CN112158182A - Intelligent controller of hydraulic retarder and control method thereof - Google Patents
Intelligent controller of hydraulic retarder and control method thereof Download PDFInfo
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- CN112158182A CN112158182A CN202011209436.3A CN202011209436A CN112158182A CN 112158182 A CN112158182 A CN 112158182A CN 202011209436 A CN202011209436 A CN 202011209436A CN 112158182 A CN112158182 A CN 112158182A
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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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
- B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
- B60R16/023—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for transmission of signals between vehicle parts or subsystems
- B60R16/0231—Circuits relating to the driving or the functioning of the vehicle
- B60R16/0232—Circuits relating to the driving or the functioning of the vehicle for measuring vehicle parameters and indicating critical, abnormal or dangerous conditions
Abstract
The invention relates to the technical field of retarder control, and discloses an intelligent controller of a hydraulic retarder, which comprises a vehicle speed signal, a power supply system, a whole vehicle CAN signal and an engine exhaust brake, and is characterized in that: the vehicle speed signal is connected with an intelligent controller of the hydraulic retarder, the power supply system is electrically connected with the intelligent controller of the hydraulic retarder, and the engine exhaust brake is connected with the intelligent controller of the hydraulic retarder; the invention also discloses a control method of the intelligent controller of the hydraulic retarder. The invention aims to facilitate the operation of a user, better, safely and reliably control the stable work of the hydraulic retarder, and the CAN bus communication interface is added, so that the invention CAN be used for communicating information interaction with other equipment of a vehicle, reducing control lines and improving the reliability.
Description
Technical Field
The invention relates to the technical field of retarder control, in particular to an intelligent controller of a hydraulic retarder and a control method thereof.
Background
The hydraulic retarder is an auxiliary braking device for automobiles, and is mainly applied to large buses, trucks and urban buses. At present, the automobile transportation industry is developed vigorously, and with the increase of vehicle-mounted quality and the increase of vehicle speed, how to make vehicles operate more efficiently and safely is of great importance. The braking capability of the existing automobile brake can not be synchronously improved due to the limitation of various factors, when the automobile brake is continuously braked for a long time or is braked at a high speed on a long slope, the brake suffers from strong load and generates heat greatly, and the braking capability is reduced, even the brake fails at a high temperature, so that the driving safety is seriously threatened. It is now also specified that commercial vehicles with a vehicle length of more than 9m must be equipped with retarders and other auxiliary braking devices.
The hydraulic retarder overcomes the defects of large power consumption, large heat generation and unsuitability for long-time work of the eddy current retarder, is a retarder product with high efficiency, safety, energy conservation and environmental protection, and has wide market prospect. The device is installed between automobile transmission shaft and gearbox, drives hydraulic rotation and strikes the stator impeller through the rotor impeller, and the stator impeller also can produce a reaction force through hydraulic and act on the stator impeller this moment to hinder the rotor rotation, realize contactless braking. The hydrodynamic retarder utilizes a cooling system of an engine to dissipate heat, heat generated by retarding can be dissipated through a heat exchanger of the hydrodynamic retarder and the cooling system of the engine, heat influence on surrounding parts can not be generated, heat load of the engine can not be increased, retarding torque can not be reduced along with temperature rise, and stable retarding capacity can be kept.
At present, a hydrodynamic retarder generally comprises a stator, a rotor, a proportional valve, an oil duct, a water path, a heat exchanger, a controller and the like. The control system collects a hand-dialing switch gear signal, a pressure sensor signal, an oil temperature sensor signal, a water temperature sensor signal, a vehicle speed signal, an anti-lock brake system (ABS) signal, an accelerator signal and the like, and needs precise intelligent control, so that the operation is safer and more reliable. Moreover, at present, the interactive information of the whole vehicle is numerous, and the traditional controller cannot meet the existing requirements.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides the intelligent controller of the hydraulic retarder and the control method thereof, which are easy to operate by a user, CAN better, safely and reliably control the hydraulic retarder to stably work, are additionally provided with the CAN bus communication interface, CAN communicate with other equipment of a vehicle, reduce control lines and improve the reliability.
In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides an intelligent control ware of hydraulic retarber, includes speed of a motor vehicle signal, power supply system, whole car CAN signal and engine exhaust braking, its characterized in that: the speed signal is connected with an intelligent controller of the hydraulic retarder, the power supply system is electrically connected with the intelligent controller of the hydraulic retarder, and the engine exhaust brake is connected with the intelligent controller of the hydraulic retarder.
Preferably, the vehicle speed signal acquires a vehicle B7/C3 signal, the 'B7/C3 signal' is a standard vehicle speed signal and is an international ISO16844-2 standard specified signal, vehicle speed information sent by other equipment CAN be acquired from a CAN communication bus, and when the vehicle speed is less than 10km/h, the retarder is automatically stopped to work; and when the speed is more than 10km/h, the original working state is automatically recovered.
Preferably, the engine exhaust braking signal CAN be sent through CAN communication, and CAN also be connected through hardware wiring to output a digital signal, when the retarder braking force reaches 100%, the engine combined braking is requested, and the driving safety is ensured.
Preferably, the intelligent controller of the hydraulic retarder further comprises: ABS signal, accelerator pedal signal, air pressure sensor, proportional valve current signal, water temperature sensor, oil temperature sensor;
the ABS signal acquisition is connected with an ABS digital signal of a vehicle body controller, ABS information sent by vehicle equipment CAN be acquired from a CAN communication bus, when the ABS signal is received, the retarder stops working immediately, and when no ABS signal exists, the retarder is delayed for 1s and is restored to the working state of the original retarder;
the retarder is characterized in that an accelerator pedal signal is acquired and connected with an engine controller, the accelerator pedal signal sent by the whole vehicle equipment CAN be acquired from a CAN communication bus, when an accelerator pedal activation signal is received, the retarder stops working immediately, and when no accelerator pedal signal exists, the retarder is delayed for 1s and is restored to the original working state of the retarder;
the air pressure sensor acquires the pressure of a working cavity of the retarder, and when the pressure deviates from a preset pressure value, the intelligent controller adjusts the opening of the proportional valve through a PID algorithm according to the feedback of the pressure sensor to reach the preset pressure value;
the proportional valve is connected with an intelligent controller of the hydraulic retarder through a proportional valve current signal;
the water temperature sensor is arranged at a water outlet of the heat exchanger, when the water temperature is higher than 95 ℃, temperature alarm is carried out to remind a driver, the driver requests to start the cooling fan, and when the water temperature is higher than 105 ℃, the braking force of the retarder is intelligently reduced;
the oil temperature sensor is installed in an oil return channel in a hydraulic retarder body, when the oil temperature is greater than 160 ℃, temperature alarm is carried out to remind a driver, when the oil temperature is greater than 180 ℃, the braking force of the retarder is intelligently reduced, the retarder works in a safe temperature range, and the retarder is safer and more reliable.
Preferably, brake lamp and operating condition pilot lamp, the brake lamp sets up at the vehicle afterbody, and the output of the intelligent control ware of hydraulic retarber is coupled with the input end of brake lamp, the intelligent control ware electric connection of operating condition pilot lamp hydraulic retarber, the real-time demonstration of intelligent control ware and retarber operating condition is on the operating condition pilot lamp, including hand dial switch state, braking torque, braking percentage, oil pocket temperature, cooling water temperature etc. if breaking down, then output fault indication lets the user know the retarber state in real time, more safe and reliable's operation output unit.
Preferably, the intelligent controller of the hydraulic retarder is connected with a hand-operated switch/air pressure switch, the hand-operated switch/air pressure switch is used for retarder braking gear acquisition, and the hardware line acquisition connected with the hand-operated switch or the air pressure switch CAN also receive retarder braking gear information from a CAN communication bus.
Preferably, the manual switch has 0 gear, constant speed gear, 1 gear, 2 gears, 3 gears and 4 gears, when the manual switch is in the constant speed gear, the hydraulic retarder starts to work intelligently, the output braking force changes intelligently, the vehicle speed is ensured to be stable, when the manual switch is in the 1 gear, the hydraulic retarder starts to work and outputs 25% of the rated braking force, when the manual switch is in the 2 gear, the hydraulic retarder starts to work and outputs 50% of the rated braking force, when the manual switch is in the 3 gear, the hydraulic retarder starts to work and outputs 75% of the rated braking force, when the manual switch is in the 4 gear, the hydraulic retarder starts to work and outputs 100% of the rated braking force.
Preferably, the baroswitch has 1 shelves (3PSI), 2 shelves (5PSI), 3 shelves (7PSI), 4 shelves (10PSI), when the baroswitch detects that atmospheric pressure reaches 3PSI, hydraulic retarber begins working, 25% of output rated brake force, when the baroswitch detects that atmospheric pressure reaches 5PSI, hydraulic retarber begins working, 50% of output rated brake force, when the baroswitch detects that atmospheric pressure reaches 7PSI, hydraulic retarber begins working, 75% of output rated brake force, when the baroswitch detects that atmospheric pressure reaches 10PSI, hydraulic retarber begins working, 100% of output rated brake force.
Preferably, the principle of the air pressure switch control is that when a driver brakes the vehicle, the air pressure in an air passage of a pneumatic braking system of the vehicle is gradually increased; when the air pressure switch detects that the air pressure reaches a set value, the controller controls the proportional valve to be opened, and the hydraulic retarder starts to work.
The invention also provides a control method of the intelligent controller of the hydraulic retarder, which comprises the following steps:
the method comprises the following steps: the intelligent controller of the hydraulic retarder receives a hand-operated switch/air pressure switch gear activation request, firstly judges the whole vehicle state, and simultaneously satisfies the following states: when the vehicle speed is more than 10km/h, no ABS signal, no accelerator pedal signal and a braking request are available, the intelligent controller of the hydraulic retarder actively requests to activate the exhaust braking of the engine;
secondly, the intelligent controller of the hydraulic retarder sends a hydraulic retarder request activation signal corresponding to a gear, and the intelligent controller of the hydraulic retarder controls the hydraulic retarder to work;
step three, in the working process of controlling the hydraulic retarder by the intelligent controller of the hydraulic retarder, when a constant-speed braking signal request exists, the constant-speed braking is adopted for the whole vehicle, and when the constant-speed braking signal request does not exist, the constant-torque braking is adopted for the whole vehicle;
step four, whether temperature protection is started or not is judged according to the hydrological sensor and the oil temperature sensor in the braking process, and the work of the hydraulic retarder is further limited;
and fifthly, displaying the working state on a working state indicator lamp in real time by the intelligent controller of the hydraulic retarder, and displaying the gear information to a driver.
Compared with the prior art, the invention provides an intelligent controller of a hydraulic retarder and a control method thereof, and the intelligent controller has the following beneficial effects:
1. according to the intelligent controller of the hydraulic retarder and the control method thereof, through the control effect of the air pressure switch, when a driver brakes the vehicle, the air pressure in the air path of the pneumatic braking system of the vehicle is gradually increased, when the air pressure switch detects that the air pressure reaches a set value, the controller controls the proportional valve to be opened, the hydraulic retarder starts to work, the brake is combined with the air pressure switch for use, and the intelligent controller of the hydraulic retarder has the following advantages: gentle road conditions need not often to use the retarber a bit, can close the manual switch of retarber, detects brake pedal in service behavior with pressure switch, uses retarber braking effect according to demand intelligence, avoids the driver to frequently operate the retarber, improves driving safety.
2. The intelligent controller of the hydraulic retarder and the control method thereof have a constant speed braking function, the deceleration of the vehicle can not change along with the weight of the vehicle and the downhill amplitude during braking, but the intelligent controller can always keep the originally set speed to run without stepping on the brake, so that the driving comfort of the vehicle is better.
3. The intelligent controller of the hydraulic retarder and the control method thereof have a constant-speed cruising function, can receive the current braking percentage sent by the BCU of the vehicle body controller and the required braking percentage sent by the BCU of the vehicle body controller, and utilize the retarder to carry out the braking function of constant-speed cruising, thereby being more energy-saving and environment-friendly.
4. According to the intelligent controller of the hydraulic retarder and the control method of the intelligent controller, the intelligent controller has a CAN communication function, CAN send self state information to a whole vehicle CAN network, or receives signals of devices such as ABS, BMS, instruments and engines from the whole vehicle CAN network, CAN reduce numerous connecting wire harnesses, saves cost, and enables the intelligent controller to be more flexible. The CAN communication function CAN also perform online diagnosis and read state information, current fault information, historical fault information and online upgrade procedures.
Drawings
FIG. 1 is a schematic block diagram of an intelligent controller of the present invention;
FIG. 2 is a flow chart of the control method of the intelligent controller of the present invention.
Detailed Description
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.
Referring to fig. 1-2, an intelligent controller of a hydraulic retarder includes a vehicle speed signal, a power supply system, a vehicle CAN signal, and an engine exhaust brake, where the vehicle speed signal is connected to the intelligent controller of the hydraulic retarder, the power supply system is electrically connected to the intelligent controller of the hydraulic retarder, and the engine exhaust brake is connected to the intelligent controller of the hydraulic retarder.
The speed signal acquisition vehicle B7/C3 signal, the "B7/C3 signal" is a standard speed signal, is an international ISO16844-2 standard specified signal, CAN also obtain the speed information that other apparatuses send from CAN communication bus, when the speed is less than 10km/h, will stop the retarder work automatically; and when the speed is more than 10km/h, the original working state is automatically recovered.
The engine exhaust braking signal CAN be sent through CAN communication, and CAN also be connected through hardware wiring to output a digital signal, when the braking force of the retarder reaches 100%, the engine is requested to be jointly braked, and the driving safety is ensured.
The intelligent controller of the hydraulic retarder further comprises: ABS signal, accelerator pedal signal, air pressure sensor, proportional valve current signal, water temperature sensor, oil temperature sensor;
the ABS signal acquisition is connected with an ABS digital signal of a vehicle body controller, ABS information sent by vehicle equipment CAN be acquired from a CAN communication bus, when the ABS signal is received, the retarder stops working immediately, and when no ABS signal exists, the retarder is delayed for 1s and is restored to the working state of the original retarder;
the retarder is characterized in that an accelerator pedal signal is acquired and connected with an engine controller, the accelerator pedal signal sent by the whole vehicle equipment CAN be acquired from a CAN communication bus, when an accelerator pedal activation signal is received, the retarder stops working immediately, and when no accelerator pedal signal exists, the retarder is delayed for 1s and is restored to the original working state of the retarder;
the air pressure sensor acquires the pressure of a working cavity of the retarder, and when the pressure deviates from a preset pressure value, the intelligent controller adjusts the opening of the proportional valve through a PID algorithm according to the feedback of the pressure sensor to reach the preset pressure value;
the proportional valve is connected with an intelligent controller of the hydraulic retarder through a proportional valve current signal;
the water temperature sensor is arranged at a water outlet of the heat exchanger, when the water temperature is higher than 95 ℃, temperature alarm is carried out to remind a driver, the driver requests to start the cooling fan, and when the water temperature is higher than 105 ℃, the braking force of the retarder is intelligently reduced;
the oil temperature sensor is installed in an oil return channel in a hydraulic retarder body, when the oil temperature is greater than 160 ℃, temperature alarm is carried out to remind a driver, when the oil temperature is greater than 180 ℃, the braking force of the retarder is intelligently reduced, the retarder works in a safe temperature range, and the retarder is safer and more reliable.
Brake lamp and operating condition pilot lamp, the brake lamp sets up at the vehicle afterbody, and the output of the intelligent control ware of hydraulic retarber is coupled with the input end of brake lamp, the intelligent control ware electric connection of operating condition pilot lamp hydraulic retarber, intelligent control ware and retarber operating condition's real-time demonstration are on the operating condition pilot lamp, including hand dial switch state, braking torque, braking percentage, oil pocket temperature, cooling water temperature etc. if breaking down, then output fault indication lets the user know the retarber state in real time, safer and more reliable's operation output unit.
The intelligent controller of the hydraulic retarder is connected with a hand-operated switch/air pressure switch, the hand-operated switch/air pressure switch is used for retarder braking gear collection, and the hardware line collection connected with the hand-operated switch or the air pressure switch CAN also receive retarder braking gear information from a CAN communication bus.
The invention also provides a control method of the intelligent controller of the hydraulic retarder, which comprises the following steps:
the method comprises the following steps: the intelligent controller of the hydraulic retarder receives a hand-operated switch/air pressure switch gear activation request, firstly judges the whole vehicle state, and simultaneously satisfies the following states: when the vehicle speed is more than 10km/h, no ABS signal, no accelerator pedal signal and a braking request are available, the intelligent controller of the hydraulic retarder actively requests to activate the exhaust braking of the engine;
secondly, the intelligent controller of the hydraulic retarder sends a hydraulic retarder request activation signal corresponding to a gear, and the intelligent controller of the hydraulic retarder controls the hydraulic retarder to work;
step three, in the working process of controlling the hydraulic retarder by the intelligent controller of the hydraulic retarder, when a constant-speed braking signal request exists, the constant-speed braking is adopted for the whole vehicle, and when the constant-speed braking signal request does not exist, the constant-torque braking is adopted for the whole vehicle;
step four, whether temperature protection is started or not is judged according to the hydrological sensor and the oil temperature sensor in the braking process, and the work of the hydraulic retarder is further limited;
and fifthly, displaying the working state on a working state indicator lamp in real time by the intelligent controller of the hydraulic retarder, and displaying the gear information to a driver.
According to the intelligent controller of the hydraulic retarder and the control method thereof, through the control effect of the air pressure switch, when a driver brakes the vehicle, the air pressure in the air path of the pneumatic braking system of the vehicle is gradually increased, when the air pressure switch detects that the air pressure reaches a set value, the controller controls the proportional valve to be opened, the hydraulic retarder starts to work, the brake is combined with the air pressure switch for use, and the intelligent controller of the hydraulic retarder has the following advantages: the manual switch of the retarder can be turned off without frequently using the retarder under the condition of a gentle road condition, the service condition of the brake pedal is detected by the pressure switch, the braking effect of the retarder is intelligently used according to the requirement, the driver is prevented from frequently operating the retarder, and the driving safety is improved; the constant-speed braking function is provided, the deceleration of the vehicle can not change along with the weight of the vehicle and the downhill amplitude during braking, the original set speed can be kept to operate all the time, and the vehicle does not need to step on the brake, so that the driving comfort of the vehicle is better; the intelligent controller has the constant-speed cruise function, can receive the current braking percentage sent by the BCU of the vehicle body controller and the required braking percentage sent by the BCU of the vehicle body controller, and performs the braking function of constant-speed cruise by using the retarder, thereby being more energy-saving and environment-friendly; this intelligent control ware has CAN communication function, CAN send self status information to whole car CAN network, perhaps receives the signal of devices such as ABS, BMS, instrument, engine from whole car CAN network, CAN reduce numerous connecting wire restraints, practices thrift the cost, makes intelligent control ware more nimble. The CAN communication function CAN also perform online diagnosis and read state information, current fault information, historical fault information and online upgrade procedures.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. The utility model provides an intelligent control ware of hydraulic retarber, includes speed of a motor vehicle signal, power supply system, whole car CAN signal and engine exhaust braking, its characterized in that: the speed signal is connected with an intelligent controller of the hydraulic retarder, the power supply system is electrically connected with the intelligent controller of the hydraulic retarder, and the engine exhaust brake is connected with the intelligent controller of the hydraulic retarder.
2. The intelligent controller for the hydraulic retarder according to claim 1, wherein: the speed signal acquisition vehicle B7/C3 signal, the "B7/C3 signal" is a standard speed signal, is an international ISO16844-2 standard specified signal, CAN also obtain the speed information that other apparatuses send from CAN communication bus, when the speed is less than 10km/h, will stop the retarder work automatically; and when the speed is more than 10km/h, the original working state is automatically recovered.
3. The intelligent controller for the hydraulic retarder according to claim 1, wherein: the engine exhaust braking signal CAN be sent through CAN communication, and CAN also be connected through hardware wiring to output a digital signal, when the braking force of the retarder reaches 100%, the engine is requested to be jointly braked, and the driving safety is ensured.
4. The intelligent controller for the hydraulic retarder according to claim 1, wherein: the intelligent controller of the hydraulic retarder further comprises: ABS signal, accelerator pedal signal, air pressure sensor, proportional valve current signal, water temperature sensor, oil temperature sensor;
the ABS signal acquisition is connected with an ABS digital signal of a vehicle body controller, ABS information sent by vehicle equipment CAN be acquired from a CAN communication bus, when the ABS signal is received, the retarder stops working immediately, and when no ABS signal exists, the retarder is delayed for 1s and is restored to the working state of the original retarder;
the retarder is characterized in that an accelerator pedal signal is acquired and connected with an engine controller, the accelerator pedal signal sent by the whole vehicle equipment CAN be acquired from a CAN communication bus, when an accelerator pedal activation signal is received, the retarder stops working immediately, and when no accelerator pedal signal exists, the retarder is delayed for 1s and is restored to the original working state of the retarder;
the air pressure sensor acquires the pressure of a working cavity of the retarder, and when the pressure deviates from a preset pressure value, the intelligent controller adjusts the opening of the proportional valve through a PID algorithm according to the feedback of the pressure sensor to reach the preset pressure value;
the proportional valve is connected with an intelligent controller of the hydraulic retarder through a proportional valve current signal;
the water temperature sensor is arranged at a water outlet of the heat exchanger, when the water temperature is higher than 95 ℃, temperature alarm is carried out to remind a driver, the driver requests to start the cooling fan, and when the water temperature is higher than 105 ℃, the braking force of the retarder is intelligently reduced;
the oil temperature sensor is installed in an oil return channel in a hydraulic retarder body, when the oil temperature is greater than 160 ℃, temperature alarm is carried out to remind a driver, when the oil temperature is greater than 180 ℃, the braking force of the retarder is intelligently reduced, the retarder works in a safe temperature range, and the retarder is safer and more reliable.
5. The intelligent controller for the hydraulic retarder according to claim 1, wherein: brake lamp and operating condition pilot lamp, the brake lamp sets up at the vehicle afterbody, and the output of the intelligent control ware of hydraulic retarber is coupled with the input end of brake lamp, the intelligent control ware electric connection of operating condition pilot lamp hydraulic retarber, intelligent control ware and retarber operating condition's real-time demonstration are on the operating condition pilot lamp, including hand dial switch state, braking torque, braking percentage, oil pocket temperature, cooling water temperature etc. if breaking down, then output fault indication lets the user know the retarber state in real time, safer and more reliable's operation output unit.
6. The intelligent controller for the hydraulic retarder according to claim 1, wherein: the intelligent controller of the hydraulic retarder is connected with a hand-operated switch/air pressure switch, the hand-operated switch/air pressure switch is used for retarder braking gear collection, and the hardware line collection connected with the hand-operated switch or the air pressure switch CAN also receive retarder braking gear information from a CAN communication bus.
7. A control method of an intelligent controller of a hydrodynamic retarder, which is applied to the intelligent controller of the hydrodynamic retarder of claims 1-6, and is characterized in that: the control method comprises the following steps:
the method comprises the following steps: the intelligent controller of the hydraulic retarder receives a hand-operated switch/air pressure switch gear activation request, firstly judges the whole vehicle state, and simultaneously satisfies the following states: when the vehicle speed is more than 10km/h, no ABS signal, no accelerator pedal signal and a braking request are available, the intelligent controller of the hydraulic retarder actively requests to activate the exhaust braking of the engine;
secondly, the intelligent controller of the hydraulic retarder sends a hydraulic retarder request activation signal corresponding to a gear, and the intelligent controller of the hydraulic retarder controls the hydraulic retarder to work;
step three, in the working process of controlling the hydraulic retarder by the intelligent controller of the hydraulic retarder, when a constant-speed braking signal request exists, the constant-speed braking is adopted for the whole vehicle, and when the constant-speed braking signal request does not exist, the constant-torque braking is adopted for the whole vehicle;
step four, whether temperature protection is started or not is judged according to the hydrological sensor and the oil temperature sensor in the braking process, and the work of the hydraulic retarder is further limited;
and fifthly, displaying the working state on a working state indicator lamp in real time by the intelligent controller of the hydraulic retarder, and displaying the gear information to a driver.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113954808A (en) * | 2021-10-27 | 2022-01-21 | 一汽解放汽车有限公司 | Hydraulic retarder fault diagnosis method, system, medium and automobile |
| CN114248773A (en) * | 2021-11-24 | 2022-03-29 | 山推工程机械股份有限公司 | Wheel type engineering machinery retarding control system and control method |
| CN114590233A (en) * | 2022-03-09 | 2022-06-07 | 一汽解放汽车有限公司 | Downhill constant speed control method and device and storage medium |
| CN114776736A (en) * | 2022-03-25 | 2022-07-22 | 北京裕峻汽车技术研究院有限公司 | Intelligent control method, system and program product for hydrodynamic retarder |
| CN114919553A (en) * | 2022-05-25 | 2022-08-19 | 中国北方车辆研究所 | Control method of high-power hydraulic retarder |
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| CN113954808A (en) * | 2021-10-27 | 2022-01-21 | 一汽解放汽车有限公司 | Hydraulic retarder fault diagnosis method, system, medium and automobile |
| CN113954808B (en) * | 2021-10-27 | 2023-02-17 | 一汽解放汽车有限公司 | Hydraulic retarder fault diagnosis method, system, medium and automobile |
| CN114248773A (en) * | 2021-11-24 | 2022-03-29 | 山推工程机械股份有限公司 | Wheel type engineering machinery retarding control system and control method |
| CN114248773B (en) * | 2021-11-24 | 2024-03-01 | 山推工程机械股份有限公司 | Wheel type engineering machinery retarding control system and control method |
| CN114590233A (en) * | 2022-03-09 | 2022-06-07 | 一汽解放汽车有限公司 | Downhill constant speed control method and device and storage medium |
| CN114590233B (en) * | 2022-03-09 | 2023-10-27 | 一汽解放汽车有限公司 | Downhill constant speed control method, device and storage medium |
| CN114776736A (en) * | 2022-03-25 | 2022-07-22 | 北京裕峻汽车技术研究院有限公司 | Intelligent control method, system and program product for hydrodynamic retarder |
| CN114776736B (en) * | 2022-03-25 | 2024-04-05 | 北京裕峻汽车技术研究院有限公司 | Intelligent control method, system and program product for hydraulic retarder |
| CN114919553A (en) * | 2022-05-25 | 2022-08-19 | 中国北方车辆研究所 | Control method of high-power hydraulic retarder |
| CN114919553B (en) * | 2022-05-25 | 2023-03-24 | 中国北方车辆研究所 | Control method of high-power hydraulic retarder |
| CN115179917A (en) * | 2022-08-08 | 2022-10-14 | 中车大连机车研究所有限公司 | Liquid-gas combined braking control method for rail transit vehicle |
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