CN207875615U - Decoupled brake-by-wire system - Google Patents
Decoupled brake-by-wire system Download PDFInfo
- Publication number
- CN207875615U CN207875615U CN201721198958.1U CN201721198958U CN207875615U CN 207875615 U CN207875615 U CN 207875615U CN 201721198958 U CN201721198958 U CN 201721198958U CN 207875615 U CN207875615 U CN 207875615U
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- valve
- pipeline
- master cylinder
- circuit
- brake system
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- 238000011161 development Methods 0.000 description 5
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- 238000010276 construction Methods 0.000 description 1
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Classifications
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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
- 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
- B60T13/74—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 electrical assistance or drive
- B60T13/745—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 electrical assistance or drive acting on a hydraulic system, e.g. a master cylinder
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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
- 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
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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
- B60T7/00—Brake-action initiating means
- B60T7/12—Brake-action initiating means for automatic initiation; for initiation not subject to will of driver or passenger
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- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Regulating Braking Force (AREA)
- Valves And Accessory Devices For Braking Systems (AREA)
Abstract
The utility model discloses a drive-by-wire braking system of decoupling zero, including oilcan (01), oilcan play liquid check valve (02, 03), brake master cylinder (04), footboard sensation simulator PFS (06), block valve (07, 08), linear normally closed valve (11), high pressure energy storage ware pressure sensor (12), high pressure energy storage ware (13), motor-pump pressure boost system (14), pipeline pressure boost valve (15, 16, 17, 18), pipeline relief pressure valve (19, 20, 21, 22), footboard stroke sensor (23) and ECU (31). By adopting the technical scheme, compared with the configuration scheme of driving the auxiliary main cylinder by the motor, the response requirement on the motor-pump system is reduced; the power requirements of the motor and the ECU are reduced; the safety performance of the system is improved.
Description
Technical field
The utility model belongs to the technical field of brake system of car.More specifically, the utility model is related to a kind of decouplings
Line control brake system.
Background technology
The power-assisted of traditional brake system of car is the vacuum generated using engine work or electronic vacuum pump work
The vacuum of generation realizes that pressure power-assisted is built in braking in vacuum booster.As shown in figure 17, it is traditional brake system of car, packet
Include vacuum booster 4.Brake pedal 6 is stepped on when operator brake, driving master cylinder 3 passes through automatically controlled pressure regulation unit ABS/
ESC2 carries out brake 1 to build pressure generation brake fluid pressure；Vacuum booster is needed to compare pedal force during this
Example amplification, allows driver to realize the brake force for meeting vehicle braking requirement under suitable pedal sense power.
With the development of new energy sources for automobile technology and braking technology, the braking system of no vacuum servo is produced increasingly
Big demand.It is mainly reflected in two aspects：First, the development of new-energy automobile, for example, electric vehicle development so that vehicle
It is upper not carry out vacuumizing power source-engine to vacuum booster, it is necessary to an external electronic vacuum pump, the disadvantage is that consumption
It is apparent with electric energy, noise；Second is that the development of active safety braking technology, such as vehicle is in collocation radar wave or visual sensor
After can recognize that expected danger, to vehicle actively build that compacting is dynamic or emergency braking collision avoidance.Therefore line control brake system
Technology has obtained some development, is analyzed the prior art below by retrieval Patents documents：
As shown in figure 18, number of patent application is that the patent document of US20140028084A1 discloses a kind of line traffic control of decoupling
The technical solution of braking.Scheme configuration sets up out driver's supercharging mechanical module by master cylinder 2, pedal sense simulator 3, by
Motor 5 drives secondary master cylinder to realize line traffic control boost pressure regulation, is distributed in pipeline by 18 solenoid valves, the different location in circuit is pressed to realize
Power is controlled and is adjusted.The patent formula solenoid valve is more, and the very high power of mode demand motor of secondary master cylinder supercharging, right
The operating current of ECU control units requires to be up to hundreds of amperes；When generating system powers off in braking process, it will lose and help
Power function of increasing pressure and foot can be pushed up suddenly；It is powered off during AEB, it will lose AEB functions；At isolating valve (23a, 23b)
When appearance leaks or is out of control, AEB functions can partial loss.It is that configuration scheme requires design standard high, configuration scheme in brief
Safety is defective.
Utility model content
The utility model provides a kind of line control brake system of decoupling, the purpose is to：Avoid high power motor, high current
ECU；Safeguard protection of the system under failure state is significantly increased, it is ensured that under some abnormal conditions system can play safety can
The braking ability leaned on.
To achieve the goals above, the technical solution that the utility model is taken is：
The line control brake system of decoupling provided by the utility model, including oil can, oil can go out liquid check valve, master cylinder,
Pedal sense simulator PFS, isolating valve, linear normally close valve, high pressure accumulator pressure sensor, high pressure accumulator, motor-pump increase
Pressure system, pipeline supercharging valve, pipeline pressure reducing valve, pedal travel sensor and ECU, the ECU is for controlling solenoid valve and electricity
Machine work, obtain pressure sensor and stroke sensor signal and with vehicle other sensors, electronic control module interactive signal；
It is respectively provided with a check valve on two pipelines between the master cylinder and oil can, the check valve is led
Logical direction is from oil can to master cylinder；
One of the pedal sense simulator PFS and master cylinder chamber are connect；The pedal sense simulator PFS
Pedal sense control valve is set on the pipeline between master cylinder chamber；
The pipeline supercharging valve both ends, wherein one end are separately connected the brake on vehicle；After the other end connects two-by-two,
Then it is separately connected isolating valve, again；
The pipeline pressure reducing valve is connect with each pipeline supercharging valve respectively, and the oil outlet of each pressure reducing valve is connected to oil
Pot；
The isolating valve, is connect with the two chambers of master cylinder respectively；
The inlet port of the motor-pump pressure charging system is connect with oil can, oil outlet and the high pressure accumulator and
Linear normally close valve connection；
The linear normally close valve is connected on the fuel-displaced circuit of two chambers of master cylinder, is connected respectively with two isolating valve,s
Connect, also with pipeline supercharging valve group at circuit and the circuit of pipeline supercharging valve, composition be connected；
The ECU is controlled the rotating speed of motor, obtained by the design of control circuit to control the work of each solenoid valve
Stroke sensor signal is taken, obtains pressure sensor signal, and signal interaction is carried out with the other electronic control modules of vehicle or network
It transmits.
The ECU and each solenoid valve, each pressure sensor, pedal travel sensor, hydraulic pump circuit for controlling motor,
Each control module of vehicle and network signal connection.
On one of the two chambers oil outlet connection of the linear normally close valve and master cylinder pipeline, setting
Circuit check valve, the conducting direction of the circuit check valve are the oil outlets from linear normally close valve to master cylinder.
The circuit check valve is arranged on the pipeline between the linear normally close valve and isolating valve,.
Circuit pressure sensors are set on pipeline between the linear normally close valve and circuit check valve.
High pressure is arranged on the intersecting pipes road of the high pressure accumulator, motor-pump pressure charging system and linear normally close valve to store
It can device pressure sensor.
On the pipeline that the two chambers oil outlet of the linear normally close valve and master cylinder connects, each setting one is returned
Road check valve, the conducting direction of the circuit check valve are the oil outlets from linear normally close valve to master cylinder.
The circuit check valve is arranged on the pipeline between the linear normally close valve and isolating valve,.
On the pipeline that the two chambers oil outlet of the linear normally close valve and master cylinder connects, it is respectively set one
Circuit check valve and a circuit switching valve；The conducting direction of the circuit check valve is from linear normally close valve to isolating valve,.
The circuit check valve and circuit switching valve is separately positioned between the linear normally close valve and isolating valve,
On pipeline.
The circuit switching valve is normally closed solenoid valve.
On the pipeline that the two chambers oil outlet of the linear normally close valve and master cylinder connects, each setting one is returned
Path switch valve.
The circuit switching valve is separately positioned on the pipeline between the linear normally close valve and isolating valve,.
The circuit switching valve is normally closed solenoid valve.
The circuit switching valve is set between two circuits after two circuits of master cylinder have passed through isolating valve,.
The check valve is arranged in the other side of two isolating valve,s；One end of the check valve is connected to oil can；One
The other end of check valve be connected to isolating valve, and pipeline supercharging valve, between, conducting direction be by isolating valve, and pipeline supercharging valve, it
Between one-way conduction to oil can；The other end of another check valve is connected between isolating valve, and pipeline supercharging valve, and conducting direction is
By one-way conduction between isolating valve, and pipeline supercharging valve to oil can.
One pressure sensor is set between the master cylinder and isolating valve,.
The master cylinder oil can uses the form of three cell structures；Wherein, the Ith Room and a decompression in four wheel drags
Valve drain line connects, and the IIth Room is connect with the another dropping valve drain line in four wheel drags, the IIIth Room and motor-
Pump the inlet line connection of pressure charging system.
The utility model additionally provides the control method of the line control brake system of above-described decoupling, technical solution
It is：
For the master cylinder when system is not powered on control, there is no the logical oil return lines for being conducted to oil can direction, are being
When system does automatic emergency brake and power-off suddenly occurs, the brake-pipe pressure of the built standing of automatic emergency brake will not disappear,
Vehicle can be still allowed to allow vehicle braking with established severity of braking；
The master cylinder is when system is not powered on control, there is no the logical oil return line for being conducted to oil can direction, this
When system does automatic emergency brake, isolating valve, occur leakage failure or valve is out of control can not close when, can still complete automatic
Emergency braking；
For the master cylinder when system is not powered on control, there is no the logical oil return lines for being conducted to oil can direction, are driving
When the person of sailing carries out braking realization brake-by-wire, causes driver's fear if there is system cut-off failure and lose correctly braking
Being intended to, including need to ignore to brake pedal top foot, when with stepping on pedal with all strength, remaining unchanged when driver unclamps pedal
It can maintain certain brake-pipe pressure, it is ensured that vehicle secure parking, can re-power makes system be depressured after a stoppage.
For the master cylinder when system is not powered on control, there is no the logical oil return lines for being conducted to oil can direction, are driving
Still certain brake-pipe pressure can be maintained when the person of sailing unclamps pedal, it is ensured that vehicle secure parking；It can weigh after a stoppage
New power on makes system be depressured, if but system re-power still to can not work normally and cause system that can not be depressured, can utilize
It is placed on the release switch between circuit and oil can to release stress to carry out quick manual, vehicle is allowed to restore traveling.
The utility model uses above-mentioned technical proposal, compared with motor drives the configuration scheme of secondary master cylinder, reduces to electricity
The response requirement of machine-pumping system；Motor is reduced with ECU power requirements；Compared to other decoupling scheme of the invention, in the utility model
For master cylinder when system is not powered on control, there is no the logical oil return lines for being conducted to oil can direction, this does automatic emergency in system
When braking and appearance power-off suddenly, the brake-pipe pressure of the built standing of automatic emergency brake will not disappear, and can still allow whole
Vehicle allows vehicle braking with established severity of braking；Under kindred circumstances, isolating valve, occur leakage failure or valve is out of control can not
When closing, this system still can complete automatic emergency brake；The master cylinder is not present when system is not powered on control
It is conducted to the logical oil return line in oil can direction, when driver carries out braking realization brake-by-wire, is drawn if there is system cut-off failure
It has played that driver is panic and has lost correct braking intention and (such as need to ignore to brake pedal top foot, with stepping on all strength
Pedal) when, this system still can maintain certain brake-pipe pressure when driver unclamps pedal, it is ensured that vehicle safe stopping
Vehicle；Can re-power after a stoppage makes system be depressured.
Description of the drawings
Label is briefly described as follows in content and figure shown in attached drawing：
Fig. 1 is the initial configuration schematic diagram of the utility model line control brake system；
Fig. 2 is the configuration schematic diagram that the utility model line control brake system increases a check valve；
Fig. 3 is the configuration schematic diagram that the utility model line control brake system increases by two check valves；
Fig. 4 is to be pressurized output loop in the utility model line control brake system to connect+one switch electromagnetic valve of a check valve
Configuration schematic diagram；
Fig. 5 is the configuration signal for being pressurized output loop in the utility model line control brake system and connecing two switch electromagnetic valves
Figure；
Fig. 6 is the configuration schematic diagram separated by switch electromagnetic valve between two circuits of the utility model line control brake system；
Fig. 7 is that the return check valve of the utility model line control brake system oil can to master cylinder is moved to the structure of isolating valve, lower end
Type schematic diagram；
Fig. 8 is that the return check valve of the utility model line control brake system oil can to master cylinder is moved to brake dropping valve simultaneously
Connection；
Fig. 9 is that the utility model line control brake system exports the loop diagram for increasing by 1 pressure sensor of arrangement in master cylinder chamber；
Figure 10 is that the utility model line control brake system increases time for arranging 1 release switch between circuit and oil can
Lu Tu；
Figure 11 is three chamber of master cylinder oil can and master cylinder inlet line, brake dropping valve of the utility model line control brake system
The schematic diagram of the connection of pressure relief pipe；
Figure 12 is the boost pressure regulation circuit diagram of the utility model line control brake system, is realized in driver's pedal
Brake-by-wire realizes the functions such as AEB, ACC in the non-pedal of driver；
Figure 13 is the active boost regulating loop schematic diagram of the utility model line control brake system, by increasing to 4 wheels are independent
Pressure realizes the functions such as TCS, ESC, this figure, which illustrates that, gives wheel 24 supercharging；
Figure 14 is the ABS reduction regulation circuit diagrams of the utility model line control brake system, by being adjusted to the independent of 4 wheels
Pressure realizes ABS functions, this figure, which illustrates that, gives wheel 24 decompression；
Figure 15 be the utility model line control brake system backup machinery braking mode under circuit diagram, pass through brake master
Cylinder exports fluid by circuit normally open valve direct weighting to four wheel ends, it is established that meets the brake force of regulation；
Figure 16 is a kind of typical case configuration scheme of the utility model line control brake system.
Label in Fig. 1 to Figure 16 be：
01, oil can, 02, oil can go out liquid check valve, 03, oil can go out liquid check valve, 04, master cylinder, 05, pedal sensing control system
Valve, 06, pedal sense simulator PFS, 07, isolating valve, 08, isolating valve, 09, circuit check valve, 09', circuit check valve, 10,
Circuit pressure sensors, 11, linear normally close valve, 12, high pressure accumulator pressure sensor, 13, high pressure accumulator, 14, motor-pump
Pressure charging system, 15, pipeline supercharging valve, 16, pipeline supercharging valve, 17, pipeline supercharging valve, 18, pipeline supercharging valve, 19, pipeline decompression
Valve, 20, pipeline pressure reducing valve, 21, pipeline pressure reducing valve, 22, pipeline pressure reducing valve, 23, pedal travel sensor, 24, vehicle brake,
25, vehicle brake, 26, vehicle brake, 27, vehicle brake, 28, circuit switching valve, 28', circuit switching valve, 29, pressure
Force snesor, 30, release switch, 31, ECU, 041, pedal piston rod；
Figure 17 is the schematic diagram of traditional brake system of car；
Figure 18 is an exemplary construction schematic diagram of the brake-by-wire of decoupling in the prior art.
Specific implementation mode
Below against attached drawing, by the description of the embodiment, making to specific embodiment of the present utility model further detailed
Thin explanation, with help those skilled in the art to the inventive concept of the utility model, technical solution have it is more complete, accurate and
Deep understanding.
One, the overall structure of the utility model：
1, Fig. 1 is the structural schematic diagram of the utility model line traffic control brake fluid system.
2 check valves 02,03, the conducting direction of the check valve are connected between the master cylinder 04 and oil can 01
It is from oil can to master cylinder；Main-cylinder stroke sensor 23 does not limit to the linear transducer using single channel and multichannel, using linear
Displacement sensor, or use angular displacement sensor.
One of the pedal sense simulator PFS06 and 04 chamber of master cylinder are connect, between be connected on pipeline and step on
Plate sense control valve 05；
15,16,17,18 both ends of pipeline supercharging valve, wherein one end connect respectively brake 24 on vehicle, 25,26,
27, the other end connects isolating valve, 07,08 respectively two-by-two；
The pipeline pressure reducing valve 19,20,21,22 is connect with each pipeline supercharging valve 15,16,17,18 respectively, and each decompression
The oil outlet of valve is connected to oil can 01；
The isolating valve, 07,08 is connect with two chambers of master cylinder 04 respectively；
The motor-pump pressure charging system 14, inlet port connect oil can 01, oil outlet connect high pressure accumulator 13 and it is linear often
Valve closing 11；
The linear normally close valve 11 is connected on the fuel-displaced circuit of two chamber of master cylinder, respectively with two isolating valve,s 07,
08 connection, the circuit that the circuit and pipeline supercharging valve 17,18 also formed with pipeline supercharging valve 15,16 forms are connected；
The ECU31 controls the rotating speed of motor by the design of control circuit to control the work of each solenoid valve,
Stroke sensor signal is obtained, obtains pressure sensor signal, and signal friendship is carried out with the other electronic control modules of vehicle or network
Mutually transmit.
2, the specific working mode of the line traffic control brake fluid system of the utility model is as follows：
The master cylinder 04 is transmitted the pedal force of driver's input, pedal travel sensing by pedal piston rod 041
Device 23 is obtaining the braking intention of driver；When driver steps on brake pedal, the brake fluid of 04 intracavitary of master cylinder is pressed
It indents out, ECU controls the opening of solenoid valve 05, isolating valve, 07,08 is closed, and pedal sense simulator PFS06 is exported as master cylinder
Load；The cylinder diameter and stroke that master cylinder 04 is designed by the PV curve fittings that 06 inner cavity of pedal sense simulator loads, to
Obtain the brake pedal feel for meeting operator demand.
The hydraulic oil liquid for meeting repeatedly braking supercharging can be stored in the high pressure accumulator 13, the high pressure accumulator
Filling can be completed by motor-pump pressure charging system 14, and institute's supercharging pressure is monitored by pressure sensor 12 during filling energy, is reached
Stop filling energy after upper limit value；The release of the high pressure accumulator is executed by linear voltage regulation valve 11, according to the input of driver or whole
The input of vehicle intelligent driving, ECU control the electromagnetic force of linear pressure regulator valve 11 to carry out control release to high pressure accumulator pressure, in fact
Now controllable pressure output.The size of output pressure is fed back by the pressure sensor 10 on circuit, Real-time Feedback to ECU,
Electromagnetic force adjustment is carried out to linear voltage regulation valve 11.
The ECU31 can control this system to realize whole at present when interacting signal with the other electronic control modules of vehicle
Each intelligent electric-controlled braking function on vehicle, such as brake-by-wire, anti-lock control ABS, Anti-slip regulation control ASR, electronic stability control
ESC, automatic emergency brake AEB, adaptive learning algorithms ACC and coordination control processed.
The master cylinder 04 is not turned on direction to the pipeline of oil can, can this system occur disconnection fault or
When disconnection fault occurs in vehicle, this system will not cause partial function to fail because of unexpected power-off.Such as during AEB, line traffic control
Braking system can carry out building the next urgent collision avoidance of pressure with prestissimo, but at this time once power-off, which will occur, can be very dangerous, but this is
System can still keep the pressure of built standing in pipeline when power is off, maintain the brake pressure of the built standing of vehicle, it is ensured that whole
Vehicle secure parking in current driving environment.
Two, the concrete analysis of the technical solution of the utility model：
1, loop diagram when Figure 12 is the utility model line control brake system normal work.
After driver's brake pedal, pedal travel has been transmitted to the master cylinder piston of the utility model brake-by-wire scheme
On push rod 041, pedal sensor 23 passes the signal in electronic control unit ECU31, the position that ECU is inputted according to driver
Shifting-time relationship xt, controls the electromagnetic force of linear pressure regulator valve 11 after series of computation, to which the ideal needed for obtaining is braked
Pressure vs time Pt；Reduction regulation is any one or more Lai real in the pressure reducing valve 19,20,21,22 at wheel end by being arranged in
It is existing；At the same time ECU controls the energization of isolating valve, 07,08 and closes, and pedal sense control valve 05, which is powered, to be opened, the system of master cylinder 04
Hydrodynamic exports to pedal sense simulator PFS06 the feel strength set up and meet driver's impression.
2, Figure 13 is the loop diagram of the utility model line control brake system active boost.
Vehicle, can be according to the condition of road surface and driving condition of vehicle, line control brake system when driver does not brake intervention
In ECU31 judge braking requirement or receive braking requirement signal, then to the valve of system, pump control, carry out active increasing
Pressure realizes that TCS is called ASR, Anti-slip regulation control, the control of ESC electronic stabilities, AEB, ACC function.These functions are to brake-by-wire
Demand can be summarized as：It needs to the brake active boost in braking system, and selectivity can be carried out to four wheels
Supercharging.For to 24 active boost of brake therein, the loop diagram of active boost is as shown in figure 13.
When obtaining the braking requirement of active boost, normally closed linear voltage regulation valve 11, which leads to ratio-voltage, controls high pressure accumulator 13
Output pressure P (t) processed, pressure charging valve 16,17,18, which is powered, closes, and isolating valve, 07,08, which is powered, closes, the liquid of high pressure accumulator output
Pressure is on demand pressurized brake 24.
3, loop diagram when Figure 14 is the utility model line control brake system ABS functions.
Vehicle will be likely to enter locking in emergency braking, and the utility model line control brake system has anti-lock work(
Can be ABS.When ECU31 acquires anti-lock demand for control, the pressure charging valve 15,16,17,18 of control system, which is powered, closes, into
Enter ABS packing states, when brake has decompression demand, controls the pressure reducing valve on the brake piping and carry out decompression adjusting control
System.By taking brake 24 as an example, when needing brake 24 to depressurize, then ECU31 controls the energization of the pressure reducing valve 19 on the pipeline and opens,
To realize decompression.As shown in Figure 4.
4, loop diagram when Figure 15 is the mechanical backup braking of the utility model line control brake system.
Line control brake system be it is a kind of rely on normal power supply electric controlled brake system product, system occur power supply trouble or
When person is that vehicle power supply system failure influences this system, it can be likely to result in this system and can not work normally.To consider
The safety of driving, the utility model linear brake system have mechanical backup braking function.According to demand, this system will
Into mechanical backup braking mode.Driver's brake pedal, the compressed output brake fluid of brake fluid in master cylinder 04,
By isolating valve, 07,08 using pressure charging valve 15,16,17,18 to four wheel drags 24,25,26,27, realize that machinery is standby
Part braking.
5, Fig. 6 is that the check valve of the utility model line control brake system is moved to the loop diagram of pressure reducing valve.
Check valve 02,03 in the line control brake system of the utility model, which does not limit to, is positioned over oil can and master cylinder is direct
It is connected, check valve can be positioned over the other positions in circuit, and function quintessence is by the brake fluid one-way conduction of oil can 01 to system
Dynamic master cylinder 04.Fig. 6 be by check valve be moved in pressure reducing valve 19,20,21,22 one of pressure reducing valve 20.The pressure reducing valve is in parallel
One check valve 20-2, when master cylinder 04 needs fluid infusion, the fluid of oil can enters master cylinder by check valve 20-2.
6, Fig. 7 is the loop diagram that the utility model line control brake system uses two circuit check valves；
The linear normally close valve 11 of the line control brake system of the utility model is connected to the fuel-displaced circuit of two chamber of master cylinder
When upper, one circuit check valve 09 and 09' were respectively installed in two circuits of connecting line.In system cut-off, if occur
The failure of certain brake junction, this 2 circuit check valves can detach two circuits, anti-locking system occur entirely without
Braking.
7, Figure 16 is a kind of exemplary application of the utility model line control brake system.
The pressure hydraulic generator of the utility model is reached by motor-pump system, and the utility model does not limit with one
A circuit or multiple circuits are realized, are also not limited in the configuration scheme of the utility model narration and are done Redundancy Design, therefore
Increase number of sensors on the utility model configuration, or the Redundancy Designs such as valve for increasing same type are new in this practicality
In the protection domain of type.
The utility model is exemplarily described above in conjunction with attached drawing, it is clear that the utility model specific implementation not by
The limitation of aforesaid way, as long as using the methodology of the utility model and various unsubstantialities that technical solution carries out change
Into, or it is not improved the design of the utility model and technical solution are directly applied into other occasions, in the utility model
Protection domain within.
Claims (17)
1. a kind of line control brake system of decoupling, including oil can (01), oil can go out liquid check valve (02,03), master cylinder (04),
Pedal sense simulator PFS (06), isolating valve, (07,08), linear normally close valve (11), high pressure accumulator pressure sensor (12),
High pressure accumulator (13), motor-pump pressure charging system (14), pipeline supercharging valve (15,16,17,18), pipeline pressure reducing valve (19,20,
21,22), pedal travel sensor (23) and ECU (31), the ECU (31) be for controlling solenoid valve and motor work, obtaining
Pressure sensor and stroke sensor signal and with vehicle other sensors, electronic control module interactive signal；
It is characterized in that：
A check valve (02,03) is respectively provided on two pipelines between the master cylinder (04) and oil can (01), it is described
The conducting direction of check valve be from oil can (01) to master cylinder (04)；
One of the pedal sense simulator PFS (06) and master cylinder (04) chamber are connect；The pedal sense simulation
Pedal sense control valve (05) is set on the pipeline between device PFS (06) and master cylinder (04) chamber；
Described pipeline supercharging valve (15,16, the 17,18) both ends, wherein one end be separately connected on vehicle brake (24,25,
26、27)；After the other end connects two-by-two, it is then separately connected isolating valve, (07,08) again；
The pipeline pressure reducing valve (19,20,21,22) is connect with each pipeline supercharging valve (15,16,17,18) respectively, and each decompression
The oil outlet of valve is connected to oil can (01)；
The isolating valve, (07,08) is connect with the two chambers of master cylinder (04) respectively；
The inlet port of the motor-pump pressure charging system (14) is connect with oil can (01), oil outlet and the high-voltage energy-storage
Device (13) and linear normally close valve (11) connection；
The linear normally close valve (11) is connected on the fuel-displaced circuit of two chambers of master cylinder (04), respectively with two isolating valve,s
(07,08) it connects, is also connected with the circuit in the circuit of pipeline supercharging valve (15,16) composition and pipeline supercharging valve (17,18) composition；
The ECU (31) and each solenoid valve, each pressure sensor, pedal travel sensor, hydraulic pump circuit for controlling motor,
Each control module of vehicle and network signal connection.
2. the line control brake system of decoupling described in accordance with the claim 1, it is characterised in that：In the linear normally close valve (11)
It one of is connect with the two chambers oil outlet of master cylinder (04) on pipeline, circuit check valve (09), the circuit is set
The conducting direction of check valve (09) is the oil outlet from linear normally close valve (11) to master cylinder (04).
3. the line control brake system decoupled according to claim 2, it is characterised in that：The circuit check valve (09) is set
It sets on the pipeline between the linear normally close valve (11) and isolating valve, (07,08).
4. the line control brake system decoupled according to claim 2, it is characterised in that：In the linear normally close valve (11)
Circuit pressure sensors (10) are set on the pipeline between circuit check valve (09).
5. the line control brake system of decoupling described in accordance with the claim 1, it is characterised in that：In the high pressure accumulator
(13), the intersecting pipes road setting high pressure accumulator pressure sensor of motor-pump pressure charging system (14) and linear normally close valve (11)
(12)。
6. the line control brake system of decoupling described in accordance with the claim 1, it is characterised in that：In the linear normally close valve (11)
On the pipeline being connect with the two chambers oil outlet of master cylinder (04), a circuit check valve (09,09 ') is respectively set, it is described
The conducting direction of circuit check valve (09,09 ') be oil outlet from linear normally close valve (11) to master cylinder (04).
7. the line control brake system decoupled according to claim 6, it is characterised in that：The circuit check valve (09) is set
It sets on the pipeline between the linear normally close valve (11) and isolating valve, (07,08).
8. the line control brake system of decoupling described in accordance with the claim 1, it is characterised in that：In the linear normally close valve (11)
On the pipeline being connect with the two chambers oil outlet of master cylinder (04), a circuit check valve (09) is respectively set and one is returned
Path switch valve (28)；The conducting direction of the circuit check valve (09) is from linear normally close valve (11) to isolating valve,.
9. the line control brake system decoupled according to claim 8, it is characterised in that：The circuit check valve (09) and
Circuit switching valve (28) is separately positioned on the pipeline between the linear normally close valve (11) and isolating valve, (07,08).
10. the line control brake system decoupled according to claim 8, it is characterised in that：The circuit switching valve (28)
For normally closed solenoid valve.
11. the line control brake system of decoupling described in accordance with the claim 1, it is characterised in that：In the linear normally close valve
(11) on the pipeline being connect with the two chambers oil outlet of master cylinder (04), a circuit switching valve (28,28 ') is respectively set.
12. the line control brake system decoupled according to claim 11, it is characterised in that：The circuit switching valve (28,
28 ') it is separately positioned on the pipeline between the linear normally close valve (11) and isolating valve, (07,08).
13. the line control brake system decoupled according to claim 11, it is characterised in that：The circuit switching valve (28,
28 ') it is normally closed solenoid valve.
14. the line control brake system decoupled according to claim 11, it is characterised in that：The circuit switching valve (28)
It is set between two circuits after two circuits of master cylinder have passed through isolating valve, (07,08).
15. the line control brake system of decoupling described in accordance with the claim 1, it is characterised in that：The check valve (02,03) is set
Set the other side in two isolating valve,s (07,08)；One end of the check valve (02,03) is connected to oil can (01)；One unidirectional
The other end of valve (02) is connected between isolating valve, (07) and pipeline supercharging valve (17,18), and conducting direction is by isolating valve, (07)
One-way conduction is to oil can (01) between pipeline supercharging valve (17,18)；The other end of another check valve (03) is connected to partition
Between valve (08) and pipeline supercharging valve (15,16), conducting direction is by single between isolating valve, (08) and pipeline supercharging valve (15,16)
To being conducted to oil can (01).
16. the line control brake system of decoupling described in accordance with the claim 1, it is characterised in that：The master cylinder (04) with
One pressure sensor (29) is set between isolating valve, (07).
17. the line control brake system of decoupling described in accordance with the claim 1, it is characterised in that：The oil can (01) uses three
The form of cell structure；Wherein, the Ith Room is connect with 2 dropping valve drain lines in four wheel drags, the IIth Room with four
Another 2 dropping valve drain lines connection in wheel drag, the IIIth Room and the inlet line of motor-pump pressure charging system (14) connect
It connects.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710839546 | 2017-09-18 | ||
| CN201710839546X | 2017-09-18 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207875615U true CN207875615U (en) | 2018-09-18 |
Family
ID=60551561
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721198958.1U Withdrawn - After Issue CN207875615U (en) | 2017-09-18 | 2017-09-19 | Decoupled brake-by-wire system |
| CN201710845779.0A Active CN107458365B (en) | 2017-09-18 | 2017-09-19 | Decoupled brake-by-wire system and control method thereof |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710845779.0A Active CN107458365B (en) | 2017-09-18 | 2017-09-19 | Decoupled brake-by-wire system and control method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (2) | CN207875615U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107458365A (en) * | 2017-09-18 | 2017-12-12 | 芜湖伯特利电子控制***有限公司 | Decoupled brake-by-wire system and control method thereof |
| CN109591785A (en) * | 2018-11-30 | 2019-04-09 | 三汽车起重机械有限公司 | Automatic driving vehicle brake circuit system and automatic driving vehicle |
| CN114056313A (en) * | 2022-01-17 | 2022-02-18 | 万向钱潮股份有限公司 | Fault diagnosis method for multi-axis commercial vehicle line control brake system |
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| CN107891850A (en) * | 2017-12-18 | 2018-04-10 | 浙江力邦合信智能制动***股份有限公司 | A kind of integrated electric hydraulic brake system with decoupling function |
| CN108001435A (en) * | 2017-12-30 | 2018-05-08 | 芜湖伯特利电子控制***有限公司 | Hydraulic control structure of pressurization module of electronic brake-by-wire system |
| CN108248592A (en) * | 2018-02-06 | 2018-07-06 | 吉林大学 | Electric-machine directly-driven line control brake system and its brake control method with master/slave cylinder |
| CN108407788B (en) * | 2018-02-12 | 2020-03-17 | 浙江亚太机电股份有限公司 | Automobile braking energy recovery system with pedal feel feedback |
| CN108454600B (en) * | 2018-02-12 | 2019-11-15 | 浙江亚太机电股份有限公司 | The control system and method for auto pedal sense feedback based on decoupling braking system |
| CN108536120A (en) * | 2018-03-12 | 2018-09-14 | 天津英创汇智汽车技术有限公司 | New E SP system multimodes cooperate with testboard |
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| CN110116718A (en) * | 2019-04-24 | 2019-08-13 | 芜湖伯特利电子控制***有限公司 | Line traffic control brake fluid system |
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| CN112654538A (en) * | 2020-03-09 | 2021-04-13 | 华为技术有限公司 | Braking system, braking method and automobile |
| CN113442891B (en) * | 2020-03-26 | 2022-12-09 | 比亚迪股份有限公司 | Auxiliary braking device, hydraulic braking system and vehicle |
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| JP2000142369A (en) * | 1998-11-16 | 2000-05-23 | Bosch Braking Systems Co Ltd | Brake system |
| DE102011077329A1 (en) * | 2010-07-23 | 2012-01-26 | Continental Teves Ag & Co. Ohg | Method for controlling an electro-hydraulic brake system and electro-hydraulic brake system |
| KR101359338B1 (en) * | 2012-03-13 | 2014-02-11 | 주식회사 만도 | Integrated Electronic Hydraulic Brake System |
| KR101359341B1 (en) * | 2012-03-13 | 2014-02-11 | 주식회사 만도 | Integrated Electronic Hydraulic Brake System |
| CN104309595B (en) * | 2014-09-28 | 2017-03-15 | 浙江万向精工有限公司 | Hydraulic brake unit |
| CN105799679B (en) * | 2016-04-14 | 2018-07-06 | 芜湖伯特利汽车安全***股份有限公司 | Oil pressure energy assisted braking system and its control method |
| CN206358136U (en) * | 2016-11-25 | 2017-07-28 | 浙江亚太机电股份有限公司 | A kind of integrated form master cylinder |
| CN106891878B (en) * | 2017-01-17 | 2023-05-23 | 吉林大学 | Motor-driven electronic hydraulic brake system with improved master cylinder |
| CN207875615U (en) * | 2017-09-18 | 2018-09-18 | 芜湖伯特利电子控制***有限公司 | Decoupled brake-by-wire system |
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- 2017-09-19 CN CN201721198958.1U patent/CN207875615U/en not_active Withdrawn - After Issue
- 2017-09-19 CN CN201710845779.0A patent/CN107458365B/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107458365A (en) * | 2017-09-18 | 2017-12-12 | 芜湖伯特利电子控制***有限公司 | Decoupled brake-by-wire system and control method thereof |
| CN107458365B (en) * | 2017-09-18 | 2023-09-26 | 芜湖伯特利电子控制***有限公司 | Decoupled brake-by-wire system and control method thereof |
| CN109591785A (en) * | 2018-11-30 | 2019-04-09 | 三汽车起重机械有限公司 | Automatic driving vehicle brake circuit system and automatic driving vehicle |
| CN114056313A (en) * | 2022-01-17 | 2022-02-18 | 万向钱潮股份有限公司 | Fault diagnosis method for multi-axis commercial vehicle line control brake system |
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| CN107458365A (en) | 2017-12-12 |
| CN107458365B (en) | 2023-09-26 |
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Address after: 241009 Taishan Road, Wuhu economic and Technological Development Zone, Wuhu, Anhui, 19 Patentee after: WUHU BETHEL ELECTRONIC CONTROL SYSTEMS Co.,Ltd. Address before: 241009 Wuhu six economic development zone, No. 226, Yin Hu Bei Road, Anhui. Patentee before: WUHU BETHEL ELECTRONIC CONTROL SYSTEMS Co.,Ltd. |
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