CN107458365A - The line control brake system and its control method of a kind of decoupling - Google Patents
The line control brake system and its control method of a kind of decoupling Download PDFInfo
- Publication number
- CN107458365A CN107458365A CN201710845779.0A CN201710845779A CN107458365A CN 107458365 A CN107458365 A CN 107458365A CN 201710845779 A CN201710845779 A CN 201710845779A CN 107458365 A CN107458365 A CN 107458365A
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- Prior art keywords
- valve
- pipeline
- master cylinder
- oil
- brake system
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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
- B60T13/74—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
Abstract
The invention discloses a kind of line control brake system of decoupling, including oil can (01), oil can to 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), electric-motor pump pressure charging system (14), pipeline supercharging valve (15,16,17,18), pipeline pressure-reducing valve (19,20,21,22), PTS (23) and ECU (31).Using above-mentioned technical proposal, compared with the configuration scheme of motor drive pair master cylinder, the response requirement to motor pumping system is reduced；Motor reduces with ECU power requirements；Improve the security performance of system.
Description
Technical field
The invention belongs to the technical field of brake system of car.A kind of more particularly it relates to line traffic control of decoupling
Dynamic system.In addition, the invention further relates to the control method of above-mentioned brakes.
Background technology
The power-assisted of traditional brake system of car is to utilize vacuum or electronic vacuum pump work caused by engine work
Caused vacuum, realize that pressure power-assisted is built in braking in vacuum booster.As shown in figure 17, it is traditional brake system of car, bag
Include vacuum booster 4.Brake pedal 6 is stepped on during operator brake, driving master cylinder 3 passes through automatically controlled pressure regulation unit ABS/
ESC2, brake 1 is carried out to build pressure generation brake fluid pressure；Vacuum booster is needed during this to compare pedal force
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 brakes without vacuum servo is generated increasingly
Big demand.It is mainly reflected in two aspects：When the development of new-energy automobile, such as the development of electric automobile so that vehicle
It is upper not carry out vacuumizing power source-engine to vacuum booster, it is necessary to which that an external electronic vacuum pump, its shortcoming are consumptions
It is obvious with electric energy, noise；Second, the development of active safety braking technology, such as vehicle is in collocation radar wave or vision sensor
After can recognize that expected danger, carry out actively building that compacting is dynamic or brake hard collision avoidance to vehicle.Therefore line control brake system
Technology has obtained some development, and prior art is analyzed below by retrieval Patents documents：
As shown in figure 18, number of patent application is that US20140028084A1 patent document discloses a kind of line traffic control of decoupling
The technical scheme of braking.Scheme configuration sets up out driver's supercharging mechanical module by master cylinder 2, pedal sense simulator 3, by
The drive pair master cylinder of motor 5 realizes line traffic control boost pressure regulation, is distributed in pipeline by 18 magnetic valves, the diverse location in loop is pressed to realize
Power controls and regulation.The patent formula magnetic valve is more, and the very high power of mode demand motor of secondary master cylinder supercharging, right
The operating current requirement of ECU control units is up to hundreds of amperes；When system cut-off occurring in braking procedure, it will lose power-assisted
Function of increasing pressure and pin can be pushed up suddenly；Powered off during AEB, it will lose AEB functions；Go out in isolating valve (23a, 23b)
When now leaking or be out of control, AEB functions can partial loss.It is that configuration scheme requires that design standard is high in brief, configuration scheme peace
Full property is defective.
The content of the invention
The present invention provides a kind of line control brake system of decoupling, the purpose is to：Avoid high power motor, high current ECU；Greatly
Width increases safeguard protection of the system under failure state, it is ensured that system can give play to safe and reliable system under some abnormal conditions
Dynamic performance.
To achieve these goals, the technical scheme taken of the present invention is：
The line control brake system of decoupling provided by the invention, 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 supercharging system
System, pipeline supercharging valve, pipeline pressure-reducing valve, PTS and ECU, described ECU are used to control magnetic valve and motor work
Make, obtain pressure sensor and stroke sensor signal and with vehicle other sensors, electronic control module interactive signal；
A check valve is respectively provided with two pipelines between described master cylinder and oil can, described check valve is led
Logical direction is from oil can to master cylinder；
One of described pedal sense simulator PFS and master cylinder chamber are connected；Described pedal sense simulator PFS
Pedal sense control valve is set on the pipeline between master cylinder chamber；
Described pipeline supercharging valve both ends, wherein one end connect the brake on vehicle respectively；After the other end connects two-by-two,
Then isolating valve, is connected respectively again；
Described pipeline pressure-reducing valve is connected with each pipeline supercharging valve respectively, and the oil-out of each pressure-reducing valve is communicated to oil
Kettle；
Described isolating valve, is connected with the two chambers of master cylinder respectively；
The inlet port of described motor-pump pressure charging system is connected with oil can, its oil-out and described high pressure accumulator and
Linear normally close valve connection；
Described linear normally close valve is connected on the fuel-displaced loop of two chambers of master cylinder, is connected respectively with two isolating valve,s
Connect, also with pipeline supercharging valve group into loop and pipeline supercharging valve, composition loop be connected；
Described ECU, to control the work of each magnetic valve, the rotating speed of controlled motor, is obtained by the design of control circuit
Stroke sensor signal is taken, obtains pressure sensor signal, and electronic control module other with vehicle or network carry out signal interaction
Transmit.
Described ECU and each magnetic valve, each pressure sensor, PTS, hydraulic pump circuit for controlling motor,
Each control module of vehicle and network signal connection.
On one of pipeline that the two chambers oil-out of described linear normally close valve and master cylinder connects, set
Loop check valve, the conducting direction of the loop check valve are the oil-outs from normally closed linear valve to master cylinder.
Described loop check valve is arranged on the pipeline between described linear normally close valve and isolating valve,.
Circuit pressure sensors are set on pipeline between described linear normally close valve and loop check valve.
High pressure is set to store on the intersecting pipeline of described high pressure accumulator, motor-pump pressure charging system and linear normally close valve
Can device pressure sensor.
It is each to set one to return on the pipeline that the two chambers oil-out of described linear normally close valve and master cylinder connects
Road check valve, the conducting direction of described loop check valve are the oil-outs from normally closed linear valve to master cylinder.
Described loop check valve is arranged on the pipeline between described linear normally close valve and isolating valve,.
On the pipeline that the two chambers oil-out of described linear normally close valve and master cylinder connects, one is set respectively
Loop check valve and a circuit switching valve；The conducting direction of described loop check valve is from normally closed linear valve to isolating valve,.
Described loop check valve and circuit switching valve is separately positioned between described linear normally close valve and isolating valve,
On pipeline.
Described circuit switching valve is normally closed solenoid valve.
It is each to set one to return on the pipeline that the two chambers oil-out of described linear normally close valve and master cylinder connects
Path switch valve.
Described circuit switching valve is separately positioned on the pipeline between described linear normally close valve and isolating valve,.
Described circuit switching valve is normally closed solenoid valve.
Described circuit switching valve is arranged between two loops after two loops of master cylinder have passed through isolating valve.
Described check valve is arranged on the opposite side of two isolating valve,s；One end of described 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 described master cylinder and isolating valve,.
Described master cylinder oil can uses the form of three cell structures；Wherein, the Ith Room and the individual decompression in four wheel drags
Valve drain line connects, and the IIth Room is connected with the another dropping valve drain line in four wheel drags, and the IIIth Room and motor-
The inlet line connection of pump.
Present invention also offers the control method of the line control brake system of above-described decoupling, its technical scheme is：
Described master cylinder system be not powered on control when, in the absence of the logical oil return line for being conducted to oil can direction, be
When system does automatic emergency brake and power-off suddenly occurs, the brake-pipe pressure that automatic emergency brake has been set up will not disappear,
Vehicle can be still allowed to allow vehicle to brake with the severity of braking established；
Described master cylinder is when system is not powered on control, in the absence of 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
Brake hard；
Described master cylinder, in the absence of the logical oil return line for being conducted to oil can direction, is being driven when system is not powered on control
When the person of sailing carries out braking and realizes brake-by-wire, if there is system cut-off failure, to cause driver panic and lose correctly braking
Being intended to, including need to ignore to brake pedal top pin, during with stepping on pedal with all strength, being remained unchanged when driver unclamps pedal
Certain brake-pipe pressure can be maintained, it is ensured that vehicle emergency, can re-power is depressured system after a stoppage.
Described master cylinder, in the absence of the logical oil return line for being conducted to oil can direction, is being driven when system is not powered on control
Still certain brake-pipe pressure can be maintained when the person of sailing unclamps pedal, it is ensured that vehicle emergency；It can weigh after a stoppage
Newly upper electricity is depressured system, if but system re-power still can not normal work cause system not to be depressured, can utilize
The release-push between loop and oil can is placed on to carry out quick manual release pressure, allows vehicle to recover traveling.
The present invention uses above-mentioned technical proposal, compared with the configuration scheme of motor drive pair master cylinder, reduces to motor-pump
The response requirement of system；Motor reduces with ECU power requirements；Compared to other decoupling scheme of the invention, the present invention in master cylinder
When system is not powered on control, in the absence of the logical oil return line for being conducted to oil can direction, this does automatic emergency brake in system and gone out
Now during power-off suddenly, the brake-pipe pressure that automatic emergency brake has been set up will not disappear, and can still allow vehicle with built
Vertical severity of braking allows vehicle to brake；Under kindred circumstances, isolating valve, occur leakage failure or valve is out of control can not close when, this
System still can complete automatic emergency brake；Described master cylinder is when system is not powered on control, in the absence of being conducted to oil
The logical oil return line in kettle direction, when driver carries out braking and realizes brake-by-wire, if system cut-off failure occur causes driving
Member is panic and when losing correct braking intention (if desired for being ignored to brake pedal top pin, with step on pedal with all strength),
The system still can maintain certain brake-pipe pressure when driver unclamps pedal, it is ensured that vehicle emergency；Stopping
Can be re-powered after car is depressured system.
Brief description of the drawings
Mark is briefly described as follows in content shown in accompanying drawing and figure：
Fig. 1 is the initial configuration schematic diagram of line control brake system of the present invention；
Fig. 2 is the configuration schematic diagram that line control brake system of the present invention increases a check valve；
Fig. 3 is the configuration schematic diagram that line control brake system of the present invention increases by two check valves；
Fig. 4 is that the structure that output loop connects+one switch electromagnetic valve of a check valve is pressurized in line control brake system of the present invention
Type schematic diagram；
Fig. 5 is that the configuration schematic diagram that output loop connects two switch electromagnetic valves is pressurized in line control brake system of the present invention；
Fig. 6 is the configuration schematic diagram separated by switch electromagnetic valve between two loops of line control brake system of the present invention；
Fig. 7 is that the return check valve of line control brake system oil can to master cylinder of the present invention is moved to the configuration of isolating valve lower end and shown
It is intended to；
Fig. 8 is that the return check valve of line control brake system oil can to master cylinder of the present invention is moved to the parallel connection of brake dropping valve；
Fig. 9 is the loop diagram that line control brake system of the present invention exports increase by 1 pressure sensor of arrangement in master cylinder chamber；
Figure 10 is that line control brake system of the present invention increases the loop for arranging 1 release-push between loop and oil can
Figure；
Figure 11 is the chamber of master cylinder oil can three and master cylinder inlet line, the brake dropping valve pressure release of line control brake system of the present invention
The schematic diagram of the connection of pipeline；
Figure 12 is the boost pressure regulation circuit diagram of line control brake system of the present invention, and line traffic control is realized in driver's pedal
Braking, the functions such as AEB, ACC are realized in the non-pedal of driver；
Figure 13 is the active boost regulating loop schematic diagram of line control brake system of the present invention, by real to 4 wheel independent plenums
The functions such as existing TCS, ESC, this figure, which illustrates that, gives the supercharging of wheel 24；
Figure 14 is the ABS reduction regulation circuit diagrams of line control brake system of the present invention, real by the independent pressure regulation to 4 wheels
Existing ABS functions, this figure, which illustrates that, gives the decompression of wheel 24；
Figure 15 be line control brake system of the present invention backup machinery braking mode under circuit diagram, it is defeated by master cylinder
Go out fluid by loop normally open valve direct weighting to four wheel ends, it is established that meet the brake force of regulation；
Figure 16 is a kind of typical case configuration scheme of line control brake system of the present invention.
Mark in Fig. 1 to Figure 16 for：
01st, 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, loop check valve, 09', loop 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, PTS, 24, vehicle brake,
25th, vehicle brake, 26, vehicle brake, 27, vehicle brake, 28, circuit switching valve, 28', circuit switching valve, 29, pressure
Force snesor, 30, release-push, 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 of the prior art.
Embodiment
Below against accompanying drawing, by the description to embodiment, embodiment of the invention is made further details of
Illustrate, to help those skilled in the art to have more complete, accurate and deep reason to inventive concept of the invention, technical scheme
Solution.
First, general structure of the invention：
1st, Fig. 1 is the structural representation of line traffic control brake fluid system of the present invention.
2 check valves 02,03, the conducting direction of described check valve are connected between described 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 transducer, or using angular displacement sensor.
One of described pedal sense simulator PFS06 and the chamber of master cylinder 04 are connected, between be connected on pipeline and step on
Plate sense control valve 05；
The described both ends of pipeline supercharging valve 15,16,17,18, wherein one end connect respectively brake 24 on vehicle, 25,26,
27, the other end connects isolating valve, 07,08 respectively two-by-two；
Described pipeline pressure-reducing valve 19,20,21,22 is connected with each pipeline supercharging valve 15,16,17,18 respectively, and each decompression
The oil-out of valve is communicated to oil can 01；
Described isolating valve, 07,08 is connected with two chambers of master cylinder 04 respectively；
Described motor-pump pressure charging system 14, its inlet port connect oil can 01, oil-out connect high pressure accumulator 13 and it is linear often
Valve closing 11；
Described linear normally close valve 11 is connected on the fuel-displaced loop of the chamber of master cylinder two, respectively with two isolating valve,s 07,
The loop that 08 connection, the loop also formed with pipeline supercharging valve 15,16 and pipeline supercharging valve 17,18 form is connected；
Described ECU31 is by the design of control circuit, to control the work of each magnetic valve, the rotating speed of controlled motor,
Stroke sensor signal is obtained, obtains pressure sensor signal, and electronic control module other with vehicle or network carry out signal friendship
Mutually transmit.
2nd, the specific works mode of line traffic control brake fluid system of the invention is as follows：
Described 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 the intracavitary of master cylinder 04 is pressed
Indent out, ECU control magnetic valves 05 are opened, isolating valve, 07,08 is closed, and pedal sense simulator PFS06 exports as master cylinder
Load；The PV curve fittings loaded by the inner chamber of pedal sense simulator 06 design the cylinder diameter and stroke of master cylinder 04, so as to
Obtain the brake pedal feel for meeting operator demand.
The hydraulic oil liquid for meeting repeatedly braking supercharging can be stored in described high pressure accumulator 13, the high pressure accumulator
Filling can be completed by motor-pump group part 14, and institute's supercharging pressure compression force snesor 12 monitors during energy is filled, and reaches the upper limit
Stop filling energy after value；The release of the high pressure accumulator is performed by linear voltage regulation valve 11, according to the input of driver or vehicle intelligence
The input that can be driven, ECU control the electromagnetic force of linear pressure regulator valve 11 to be controlled release to high pressure accumulator pressure, and realization can
The pressure output of control.The size of output pressure is fed back by the pressure sensor 10 on loop, and Real-time Feedback is to ECU, to line
Property pressure regulator valve 11 carry out electromagnetic force adjustment.
Described ECU31 can control the system to realize whole at present when interacting signal with the other electronic control modules of vehicle
Each intelligent electric-controlled braking function on car, 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.
Described master cylinder 04 is not turned on direction to the pipeline of oil can, can the system occur disconnection fault or
When disconnection fault occurs in vehicle, the system will not cause partial function to fail because of unexpected power-off.Such as during AEB, line traffic control
Brakes can carry out building the next urgent collision avoidance of pressure with prestissimo, but now once power-off, which will occur, can be very dangerous, but this is
System can still keep the pressure set up in pipeline when power is off, the brake pressure for maintaining vehicle to set up, it is ensured that whole
Car emergency in current driving environment.
2nd, the concrete analysis of technical scheme：
1st, loop diagram when Figure 12 is line control brake system normal work of the present invention.
After driver's brake pedal, pedal travel has been delivered to the master cylinder connecting link of brake-by-wire scheme of the present invention
On 041, pedal sensor 23 is passed the signal in electronic control unit ECU31, ECU according to driver input displacement-when
Between relation xt, the electromagnetic force of linear pressure regulator valve 11 is controlled after series of computation, so as to obtain required preferable brake pressure-
Time relationship Pt；Reduction regulation any one or more is realized by be arranged in the pressure-reducing valve 19,20,21,22 at wheel end；With
ECU controls the energization closing of isolating valve, 07,08 simultaneously for this, and pedal sense control valve 05, which is powered, to be opened, the brake fluid of master cylinder 04
The feel strength for meeting driver's impression is set up in output to pedal sense simulator PFS06.
2nd, Figure 13 is the loop diagram of line control brake system active boost of the present invention.
Vehicle, can be according to the condition of road surface and travel conditions of vehicle, line control brake system when driver does not brake intervention
In ECU31 judge braking requirement or receive braking requirement signal, then the valve to 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：Need to the brake active boost in brakes, and selectivity can be carried out to four wheels
Supercharging.Exemplified by the active boost of brake 24 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 leads to ratio-voltage to be controlled to 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 pressurized to brake 24 on demand.
3rd, loop diagram when Figure 14 is line control brake system ABS functions of the present invention.
Vehicle will be likely to enter locking in brake hard, and line control brake system of the present invention possesses anti-lock function i.e.
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 ABS
Packing state, when brake has decompression demand, the pressure-reducing valve on the brake piping is controlled to carry out decompression adjustment control.With system
Exemplified by dynamic device 24, when needing brake 24 to depressurize, then ECU31 controls the pressure-reducing valve 19 on the pipeline to be powered and opened, so as to real
Now it is depressured.As shown in Figure 4.
4th, loop diagram when Figure 15 is the mechanical backup braking of line control brake system of the present invention.
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
Person be vehicle electric power system fault impact to the system when, can be likely to result in the system can not normal work.For in view of
The security of driving, linear brake system of the present invention possess mechanical backup braking function.According to demand, the system will enter
Mechanical backup braking mode.Driver's brake pedal, the compressed output brake fluid of brake fluid in master cylinder 04, pass through
Isolating valve, 07,08 by pressure charging valve 15,16,17,18 to four wheel drags 24,25,26,27, realizes mechanical backup system again
It is dynamic.
5th, Fig. 6 is that the check valve of line control brake system of the present invention is moved to the loop diagram of pressure-reducing valve.
Check valve 02,03 in the line control brake system of the present invention, which does not limit to, is positioned over oil can and the direct phase of master cylinder
Even, check valve can be positioned over the other positions in loop, and its function quintessence is by the brake fluid one-way conduction of oil can 01 to braking
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 in parallel one
Individual check valve 20-2, when master cylinder 04 needs fluid infusion, the fluid of oil can enters master cylinder by check valve 20-2.
6th, Fig. 7 is loop diagram of the line control brake system of the present invention using two loop check valves；
When the linear normally close valve 11 of the line control brake system of the present invention is connected on the fuel-displaced loop of the chamber of master cylinder two,
One loop check valve 09 and 09' are respectively installed in two loops of connecting line.In system cut-off, if there is certain system
Dynamic device junction failure, this 2 loop check valves can separate two loops, and complete brakeless occurs in anti-locking system.
7th, Figure 16 is a kind of exemplary application of line control brake system of the present invention.
The pressure hydraulic generator of the present invention is reached by motor-pump system, the present invention do not limit with a loop or
It is multiple loops to realize, is also not limited in the configuration scheme that the present invention describes and does Redundancy Design, therefore in the present invention program
Increase number of sensors on configuration, or the Redundancy Design such as valve of increase same type is within the scope of the present invention.
The present invention is exemplarily described above in conjunction with accompanying drawing, it is clear that present invention specific implementation is not by aforesaid way
Limitation, as long as the improvement of the various unsubstantialities of inventive concept and technical scheme of the present invention progress is employed, or without changing
Enter and the design of the present invention and technical scheme are directly applied into other occasions, within protection scope of the present invention.
Claims (10)
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,
21st, 22), PTS (23) and ECU (31), described ECU (31) be used to control magnetic valve and motor to work, obtain
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 with two pipelines between described 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 described pedal sense simulator PFS (06) and master cylinder (04) chamber are connected；Described 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 (15,16,17,18) both ends, wherein one end connect respectively on vehicle brake (24,25,
26、27)；After the other end connects two-by-two, isolating valve, (07,08) is then connected respectively again；
Described pipeline pressure-reducing valve (19,20,21,22) is connected with each pipeline supercharging valve (15,16,17,18) respectively, and each decompression
The oil-out of valve is communicated to oil can (01)；
Two chambers of the described isolating valve, (07,08) respectively with master cylinder (04) are connected；
The inlet port of described motor-pump pressure charging system (14) is connected with oil can (01), its oil-out and described high-voltage energy-storage
Device (13) and linear normally close valve (11) connection；
Described linear normally close valve (11) is connected on the fuel-displaced loop of two chambers of master cylinder (04), respectively with two isolating valve,s
(07,08) connect, be also connected with the loop of pipeline supercharging valve (15,16) composition and the loop of pipeline supercharging valve (17,18) composition；
Described ECU (31) and each magnetic valve, each pressure sensor, PTS, hydraulic pump circuit for controlling motor,
Each control module of vehicle and network signal connection.
2. according to the line control brake system of the decoupling described in claim 1, it is characterised in that：In described linear normally close valve (11)
On the one of pipeline being connected with the two chambers oil-out of master cylinder (04), loop check valve (09), the loop are set
The conducting direction of check valve (09) is the oil-out from normally closed linear valve (11) to master cylinder (04).
3. according to the line control brake system of the decoupling described in claim 2, it is characterised in that：Described loop check valve (09) is set
Put on the pipeline between described linear normally close valve (11) and isolating valve, (07,08).
4. according to the line control brake system of the decoupling described in claim 2, it is characterised in that：In described linear normally close valve (11)
Circuit pressure sensors (10) are set on the pipeline between loop check valve (09).
5. according to the line control brake system of the decoupling described in claim 1, it is characterised in that：In described high pressure accumulator
(13) high pressure accumulator pressure sensor, is set on the intersecting pipeline of motor-pump pressure charging system (14) and linear normally close valve (11)
(12)。
6. according to the line control brake system of the decoupling described in claim 1, it is characterised in that：In described linear normally close valve (11)
On the pipeline being connected with the two chambers oil-out of master cylinder (04), a loop check valve (09,09 ') is respectively set, it is described
The conducting direction of loop check valve (09,09 ') be oil-out from normally closed linear valve (11) to master cylinder (04).
7. according to the line control brake system of the decoupling described in claim 6, it is characterised in that：Described loop check valve (09) is set
Put on the pipeline between described linear normally close valve (11) and isolating valve, (07,08).
8. according to the line control brake system of the decoupling described in claim 1, it is characterised in that：In described linear normally close valve (11)
On the pipeline being connected with the two chambers oil-out of master cylinder (04), a loop check valve (09) and one time are set respectively
Path switch valve (28)；The conducting direction of described loop check valve (09) is from normally closed linear valve (11) to isolating valve,.
9. according to the line control brake system of the decoupling described in claim 8, it is characterised in that：Described loop check valve (09) and
Circuit switching valve (28) is separately positioned on the pipeline between described linear normally close valve (11) and isolating valve, (07,08).
10. according to the line control brake system of the decoupling described in claim 8, it is characterised in that：Described circuit switching valve (28)
For normally closed solenoid valve.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710839546X | 2017-09-18 | ||
| CN201710839546 | 2017-09-18 |
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| 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 |
| CN201721198958.1U Withdrawn - After Issue CN207875615U (en) | 2017-09-18 | 2017-09-19 | A kind of line control brake system of decoupling |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201721198958.1U Withdrawn - After Issue CN207875615U (en) | 2017-09-18 | 2017-09-19 | A kind of line control brake system of decoupling |
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| 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 |
| CN108501921A (en) * | 2018-05-04 | 2018-09-07 | 吉林大学 | A kind of hydraulic pressure line control brake system and its brake control method with double pressure sources |
| CN108501921B (en) * | 2018-05-04 | 2019-04-02 | 吉林大学 | A kind of hydraulic line control brake system and its brake control method with double pressure sources |
| CN108791260B (en) * | 2018-06-08 | 2023-08-11 | 芜湖伯特利电子控制系统有限公司 | Wire control hydraulic braking system utilizing EPB auxiliary redundancy |
| CN108791260A (en) * | 2018-06-08 | 2018-11-13 | 芜湖伯特利电子控制系统有限公司 | A kind of line traffic control brake fluid system assisting redundancy using EPB |
| CN109305151A (en) * | 2018-09-21 | 2019-02-05 | 芜湖伯特利电子控制系统有限公司 | The line traffic control brake fluid system of redundancy EPB auxiliary control |
| CN109305151B (en) * | 2018-09-21 | 2023-09-12 | 芜湖伯特利电子控制系统有限公司 | Redundant EPB auxiliary control's drive-by-wire hydraulic braking system |
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| CN111231911A (en) * | 2020-02-18 | 2020-06-05 | 万向钱潮股份有限公司 | Integrated electric control brake power-assisting system with backup system |
| CN111319592A (en) * | 2020-02-18 | 2020-06-23 | 万向钱潮股份有限公司 | Backup system of integrated electronic control brake power-assisting system |
| WO2021179118A1 (en) * | 2020-03-09 | 2021-09-16 | 华为技术有限公司 | Brake system, brake method and vehicle |
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| CN107458365B (en) | 2023-09-26 |
| CN207875615U (en) | 2018-09-18 |
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Address after: 241009 Taishan Road, Wuhu economic and Technological Development Zone, Wuhu, Anhui, 19 Applicant after: WUHU BETHEL ELECTRONIC CONTROL SYSTEMS Co.,Ltd. Address before: 241009 Wuhu six economic development zone, No. 226, Yin Hu Bei Road, Anhui. Applicant before: WUHU BETHEL ELECTRONIC CONTROL SYSTEMS Co.,Ltd. |
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