipeline, a vehicle auxiliary loading air chamber and a heat exchanger. The control box is connected to the stepping switch of the hydraulic retarder, and the stepping switch provides working signals for the control box. The magnetic exchange valve is connected to the control box, and the control box sends control commands to the magnetic exchange valve. The magnetic exchange valve is connected to the compressed air pipeline. By employing the hydraulic retarder control system, oil can be rapidly charged and discharged for the hydraulic retarder, and the oil charging rate of the hydraulic retarder can be continuously adjusted according to retarding requirements, thereby bringing high reliability and convenient control.
Description
Technical field
The present invention relates to auto parts and components and automobile manufacturing field, be specifically related to secondary brake for vehicles--automobile-used hydrodynamic retarder field.
Technical background
The safety of automobile is all the time all very important, particularly in today that motor transport service is flourish, requires that vehicle has higher efficiency of operation, and therefore vehicle-mounted quality increases, and the speed of a motor vehicle improves, and the kinetic energy exponentially curve that vehicle travels increases.The braking potential of running brake can not synchronously improve owing to being subject to the restriction of many factors, and when the long-time continuous braking of lower long slope and high speed are braked, drg suffers huge kinetic energy to become the strong load of heat energy, and the temperature of brake lining and brake wheel can up to 1000 DEG C.Under such high temperatures, not only braking potential declines, and brake wheel very easily chaps, brake lining severe wear or scaling loss.Cause brake life to reduce, earlier period damage, increase maintenance cost, even threaten traffic safety.Advanced plate disc brake quality is light, and performance is good, and service expenditure is low, but because frictional area is little, the thermal load that when being braked, huge kinetic energy produces makes the temperature on its surface more taller than drum brake mechanism, and serious wear, can not meet the requirement of slope road continuous braking and high speed heavy braking equally.
Hydrodynamic retarder as the automobile-used brake auxiliary device of a kind of actv., its compact conformation, quality is light, retarder torque wide ranges; Hydrodynamic retarder and engine retardation associated working, can obtain best slow combination; Because hydrodynamic retarder self has the fuel-feed system of oneself, can within the shortest time, a large amount of vehicle energies be made to change heat energy into, dissipated by the cooling system of driving engine, not only there is no problems of excessive heat, but also the Warm status of driving engine can be kept in vehicle lower long slope process, not only fuel saving but also protect driving engine; Hydrodynamic retarder utilizes the cooling system of driving engine to dispel the heat, the heat of slow generation can be dissipated by the H Exch of self and engine-cooling system, heat affecting can not be produced to the parts of surrounding, can not increase the thermal load of driving engine, retarder torque can not raise with temperature and decline, and can keep stable slow ability, hydrodynamic retarder is in the moment of gearshift, still keep retarded acting, retarded acting is continuous print, this again improves the safety of traveling.Facts have proved, hydrodynamic retarder has gratifying auxiliary braking effect, becomes the first-selection of high-grade commercial vehicle.
Summary of the invention
The object of the invention is to design the hydrodynamic retarder control system that a kind of structure is simple, reliability is high, be easy to realization and handle, hydrodynamic retarder can be made to fill oil extraction fast, regulate the oil-filled amount of hydrodynamic retarder according to slow requirement continuously, thus make hydrodynamic retarder provide the retarder torque of needs.
Technical scheme of the present invention is: control system is provided with the solenoid directional control valve controlled hydrodynamic retarder; Control system also comprises hydrodynamic retarder step switch, control capsule, compressed air piping, vehicle auxiliary loads energy chamber, H Exch; Control capsule connects the step switch of hydrodynamic retarder, and step switch provides working signal to control capsule; Solenoid directional control valve is connected with control capsule, sends control command by control capsule to solenoid directional control valve; Solenoid directional control valve is connected with compressed air piping.
The control agent of hydrodynamic retarder is pressurized air, pressurized air is from the assistant load energy chamber of vehicle, the characteristic that this programme utilizes solenoid directional control valve to switch fast is carried out hydrodynamic retarder control presssure and is controlled, thus control the fluid amount of epitrochoidal chamber, reach the object controlling hydrodynamic retarder work.
Control system is also provided with the pressure sensor of the air pressure measured in fuel tank, the cooling-water temperature sensor being installed on the water outlet of H Exch, be installed in hydrodynamic retarder body drainback passage in oil temperature sensor; Pressure sensor, cooling-water temperature sensor, oil temperature sensor are all connected with control capsule, will detect data feedback to control capsule.
Hydrodynamic retarder is provided with heat exchanger system.
The control method of electric-control system technical scheme provided by the invention is as follows:
Hydrodynamic retarder adopts solenoid directional control valve to control, and hydrodynamic retarder step switch cuts out, and signal transmission is to control capsule, and control capsule controls solenoid directional control valve and disconnects control gas circuit, and solenoid directional control valve is in meta, and hydrodynamic retarder does not work.
Hydrodynamic retarder step switch is opened, step switch is to control capsule transmission of signal, control capsule controls solenoid directional control valve and connects control gas circuit, solenoid directional control valve conducting, solenoid directional control valve passes through pressurized air medium to the constant adjustment of fuel tank control presssure, fuel tank provides a certain amount of fluid to hydrodynamic retarder epitrochoidal chamber, and hydrodynamic retarder provides the retarder torque of needs; Control capsule is in the initial certain hour that step switch cuts out, and the pressure air in fuel tank is discharged from gas exhaust duct by return-air duct by solenoid directional control valve, and fuel tank got back to by the oil in hydrodynamic retarder epitrochoidal chamber, and hydrodynamic retarder quits work.
Pressure sensor is located in fuel tank, measure the air pressure in fuel tank, when epitrochoidal chamber pressure is higher than the force value preset, solenoid directional control valve disconnects, and stops to fuel tank for pressurized air, simultaneously, fuel tank stops to epitrochoidal chamber fuel feeding, by the feedback of pressure sensor, control capsule regulates continuously, till reaching the force value preset.
Cooling-water temperature sensor is placed in the water outlet of hydrodynamic retarder H Exch, transmits the temperature information of cooling water expansion tank to control capsule; Oil temperature sensor is installed in the drainback passage in hydrodynamic retarder body, transmits the temperature information of working oil to control capsule.For preventing from exceeding the highest given in control capsule water temperature and oil temperature, be protection vehicle cooling device and hydrodynamic retarder, the lock torque of hydrodynamic retarder meeting scaled-back hydrodynamic retarder, if exceed temperature limited region, then can not produce lock torque.
The brake assisting effect of hydrodynamic retarder is apparent, and the control system of hydrodynamic retarder provided by the invention can make hydrodynamic retarder fill oil extraction fast, regulate the oil-filled rate of hydrodynamic retarder according to slow requirement continuously, has that reliability is high, easy operation; Compact conformation, be easy to realize.
Accompanying drawing explanation
Fig. 1 is hydrodynamic retarder electric-control system schematic diagram of the present invention.
1, H Exch 2, the 3rd compressed air piping
3, assistant load energy chamber 4, first compressed air piping
5, the second compressed air piping 6, gas exhaust duct
7, return-air duct 8, hydrodynamic retarder step switch
20, control capsule 21, solenoid directional control valve
22, pressure sensor 23, cooling-water temperature sensor
24, oil temperature sensor 25, solenoid directional control valve electric current connect
Detailed description of the invention
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described further.
The control system of hydrodynamic retarder comprises solenoid directional control valve 21, hydrodynamic retarder step switch 8, control capsule 20, compressed air piping, vehicle auxiliary loads energy chamber 3, H Exch 1; Control capsule 20 connects the step switch 8 of hydrodynamic retarder, and step switch 8 provides working signal to control capsule 20; Solenoid directional control valve 21 connects 25 by solenoid directional control valve electric current and is connected with control capsule 20, sends control command by control capsule 20 to solenoid directional control valve 21; Solenoid directional control valve 21 is connected with compressed air piping.
Compressed air piping comprises the first compressed air piping 4 be connected with vehicle auxiliary loads energy chamber 3 and solenoid directional control valve 21; The second compressed air piping 5 be connected with hydrodynamic retarder fuel tank with solenoid directional control valve 21, hydrodynamic retarder return-air duct 7 and the gas exhaust duct 6 be communicated with solenoid directional control valve; Also comprise the 3rd compressed air piping 2 that compressed air source is provided to vehicle auxiliary loads energy chamber 3.
Control system is also provided with the pressure sensor 22 of the air pressure measured in fuel tank, the cooling-water temperature sensor 23 being installed on the water outlet of H Exch, be installed in hydrodynamic retarder body drainback passage in oil temperature sensor 24; Described pressure sensor 22, cooling-water temperature sensor 23, oil temperature sensor 24 are all connected with control capsule 20, detect data to control capsule feedback.
Hydrodynamic retarder is provided with H Exch 1, and water heater 1 has water outlet of water heater mouth 26, connects vehicle cooling vessel water inlet; Water heater 1 has water heater water inlet 27, connects vehicle cooling vessel water outlet.
Hydrodynamic retarder is to the control of adjustment realization to hydrodynamic retarder controlling bleed pressure by control system.By starting hydrodynamic retarder step switch 8, control capsule 20 obtains a working signal.After control capsule analysis judges this working signal, instruction is sent to solenoid directional control valve 21, solenoid directional control valve 21 one end is connected, control source of the gas and provide pressurized air by compressed air piping 4, compressed air piping 5 to hydrodynamic retarder fuel tank, pressurized air enters fuel tank, the pressure of fuel tank raises, and the fluid baric flow in fuel tank is to the epitrochoidal chamber of hydrodynamic retarder, and hydrodynamic retarder is started working.
Simultaneously, by the compressed-air actuated pressure signal in pressure sensor 22 collecting work chamber, feed back to control capsule 20, compare with the pressure signal preset through control capsule 20, time lower than the pressure preset, solenoid directional control valve continues open-minded, and to hydrodynamic retarder fuel tank for pressurized air, fuel tank is to epitrochoidal chamber fuel feeding; When epitrochoidal chamber pressure is higher than the force value preset, solenoid directional control valve 21 disconnects, and stops to fuel tank for pressurized air, and meanwhile, fuel tank stops to epitrochoidal chamber fuel feeding.Above-mentioned dynamic adjustments is carried out continuously, until till reaching the force value preset, the epitrochoidal chamber of hydrodynamic retarder obtains a certain amount of work fluid, and hydrodynamic retarder normally works.
Cooling-water temperature sensor 23 is placed in the water outlet 26 of hydrodynamic retarder H Exch, transmits the temperature information of cooling water expansion tank to control capsule 20; Oil temperature sensor 24 is installed in the drainback passage in hydrodynamic retarder body, transmits the temperature information of working oil to control capsule 20.For preventing from exceeding the highest given in control capsule water temperature and oil temperature; for protection vehicle cooling device and hydrodynamic retarder; when the temperature that cooling-water temperature sensor 23 or oil temperature sensor 24 feed back is higher than the highest water temperature preset or oil temperature; control capsule 20 is by controlling solenoid directional control valve 21; reduce the fluid in the epitrochoidal chamber of hydrodynamic retarder, make the lock torque of hydrodynamic retarder scaled-back hydrodynamic retarder.If exceed temperature limited region, control capsule 20, by controlling solenoid directional control valve 21, makes hydrodynamic retarder quit work.
Close hydrodynamic retarder step switch 8, control capsule 20 obtains another kind of working signal, and control capsule is in the initial certain hour that step switch 8 cuts out, one end of solenoid directional control valve 21 is closed, the other end is connected, and is discharged by the pressure air in fuel tank by return-air duct 7, disconnects hydrodynamic retarder; The control electric current of control capsule 20 closes the other end subsequently, and solenoid directional control valve is in meta, and hydrodynamic retarder quits work.
Claims (8)
1. the control system of hydrodynamic retarder, is characterized in that: described control system is provided with the solenoid directional control valve controlled hydrodynamic retarder.
2. the control system of hydrodynamic retarder according to claim 1, is characterized in that: described control system also comprises hydrodynamic retarder step switch, control capsule, compressed air piping, vehicle auxiliary loads energy chamber, H Exch; Control capsule connects the step switch of hydrodynamic retarder, and step switch provides working signal to control capsule; Solenoid directional control valve is connected with control capsule, sends control command by control capsule to solenoid directional control valve; Solenoid directional control valve is connected with compressed air piping.
3. the control system of hydrodynamic retarder according to claim 2, is characterized in that: described compressed air piping comprises the first compressed air piping be connected with vehicle auxiliary loads energy chamber and solenoid directional control valve; The second compressed air piping be connected with hydrodynamic retarder fuel tank with solenoid directional control valve, hydrodynamic retarder return-air duct and the gas exhaust duct be communicated with solenoid directional control valve.
4. the control system of hydrodynamic retarder according to claim 2, is characterized in that: described control system is also provided with the pressure sensor of the air pressure measured in fuel tank, the cooling-water temperature sensor being installed on the water outlet of H Exch, be installed in hydrodynamic retarder body drainback passage in oil temperature sensor; Described pressure sensor, cooling-water temperature sensor, oil temperature sensor are all connected with control capsule.
5. the control system of the hydrodynamic retarder according to any one of claim 1-4, is characterized in that: described hydrodynamic retarder is provided with heat exchanger system.
6. the control method of hydrodynamic retarder, is characterized in that: described hydrodynamic retarder adopts solenoid directional control valve to control; Hydrodynamic retarder step switch cuts out, and disconnect and control gas circuit, solenoid directional control valve is in meta, and hydrodynamic retarder does not work; Hydrodynamic retarder step switch is opened, and connect and control gas circuit, solenoid directional control valve conducting, solenoid directional control valve is regulated fuel tank control presssure by pressurized air, and fuel tank provides fluid to hydrodynamic retarder epitrochoidal chamber, hydrodynamic retarder work.
7. the control method of hydrodynamic retarder according to claim 6, it is characterized in that: by the compressed-air actuated pressure signal in pressure sensor collecting work chamber during hydrodynamic retarder work, compare with the pressure signal preset through control capsule, time lower than the pressure preset, solenoid directional control valve continues open-minded, to hydrodynamic retarder fuel tank for pressurized air, fuel tank is to epitrochoidal chamber fuel feeding; When epitrochoidal chamber pressure is higher than the force value preset, solenoid directional control valve disconnects, and stops to fuel tank for pressurized air, and meanwhile, fuel tank stops to epitrochoidal chamber fuel feeding, is regulated continuously, reach the force value preset by control capsule ground.
8. the control method of hydrodynamic retarder according to claim 6, is characterized in that: described cooling-water temperature sensor is placed in the water outlet of hydrodynamic retarder H Exch, transmits the temperature information of cooling water expansion tank to control capsule; Oil temperature sensor is installed in the drainback passage in hydrodynamic retarder body, transmits the temperature information of working oil to control capsule; The highest given water temperature and oil temperature in the temperature control box of sensor place feedback, control capsule is by controlling solenoid directional control valve, and hydrodynamic retarder reduces the lock torque of hydrodynamic retarder; When the temperature of sensor place feedback exceedes temperature limited region, control capsule is by controlling solenoid directional control valve, and hydrodynamic retarder quits work.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410072171.5A CN104875733A (en) | 2014-02-28 | 2014-02-28 | Hydraulic retarder control system and control method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410072171.5A CN104875733A (en) | 2014-02-28 | 2014-02-28 | Hydraulic retarder control system and control method |
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| CN104875733A true CN104875733A (en) | 2015-09-02 |
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| CN201410072171.5A Pending CN104875733A (en) | 2014-02-28 | 2014-02-28 | Hydraulic retarder control system and control method |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105398432A (en) * | 2015-11-30 | 2016-03-16 | 宁波华盛汽车部件有限公司 | Control system and method for hydrodynamic retarder |
| CN105752057A (en) * | 2015-12-31 | 2016-07-13 | 芜湖联合新能源重卡产业技术研究院有限公司 | Control method for auxiliary braking of heavy truck |
| CN106740775A (en) * | 2016-11-04 | 2017-05-31 | 宁波华盛联合制动科技有限公司 | The intelligence control system and its method of a kind of Retarder |
| CN112780705A (en) * | 2019-11-07 | 2021-05-11 | 威伯科欧洲有限责任公司 | Pneumatic control device for hydrodynamic retarder |
| CN113246938A (en) * | 2021-07-05 | 2021-08-13 | 陕西法士特齿轮有限责任公司 | Retarder braking torque pressure control system and method |
| CN113246937A (en) * | 2021-06-21 | 2021-08-13 | 吉林大学 | Intelligent hydraulic auxiliary braking system for heavy commercial vehicle and control method |
| CN114321221A (en) * | 2021-12-31 | 2022-04-12 | 富奥汽车零部件股份有限公司 | Unloading method and unloading device of high-viscosity oil retarder |
| CN114321222A (en) * | 2021-12-31 | 2022-04-12 | 富奥汽车零部件股份有限公司 | Retarder oil supply method and retarder oil supply system |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105398432A (en) * | 2015-11-30 | 2016-03-16 | 宁波华盛汽车部件有限公司 | Control system and method for hydrodynamic retarder |
| CN105752057A (en) * | 2015-12-31 | 2016-07-13 | 芜湖联合新能源重卡产业技术研究院有限公司 | Control method for auxiliary braking of heavy truck |
| CN106740775A (en) * | 2016-11-04 | 2017-05-31 | 宁波华盛联合制动科技有限公司 | The intelligence control system and its method of a kind of Retarder |
| CN112780705A (en) * | 2019-11-07 | 2021-05-11 | 威伯科欧洲有限责任公司 | Pneumatic control device for hydrodynamic retarder |
| CN113246937A (en) * | 2021-06-21 | 2021-08-13 | 吉林大学 | Intelligent hydraulic auxiliary braking system for heavy commercial vehicle and control method |
| CN113246937B (en) * | 2021-06-21 | 2021-12-21 | 吉林大学 | Intelligent hydraulic auxiliary braking system for heavy commercial vehicle and control method |
| CN113246938A (en) * | 2021-07-05 | 2021-08-13 | 陕西法士特齿轮有限责任公司 | Retarder braking torque pressure control system and method |
| CN113246938B (en) * | 2021-07-05 | 2021-11-09 | 陕西法士特齿轮有限责任公司 | Retarder braking torque pressure control system and method |
| CN114321221A (en) * | 2021-12-31 | 2022-04-12 | 富奥汽车零部件股份有限公司 | Unloading method and unloading device of high-viscosity oil retarder |
| CN114321222A (en) * | 2021-12-31 | 2022-04-12 | 富奥汽车零部件股份有限公司 | Retarder oil supply method and retarder oil supply system |
| CN114321221B (en) * | 2021-12-31 | 2023-06-30 | 富奥汽车零部件股份有限公司 | Unloading method and unloading device for high-viscosity oil retarder |
| CN114321222B (en) * | 2021-12-31 | 2023-07-04 | 富奥汽车零部件股份有限公司 | Retarder oil supply method and retarder oil supply system |
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Application publication date: 20150902 |