CN113771815A - Vehicle integrated electro-hydraulic braking system device - Google Patents
Vehicle integrated electro-hydraulic braking system device Download PDFInfo
- Publication number
- CN113771815A CN113771815A CN202111038799.XA CN202111038799A CN113771815A CN 113771815 A CN113771815 A CN 113771815A CN 202111038799 A CN202111038799 A CN 202111038799A CN 113771815 A CN113771815 A CN 113771815A
- Authority
- CN
- China
- Prior art keywords
- valve
- oil
- master cylinder
- oil outlet
- brake
- 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.)
- Pending
Links
Images
Classifications
-
- 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
- B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
- B60T13/10—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release
- B60T13/66—Electrical control in fluid-pressure brake systems
- B60T13/68—Electrical control in fluid-pressure brake systems by electrically-controlled valves
- B60T13/686—Electrical control in fluid-pressure brake systems by electrically-controlled valves in hydraulic systems or parts thereof
-
- 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
- B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
- B60T13/10—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release
- B60T13/12—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release the fluid being liquid
- B60T13/14—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release the fluid being liquid using accumulators or reservoirs fed by pumps
- B60T13/142—Systems with master cylinder
- B60T13/145—Master cylinder integrated or hydraulically coupled with booster
-
- 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
- B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
- B60T13/10—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release
- B60T13/12—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release the fluid being liquid
- B60T13/14—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release the fluid being liquid using accumulators or reservoirs fed by pumps
- B60T13/142—Systems with master cylinder
- B60T13/147—In combination with distributor valve
-
- 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
- B60T7/00—Brake-action initiating means
- B60T7/02—Brake-action initiating means for personal initiation
- B60T7/04—Brake-action initiating means for personal initiation foot actuated
- B60T7/06—Disposition of pedal
Landscapes
- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Regulating Braking Force (AREA)
- Braking Systems And Boosters (AREA)
Abstract
The invention discloses a vehicle integrated electro-hydraulic brake system device, which comprises: a liquid storage tank for storing a pressurized medium; a pedal for operating a braking action; and a piston of the brake master cylinder is fixedly connected with the pedal operating handle and used for providing initial brake pressure, and a liquid inlet of a left cavity and a liquid inlet of a right cavity of the brake master cylinder are respectively connected with an oil inlet and an oil outlet of the liquid storage tank. When the brake is normally braked, a driver steps on the liquid storage tank, the displacement sensor collects signals and transmits the signals to the ECU, the ECU sends instruction signals to the valve modules, the first main cylinder decoupling valve and the second main cylinder decoupling valve are electrified and disconnected, the motor in the servo main cylinder rotates to build pressure in the servo main cylinder, and high-pressure brake fluid is pumped into the wheel cylinder group through the transmission mechanism.
Description
Technical Field
The invention relates to the field of electronic hydraulic braking systems, in particular to an integrated electro-hydraulic braking system device for a vehicle.
Background
The existing electronic hydraulic brake system for vehicles mainly comprises an electromagnetic valve, a pressure sensor, a brake master cylinder, a pedal feel simulator, a motor, a servo master cylinder and the like. After a driver steps on a brake pedal, an ECU sends an instruction, a motor builds pressure in a servo main cylinder, and different electromagnetic valves are opened or closed, so that decoupling of vehicle driving and pressure building braking of a brake wheel cylinder are achieved. The decoupling is realized through the on-off of the solenoid valve of ECU control brake master cylinder and the servo master cylinder oil-out of motor to this kind of patent, because of its all adopts controls such as signal of telecommunication, so to operational environment, service behavior, equipment life requires highly, in case the solenoid valve breaks down, will lead to the vehicle braking to receive the influence to take place the safety problem.
In recent years, there is also a proposal to improve the safety of the system by providing a redundant power supply and a redundant solenoid valve. Patent CN112061099A adopts the method of parallelly connected redundant solenoid valve and adopting the independent power supply of redundant power supply at brake master cylinder and servo master cylinder decoupling valve department, can be when the trouble such as outage appears and make the original solenoid valve part can not normally work the time guarantee system still can produce certain brake pressure to improve vehicle driving safety, but this mechanism makes the system become complicated, and along with the further popularization of electrodynamic vehicle, the redundant power supply for the backup can further reduce vehicle mileage, be unfavorable for the electrodynamic energy-conserving change of vehicle trade.
In conclusion, in actual use, the electro-hydraulic brake equipment realizes that the decoupling effect of the input force of the driver and the input force of the motor has high requirements on use conditions and the like, faults are easy to occur, so that safety problems are caused, and the structure is complicated and the power consumption is increased due to the introduction of a redundant power supply and a redundant electromagnetic valve bank.
Disclosure of Invention
The invention aims to provide a vehicle integrated type electro-hydraulic brake system device to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: the method comprises the following steps:
a liquid storage tank for storing a pressurized medium;
a pedal for operating a braking action;
a piston of the brake master cylinder is fixedly connected with the pedal operating handle and used for providing initial brake pressure, and a liquid inlet of a left cavity and a liquid inlet of a right cavity of the brake master cylinder are respectively connected with an oil inlet and an oil outlet of the liquid storage tank;
the pedal feeling simulator is connected with the brake master cylinder and used for providing reaction force in response to the operation of the pedal, an oil inlet of the pedal feeling simulator is connected with an oil outlet of a right cavity of the brake master cylinder, and an oil outlet of the pedal feeling simulator is respectively connected with an oil inlet of the liquid storage tank and an oil inlet of a left cavity of the brake master cylinder;
the servo main cylinder is internally provided with a motor and is used for providing pressure for a pressurized medium through the motor to operate the wheels for braking, and a liquid inlet of the servo main cylinder is respectively connected with a right cavity liquid outlet and a left side liquid outlet of the brake main cylinder;
the oil inlets of the RR and FL are connected with the oil outlet of a left cavity of the brake master cylinder, the oil inlets of the RL and FR are connected with the oil outlet of a right cavity of the brake master cylinder, and the oil inlets of the RR, FL, RL and FR are connected with the oil outlet of the servo master cylinder respectively.
Preferably, a pedal feel simulation valve is arranged between the pedal feel simulator and the brake master cylinder, an oil inlet and an oil outlet of the pedal feel simulation valve are respectively connected with a liquid outlet of the right cavity of the brake master cylinder and an oil inlet of the pedal feel simulator, a first pressure sensor is arranged in the middle of a pipeline between the oil outlet of the pedal feel simulation valve and the oil inlet of the pedal feel simulator, a detection valve is arranged between the liquid storage tank and the brake master cylinder, the oil inlet and the oil outlet of the detection valve are respectively connected with the oil outlet of the liquid storage tank and the liquid inlet of the right cavity of the brake master cylinder, and a displacement sensor is arranged on the surface of the pedal operating handle.
Preferably, a third pressure sensor is arranged in the middle of a pipeline between an oil outlet of the servo main cylinder and oil inlets of RR and FL, a second pressure sensor is arranged in the middle of a pipeline between an oil outlet of the servo main cylinder and oil inlets of RL and FL, a first motor decoupling valve is arranged between the servo main cylinder and RR and FL, an oil inlet and an oil outlet of the first motor decoupling valve are respectively connected with an oil outlet of the servo main cylinder and oil inlets of RR and FL, a second motor decoupling valve is arranged between the servo main cylinder and RL and FR, and an oil inlet and an oil outlet of the second motor decoupling valve are respectively connected with an oil outlet of the servo main cylinder and oil inlets of RL and FR.
Preferably, a first pressure increasing valve is arranged between the brake master cylinder and the RR, an oil inlet and an oil outlet of the first pressure increasing valve are respectively connected with an oil outlet of a left cavity of the brake master cylinder and an oil inlet of the RR, a second pressure increasing valve is arranged between the brake master cylinder and the FL, and an oil inlet and an oil outlet of the second pressure increasing valve are respectively connected with an oil outlet of the left cavity of the brake master cylinder and an oil inlet of the FL.
Preferably, a third pressure increasing valve is arranged between the brake master cylinder and the RL, an oil inlet and an oil outlet of the third pressure increasing valve are respectively connected with an oil outlet of a right cavity of the brake master cylinder and an oil inlet of the RL, a fourth pressure increasing valve is arranged between the brake master cylinder and the FR, and an oil inlet and an oil outlet of the fourth pressure increasing valve are respectively connected with an oil outlet of the right cavity of the brake master cylinder and an oil inlet of the FR.
Preferably, a first pressure reducing valve is arranged between the first pressure increasing valve and the liquid storage tank, an oil inlet and an oil outlet of the first pressure reducing valve are respectively connected with an oil outlet of the first pressure increasing valve and an oil inlet of the liquid storage tank, a second pressure reducing valve is arranged between the second pressure increasing valve and the liquid storage tank, and an oil inlet and an oil outlet of the second pressure reducing valve are respectively connected with an oil outlet of the second pressure increasing valve and an oil inlet of the liquid storage tank.
Preferably, a third pressure reducing valve is arranged between the third pressure increasing valve and the liquid storage tank, an oil inlet and an oil outlet of the third pressure reducing valve are respectively connected with an oil outlet of the third pressure increasing valve and an oil inlet of the liquid storage tank, a fourth pressure reducing valve is arranged between the fourth pressure increasing valve and the liquid storage tank, an oil inlet and an oil outlet of the fourth pressure reducing valve are respectively connected with an oil outlet of the fourth pressure increasing valve and an oil inlet of the liquid storage tank, and oil outlets of the first pressure reducing valve, the second pressure reducing valve, the third pressure reducing valve and the fourth pressure reducing valve are communicated with each other.
Preferably, a first master cylinder decoupling valve is arranged between the brake master cylinder and the RR and FL, an oil inlet and an oil outlet of the first master cylinder decoupling valve are respectively connected with an oil outlet of a left cavity of the brake master cylinder and oil inlets of the RR and FL, a second master cylinder decoupling valve is arranged between the brake master cylinder and the RL and FR, and an oil inlet and an oil outlet of the second master cylinder decoupling valve are respectively connected with an oil outlet of a right cavity of the brake master cylinder and oil inlets of the RR and FL.
Compared with the prior art, the invention has the beneficial effects that:
1. during conventional braking, a driver steps on the liquid storage tank, the displacement sensor collects signals and transmits the signals to the ECU, the ECU sends instruction signals to the valve modules, the first main cylinder decoupling valve and the second main cylinder decoupling valve are electrified and disconnected, the motor in the servo main cylinder rotates to build pressure in the servo main cylinder, and high-pressure brake fluid is pumped into the wheel cylinder group through the transmission mechanism;
2. the invention also adopts the first motor decoupling valve and the second motor decoupling valve as pure mechanical one-way valves, and the first main cylinder decoupling valve and the second main cylinder decoupling valve as normally open valves, so that under the condition of power failure, the brake pressure can still be generated, under the active brake function, the situation that the pressure cannot be normally built up because the first motor decoupling valve and the second motor decoupling valve are failed is avoided, the product volume cannot be increased due to the modification, the equipment volume is saved to a certain extent, in the active brake mode, the ECU sends instruction signals to all valve modules, the first main cylinder decoupling valve and the second main cylinder decoupling valve are electrically disconnected, the motor in the servo main cylinder rotates to build up the pressure in the servo main cylinder, and high-pressure brake fluid is pumped into the wheel cylinder group through the transmission mechanism; when the whole system is powered on or the electromagnetic valve is in failure, when a driver treads a pedal, the first main cylinder decoupling valve and the second main cylinder decoupling valve are always in a normally open state, the first motor decoupling valve and the second motor decoupling valve are respectively a one-way valve, brake fluid cannot reversely flow back to the liquid storage tank through the servo main cylinder part, and then high-pressure brake fluid is effectively established in the servo main cylinder and flows into the brake wheel cylinder group, so that a certain brake effect is generated, brake redundancy is realized, and the safety of the driver is guaranteed.
Drawings
Fig. 1 is a schematic diagram of the overall structure of an integrated electro-hydraulic brake system device of a vehicle.
In the figure: 1. a liquid storage tank; 2. a pedal; 3. a brake master cylinder; 4. a pedal feel simulation valve; 5. a pedal feel simulator; 6. a servo master cylinder; 7. a first motor decoupling valve; 8. a second motor decoupling valve; 9. a check valve; 10. a displacement sensor; 11. a first pressure sensor; 12. a second pressure sensor; 13. a third pressure sensor; 14. a first pressure increasing valve; 15. a second pressure increasing valve; 16. a first pressure reducing valve; 17. a second pressure reducing valve; 18. a third pressure increasing valve; 19. a fourth pressure increasing valve; 20. a third pressure reducing valve; 21. a fourth pressure reducing valve; 22. a first master cylinder decoupling valve; 23. a second master cylinder decoupling valve.
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, the present invention provides a technical solution: the method comprises the following steps:
a liquid storage tank 1 for storing a pressurized medium;
a pedal 2 for operating a braking action;
a piston of the brake master cylinder 3 is fixedly arranged with an operating handle of the pedal 2 and is used for providing initial brake pressure, and a liquid inlet of a left cavity and a liquid inlet of a right cavity of the brake master cylinder 3 are respectively connected with an oil inlet and an oil outlet of the liquid storage tank 1;
the pedal feeling simulator 5 is connected with the brake master cylinder 3 and used for providing reaction force in response to the operation of the pedal 2, an oil inlet of the pedal feeling simulator 5 is connected with a liquid outlet of a right cavity of the brake master cylinder 3, and an oil outlet of the pedal feeling simulator 5 is respectively connected with a liquid inlet of the liquid storage tank 1 and a liquid inlet of a left cavity of the brake master cylinder 3;
a servo main cylinder 6, which is internally provided with a motor and is used for providing pressure for a pressurized medium through the motor to operate the wheels for braking, wherein a liquid inlet of the servo main cylinder 6 is respectively connected with a right cavity liquid outlet and a left side liquid outlet of the brake main cylinder 3;
and the wheel cylinder group comprises RR, FL, RL and FR, oil inlets of the RR and FL are connected with an oil outlet of a left cavity of the brake master cylinder 3, oil inlets of the RL and FR are connected with an oil outlet of a right cavity of the brake master cylinder 3, and oil inlets of the RR, FL, RL and FR are connected with an oil outlet of the servo master cylinder 6 respectively.
A pedal feeling simulation valve 4 is arranged between the pedal feeling simulator 5 and the brake master cylinder 3, an oil inlet and an oil outlet of the pedal feeling simulation valve 4 are respectively connected with a liquid outlet of the right cavity of the brake master cylinder 3 and an oil inlet of the pedal feeling simulator 5, a first pressure sensor 11 is arranged in the middle of a pipeline between the oil outlet of the pedal feeling simulation valve 4 and the oil inlet of the pedal feeling simulator 5, a detection valve 9 is arranged between the liquid storage tank 1 and the brake master cylinder 3, an oil inlet and an oil outlet of the detection valve 9 are respectively connected with the oil outlet of the liquid storage tank 1 and a liquid inlet of the right cavity of the brake master cylinder 3, and a displacement sensor 10 is arranged on the surface of an operating handle of the pedal 2.
The middle part of a pipeline between an oil outlet of the servo main cylinder 6 and oil inlets of RR and FL is provided with a third pressure sensor 13, the middle part of a pipeline between an oil outlet of the servo main cylinder 6 and oil inlets of RL and FL is provided with a second pressure sensor 12, a first motor decoupling valve 7 is arranged between the servo main cylinder 6 and RR and FL, an oil inlet and an oil outlet of the first motor decoupling valve 7 are respectively connected with an oil outlet of the servo main cylinder 6 and oil inlets of RR and FL, a second motor decoupling valve 8 is arranged between the servo main cylinder 6 and RL and FR, and an oil inlet and an oil outlet of the second motor decoupling valve 8 are respectively connected with an oil outlet of the servo main cylinder 6 and oil inlets of RL and FR.
A first pressure increasing valve 14 is arranged between the brake main cylinder 3 and the RR, an oil inlet and an oil outlet of the first pressure increasing valve 14 are respectively connected with an oil outlet of a left cavity of the brake main cylinder 3 and an oil inlet of the RR, a second pressure increasing valve 15 is arranged between the brake main cylinder 3 and the FL, and an oil inlet and an oil outlet of the second pressure increasing valve 15 are respectively connected with an oil outlet of the left cavity of the brake main cylinder 3 and an oil inlet of the FL.
A third pressure increasing valve 18 is arranged between the brake main cylinder 3 and the RL, an oil inlet and an oil outlet of the third pressure increasing valve 18 are respectively connected with an oil outlet of a right cavity of the brake main cylinder 3 and an oil inlet of the RL, a fourth pressure increasing valve 19 is arranged between the brake main cylinder 3 and the FR, and an oil inlet and an oil outlet of the fourth pressure increasing valve 19 are respectively connected with an oil outlet of the right cavity of the brake main cylinder 3 and an oil inlet of the FR.
A first pressure reducing valve 16 is arranged between the first pressure increasing valve 14 and the liquid storage tank 1, an oil inlet and an oil outlet of the first pressure reducing valve 16 are respectively connected with an oil outlet of the first pressure increasing valve 14 and an oil inlet of the liquid storage tank 1, a second pressure reducing valve 17 is arranged between the second pressure increasing valve 15 and the liquid storage tank 1, and an oil inlet and an oil outlet of the second pressure reducing valve 17 are respectively connected with an oil outlet of the second pressure increasing valve 15 and an oil inlet of the liquid storage tank 1.
A third pressure reducing valve 20 is arranged between the third pressure increasing valve 18 and the liquid storage tank 1, an oil inlet and an oil outlet of the third pressure reducing valve 20 are respectively connected with an oil outlet of the third pressure increasing valve 18 and an oil inlet of the liquid storage tank 1, a fourth pressure reducing valve 21 is arranged between the fourth pressure increasing valve 19 and the liquid storage tank 1, an oil inlet and an oil outlet of the fourth pressure reducing valve 21 are respectively connected with an oil outlet of the fourth pressure increasing valve 19 and an oil inlet of the liquid storage tank 1, and oil outlets of the first pressure reducing valve 16, the second pressure reducing valve 17, the third pressure reducing valve 20 and the fourth pressure reducing valve 21 are communicated with each other.
A first master cylinder decoupling valve 22 is arranged between the master cylinder 3 and the RR and FL, an oil inlet and an oil outlet of the first master cylinder decoupling valve 22 are respectively connected with an oil outlet of a left cavity of the master cylinder 3 and oil inlets of the RR and FL, a second master cylinder decoupling valve 23 is arranged between the master cylinder 3 and the RL and FR, an oil inlet and an oil outlet of the second master cylinder decoupling valve 23 are respectively connected with an oil outlet of a right cavity of the master cylinder 3 and oil inlets of the RR and FL, the first master cylinder decoupling valve 22, the second master cylinder decoupling valve 23, the detection valve 9, the first pressure increasing valve 14, the second pressure increasing valve 15, the third pressure increasing valve 18 and the fourth pressure increasing valve 19 are normally open valves, and the first pressure reducing valve 16, the second pressure reducing valve 17, the third pressure reducing valve 20 and the fourth pressure reducing valve 21 are normally closed valves.
The working principle is as follows: when in use, the invention mainly comprises the following three braking modes:
a liquid storage tank 1: a normal mode;
a pedal 2: an active mode;
brake master cylinder 3: a power failure mode.
A liquid storage tank 1: normal mode. In a conventional mode, a driver steps on a pedal 2, a displacement sensor 10 acquires a signal and transmits the signal to a system ECU module, at the moment, a first main cylinder decoupling valve 22 and a second main cylinder decoupling valve 23 are electrically disconnected, a pedal feeling simulation valve 4 is electrically connected, other electromagnetic valves are maintained in a normal state, high-pressure brake fluid generated in a brake main cylinder 3 when the driver steps on the pedal 2 flows into a pedal feeling simulator 5 through the pedal feeling simulation valve 4 so as to meet the brake feeling of the driver, meanwhile, the ECU sends a signal to a motor, the motor works to drive a piston in a servo main cylinder 6 to translate, so that the high-pressure brake fluid meeting the brake requirement of the driver is established in the servo main cylinder 6 and passes through a first motor decoupling valve 7 and a second motor decoupling valve 8, and at the moment, the first main cylinder decoupling valve 22 and the second main cylinder decoupling valve 23 are disconnected, only the parts of the first pressure increasing valve 14, the second pressure increasing valve 15, the third pressure increasing valve 18 and the fourth pressure increasing valve 19 corresponding to the four wheel cylinders can flow through, and the corresponding first pressure reducing valve 16, the second pressure reducing valve 17, the third pressure reducing valve 20 and the fourth pressure reducing valve 21 of the four wheel cylinders are disconnected, so that the pressure is built in the wheel cylinders, and the pressure building brake under the conventional mode is realized;
a pedal 2: active mode. In the active mode, a driver does not find potential safety hazards existing in driving, the vehicle judges that the vehicle needs to be braked to avoid risks through a sensing system equipped in the vehicle, at the moment, the driver does not tread the pedal 2, the ECU actively sends out an instruction, at the moment, the first main cylinder decoupling valve 22 and the second main cylinder decoupling valve 23 are powered on and off, other valves keep normal states in a conventional mode, the ECU simultaneously sends signals to a motor in the servo main cylinder 6 and enables the motor to be started to push a piston in the servo main cylinder 6 to translate, so that high-pressure brake fluid is established in the servo main cylinder 6, the high-pressure brake fluid respectively flows into a brake wheel cylinder group through the first motor decoupling valve 7, the second motor decoupling valve 8, the first booster valve 14, the second booster valve 15, the third booster valve 18 and the fourth booster valve 19 and establishes high-pressure braking force in the brake wheel cylinder group, the braking requirement of the vehicle is met, the driving risk ignored by a driver is avoided, and the safety of the vehicle is improved;
brake master cylinder 3: a power failure mode. In this mode, the system power fails or there is another fault. The driver finds that braking is needed to avoid risks, and then steps on the pedal 2, at the moment, a fault exists due to system failure, the electromagnetic valve in the whole system is maintained as a normal state in a conventional mode, at the moment, due to the stepping of the driver, high-pressure brake fluid established in the brake master cylinder 3 flows through the first master cylinder decoupling valve 22 and the second master cylinder decoupling valve 23 which are conducted in the normal state, and then enters the four brake wheel cylinder groups through the first booster valve 14, the second booster valve 15, the third booster valve 18 and the fourth booster valve 19, so that starting brake pressure is established, the most basic brake pressure establishment can be realized by the driver under the fault modes such as system power failure and the like, and the vehicle running safety is guaranteed.
Based on the hydraulic oil path arrangement structure, the invention designs the equipment for vehicle electro-hydraulic braking, which comprises at least one motor, a plurality of hydraulic valves, a pedal feel simulator 5, a brake main cylinder 3, a servo main cylinder 6 and the like, wherein the equipment simplifies the system by setting a first motor decoupling valve 7 and a second motor decoupling valve 8 as one-way valves, effectively improves the usable working condition range of the system, and reduces the power consumption of the system to a certain extent.
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 (8)
1. A vehicle integrated form electricity liquid braking system device which characterized in that: the method comprises the following steps:
a liquid storage tank (1) for storing a pressurized medium;
a pedal (2) for operating a braking action;
a piston of the brake master cylinder (3) is fixedly connected with the operating handle of the pedal (2) and used for providing initial brake pressure, and a liquid inlet of a left cavity and a liquid inlet of a right cavity of the brake master cylinder (3) are respectively connected with an oil inlet and an oil outlet of the liquid storage tank (1);
the pedal feeling simulator (5) is connected with the brake master cylinder (3) and is used for providing reaction force responding to the operation of the pedal (2), an oil inlet of the pedal feeling simulator (5) is connected with a liquid outlet of a right cavity of the brake master cylinder (3), and an oil outlet of the pedal feeling simulator (5) is respectively connected with a liquid inlet of the liquid storage tank (1) and a liquid inlet of a left cavity of the brake master cylinder (3);
the servo main cylinder (6) is internally provided with a motor and is used for providing pressure for a pressurized medium through the motor to operate the wheels to brake, and a liquid inlet of the servo main cylinder (6) is respectively connected with a right cavity liquid outlet and a left side liquid outlet of the brake main cylinder (3);
the wheel cylinder group comprises RR, FL, RL and FR, oil inlets of the RR and FL are connected with an oil outlet of a left cavity of the brake master cylinder (3), oil inlets of the RL and FR are connected with an oil outlet of a right cavity of the brake master cylinder (3), and oil inlets of the RR, FL, RL and FR are connected with an oil outlet of the servo master cylinder (6) respectively.
2. A vehicle integrated electro-hydraulic brake system apparatus as defined in claim 1, wherein: a pedal feeling simulation valve (4) is arranged between the pedal feeling simulator (5) and the brake master cylinder (3), an oil inlet and an oil outlet of the pedal feeling simulation valve (4) are connected with a liquid outlet of the right cavity of the brake master cylinder (3) and an oil inlet of the pedal feeling simulator (5) respectively, a first pressure sensor (11) is arranged in the middle of a pipeline between the oil outlet of the pedal feeling simulation valve (4) and the oil inlet of the pedal feeling simulator (5), a detection valve (9) is arranged between the liquid storage tank (1) and the brake master cylinder (3), the oil inlet and the oil outlet of the detection valve (9) are connected with the oil outlet of the liquid storage tank (1) and a liquid inlet of the right cavity of the brake master cylinder (3) respectively, and a displacement sensor (10) is arranged on the surface of an operating handle of the pedal (2).
3. A vehicle integrated electro-hydraulic brake system apparatus as defined in claim 1, wherein: the hydraulic servo control system is characterized in that a third pressure sensor (13) is arranged in the middle of a pipeline between an oil outlet of the servo main cylinder (6) and oil inlets of RR and FL, a second pressure sensor (12) is arranged in the middle of a pipeline between an oil outlet of the servo main cylinder (6) and oil inlets of RL and FL, a first motor decoupling valve (7) is arranged between the servo main cylinder (6) and RR and FL, an oil inlet and an oil outlet of the first motor decoupling valve (7) are respectively connected with an oil outlet of the servo main cylinder (6) and oil inlets of RR and FL, a second motor decoupling valve (8) is arranged between the servo main cylinder (6) and RL and FR, and an oil inlet and an oil outlet of the second motor decoupling valve (8) are respectively connected with an oil outlet of the servo main cylinder (6) and oil inlets of RL and FR.
4. A vehicle integrated electro-hydraulic brake system apparatus as defined in claim 1, wherein: a first pressure increasing valve (14) is arranged between the brake master cylinder (3) and the RR, an oil inlet and an oil outlet of the first pressure increasing valve (14) are respectively connected with an oil outlet of a left cavity of the brake master cylinder (3) and an oil inlet of the RR, a second pressure increasing valve (15) is arranged between the brake master cylinder (3) and the FL, and an oil inlet and an oil outlet of the second pressure increasing valve (15) are respectively connected with an oil outlet of the left cavity of the brake master cylinder (3) and an oil inlet of the FL.
5. A vehicle integrated electro-hydraulic brake system apparatus as defined in claim 1, wherein: a third booster valve (18) is arranged between the brake master cylinder (3) and the RL, an oil inlet and an oil outlet of the third booster valve (18) are respectively connected with an oil outlet of a right cavity of the brake master cylinder (3) and an oil inlet of the RL, a fourth booster valve (19) is arranged between the brake master cylinder (3) and the FR, and an oil inlet and an oil outlet of the fourth booster valve (19) are respectively connected with an oil outlet of the right cavity of the brake master cylinder (3) and an oil inlet of the FR.
6. A vehicle integrated electro-hydraulic brake system apparatus according to claim 5, wherein: a first pressure reducing valve (16) is arranged between the first pressure increasing valve (14) and the liquid storage tank (1), an oil inlet and an oil outlet of the first pressure reducing valve (16) are respectively connected with an oil outlet of the first pressure increasing valve (14) and an oil inlet of the liquid storage tank (1), a second pressure reducing valve (17) is arranged between the second pressure increasing valve (15) and the liquid storage tank (1), and an oil inlet and an oil outlet of the second pressure reducing valve (17) are respectively connected with an oil outlet of the second pressure increasing valve (15) and an oil inlet of the liquid storage tank (1).
7. A vehicle integrated electro-hydraulic brake system apparatus according to claim 5, wherein: a third pressure reducing valve (20) is arranged between the third pressure increasing valve (18) and the liquid storage tank (1), an oil inlet and an oil outlet of the third pressure reducing valve (20) are respectively connected with an oil outlet of the third pressure increasing valve (18) and an oil inlet of the liquid storage tank (1), a fourth pressure reducing valve (21) is arranged between the fourth pressure increasing valve (19) and the liquid storage tank (1), an oil inlet and an oil outlet of the fourth pressure reducing valve (21) are respectively connected with an oil outlet of the fourth pressure increasing valve (19) and an oil inlet of the liquid storage tank (1), and oil outlets of the first pressure reducing valve (16), the second pressure reducing valve (17), the third pressure reducing valve (20) and the fourth pressure reducing valve (21) are communicated with each other.
8. A vehicle integrated electro-hydraulic brake system apparatus as defined in claim 1, wherein: a first master cylinder decoupling valve (22) is arranged between the master cylinder (3) and the RR and FL, an oil inlet and an oil outlet of the first master cylinder decoupling valve (22) are respectively connected with an oil outlet of a left cavity of the master cylinder (3) and oil inlets of the RR and FL, a second master cylinder decoupling valve (23) is arranged between the master cylinder (3) and the RL and FR, and an oil inlet and an oil outlet of the second master cylinder decoupling valve (23) are respectively connected with an oil outlet of a right cavity of the master cylinder (3) and oil inlets of the RR and FL.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111038799.XA CN113771815A (en) | 2021-09-06 | 2021-09-06 | Vehicle integrated electro-hydraulic braking system device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111038799.XA CN113771815A (en) | 2021-09-06 | 2021-09-06 | Vehicle integrated electro-hydraulic braking system device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113771815A true CN113771815A (en) | 2021-12-10 |
Family
ID=78841091
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111038799.XA Pending CN113771815A (en) | 2021-09-06 | 2021-09-06 | Vehicle integrated electro-hydraulic braking system device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113771815A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114684093A (en) * | 2022-02-17 | 2022-07-01 | 北京英创汇智科技有限公司 | Line control redundant braking system for high-level automatic driving |
| CN115009247A (en) * | 2022-07-08 | 2022-09-06 | 燕山大学 | EHB drive-by-wire braking system with redundancy function |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20060102570A (en) * | 2005-03-24 | 2006-09-28 | 주식회사 만도 | Electro-hydraulic brake system |
| US20130111897A1 (en) * | 2011-11-04 | 2013-05-09 | Robert Bosch Gmbh | Pedal oscillation suppression |
| CN204196887U (en) * | 2014-10-13 | 2015-03-11 | 陈晶杰 | Full decoupling EHB and corresponding vehicle |
| CN107891850A (en) * | 2017-12-18 | 2018-04-10 | 浙江力邦合信智能制动系统股份有限公司 | A kind of integrated electric hydraulic brake system with decoupling function |
| CN207875612U (en) * | 2018-01-18 | 2018-09-18 | 万向钱潮股份有限公司 | A kind of line traffic control electro-hydraulic brake system |
| CN109760656A (en) * | 2018-12-28 | 2019-05-17 | 上海擎度汽车科技有限公司 | Hydraulic decoupling type electronic hydraulic brake system |
| CN208897044U (en) * | 2018-11-02 | 2019-05-24 | 吉林大学 | A kind of full decoupled electronic hydraulic brake system |
| CN209955966U (en) * | 2018-12-28 | 2020-01-17 | 万向钱潮股份有限公司 | Split type electro-hydraulic brake device |
| CN111231922A (en) * | 2020-02-17 | 2020-06-05 | 安徽理工大学 | Decoupling type electro-hydraulic brake system with safety redundancy |
-
2021
- 2021-09-06 CN CN202111038799.XA patent/CN113771815A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20060102570A (en) * | 2005-03-24 | 2006-09-28 | 주식회사 만도 | Electro-hydraulic brake system |
| US20130111897A1 (en) * | 2011-11-04 | 2013-05-09 | Robert Bosch Gmbh | Pedal oscillation suppression |
| CN204196887U (en) * | 2014-10-13 | 2015-03-11 | 陈晶杰 | Full decoupling EHB and corresponding vehicle |
| CN107891850A (en) * | 2017-12-18 | 2018-04-10 | 浙江力邦合信智能制动系统股份有限公司 | A kind of integrated electric hydraulic brake system with decoupling function |
| CN207875612U (en) * | 2018-01-18 | 2018-09-18 | 万向钱潮股份有限公司 | A kind of line traffic control electro-hydraulic brake system |
| CN208897044U (en) * | 2018-11-02 | 2019-05-24 | 吉林大学 | A kind of full decoupled electronic hydraulic brake system |
| CN109760656A (en) * | 2018-12-28 | 2019-05-17 | 上海擎度汽车科技有限公司 | Hydraulic decoupling type electronic hydraulic brake system |
| CN209955966U (en) * | 2018-12-28 | 2020-01-17 | 万向钱潮股份有限公司 | Split type electro-hydraulic brake device |
| CN111231922A (en) * | 2020-02-17 | 2020-06-05 | 安徽理工大学 | Decoupling type electro-hydraulic brake system with safety redundancy |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114684093A (en) * | 2022-02-17 | 2022-07-01 | 北京英创汇智科技有限公司 | Line control redundant braking system for high-level automatic driving |
| CN115009247A (en) * | 2022-07-08 | 2022-09-06 | 燕山大学 | EHB drive-by-wire braking system with redundancy function |
| CN115009247B (en) * | 2022-07-08 | 2023-09-26 | 燕山大学 | EHB line control braking system with redundancy function |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110962815B (en) | Automatic driving-oriented line control hydraulic brake control system and control method thereof | |
| CN207875612U (en) | A kind of line traffic control electro-hydraulic brake system | |
| US20020050739A1 (en) | Method and device for controlling wheel brakes | |
| CN110182187B (en) | Energy feedback type active braking system with failure protection capability and control method | |
| CN209955966U (en) | Split type electro-hydraulic brake device | |
| CN109927696B (en) | Vehicle electronic hydraulic braking system and braking method | |
| CN101254785A (en) | Brake control apparatus and brake control method | |
| CN107458365A (en) | Decoupled brake-by-wire system and control method thereof | |
| CN206633997U (en) | A kind of EHB | |
| CN203766754U (en) | Separating type brake master cylinder assembly with driving hydraulic power assistance and driven hydraulic power assistance | |
| US10906519B2 (en) | Electronic brake system and method for operating the same | |
| CN1994793A (en) | Brake control apparatus and method for controlling the brake | |
| CN107444365A (en) | Electronic line control brake system | |
| CN113525317A (en) | Braking system suitable for automatic driving and control method | |
| CN113771815A (en) | Vehicle integrated electro-hydraulic braking system device | |
| US6089678A (en) | Hydraulic braking systems for vehicles | |
| CN104859625A (en) | Vehicle integrated electro-hydraulic brake (EHB) system | |
| US20240132039A1 (en) | Brake-by-wire system and control method | |
| CN106904159A (en) | A kind of EHB | |
| CN214295905U (en) | Integrated brake-by-wire system with self-checking redundancy function | |
| CN113085827A (en) | Braking system and automobile | |
| CN116252765B (en) | Integrated braking and redundant braking system for vehicle and vehicle | |
| CN117584909A (en) | Redundant braking system for vehicle, control method and vehicle | |
| CN214084201U (en) | Integrated brake-by-wire system with self-checking redundancy function | |
| CN114684093A (en) | Line control redundant braking system for high-level automatic driving |
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 | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20211210 |
|
| RJ01 | Rejection of invention patent application after publication |