CN207875604U - Electric line control braking system - Google Patents
Electric line control braking system Download PDFInfo
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- CN207875604U CN207875604U CN201721198930.8U CN201721198930U CN207875604U CN 207875604 U CN207875604 U CN 207875604U CN 201721198930 U CN201721198930 U CN 201721198930U CN 207875604 U CN207875604 U CN 207875604U
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Abstract
The utility model discloses a kind of electric line control braking systems, including master cylinder (1), pedal cylinder (2), isolation solenoid valve (3), pedal solenoid valve (4), pedal sense simulator PFS (5), pressure sensor (6), check valve (7,8), motor driver (9), boost electromagnetic valve, vacuum solenoid valve and ECU (22)；Described ECU (22) the control solenoid valves and motor work, obtain pressure sensor and stroke sensor signal and with vehicle other sensors, the ECU (22) of electronic control module interactive signal.Using above-mentioned technical proposal, keep the structure of system more simple, eliminate multiple solenoid valves, and can realize that brake-by-wire institute is functional；Emergency machine braking may be implemented, improve security of system and reliability.
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 electricity
Sub- 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
Make the vacuum generated, realizes that pressure power-assisted is built in braking in vacuum booster.As shown in figure 17, braking is stepped on when driver brakes to step on
Plate 6, driving master cylinder 3 pass through automatically controlled pressure regulation unit 2 (ABS/ESC), carry out building pressure generation brake fluid pressure to brake 1；
It needs vacuum booster 4 to carry out ratio enlargement to pedal force during this, allows driver under suitable pedal sense power
Realize the brake force for meeting vehicle braking requirement.
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 three aspects：
First, the development of new-energy automobile, for example, electric vehicle development so that on vehicle not to vacuum booster into
Row vacuumizes power source --- engine, it is necessary to an external electronic vacuum pump, and the disadvantage is that it is apparent to consume electric energy, noise；
Second is that the development of active safety braking technology, such as vehicle can identify after collocation radar wave or visual sensor
Go out expected danger, vehicle actively build and suppresses dynamic or emergency braking collision avoidance；
Third, demand of the electric vehicle to energy regenerating, electro-hydraulic brake can be maximized carries out energy by regenerative braking
Amount recycling.
From the above, it can be seen that line control brake system technology has obtained certain development.Below by retrieval related patents text
It offers to analyze the prior art：
1, number of patent application is the invention configuration of US2015020520A1：
As shown in figure 18, number of patent application is that the patent document of US2015020520A1 discloses a kind of skill of brake-by-wire
Art scheme.Scheme configuration is set up out by oil can (4), master cylinder unit (24,25,15,16,17,18), pedal sense simulator (3)
Driver's supercharging mechanical module；It drives secondary master cylinder to realize line traffic control boost pressure regulation by motor (5), pipe is distributed in by 14 solenoid valves
Road, circuit different location come realize pressure control and adjust.The patent formula solenoid valve is more, and structure is complex.
2, number of patent application is the invention configuration of US2016304072A1
As shown in figure 19, number of patent application is that the patent document of US2016304072A1 discloses a kind of skill of brake-by-wire
Art scheme.Scheme configuration is driven by three chamber master cylinder units (110), pedal cylinder unit (120), pedal sense simulator (145), motor
Device unit (160,260), wheel end pressure charging valve (301,302,303,304), wheel end pressure reducing valve (311,312,313,314), solution
Coupling isolating valve (330), pedal electrification magnet valve (132), mechanical valve (136) form, and solenoid valve quantity contains 10 in scheme configuration
A solenoid valve and 1 mechanical valve, advantage are solenoid valve negligible amounts.
The security risk when art solutions are braked there is ice face.When ice face is braked, since attachment coefficient is low, it is
System quickly enter ABS states, wheel end brake (401,402,403,404) pressure oil liquid from pressure reducing valve (311,312,313,
314) pressure release is to oil can, and when into ABS pressurizing actions, wheel end brake (401,402,403,404), which is pressurized required liquid measure, to disappear
Consume the fluid of three chamber master cylinder lumens 116, chamber 118.Since the attachment coefficient of ice face is low, braking distance is long, have passed through ABS actions
" pressure release-supercharging " repeatedly after cycle, after liquid-consumed in master cylinder, system can not continue ABS actions, influence to brake
Safety.
In addition, the configuration system of the patent of invention, in positive braking process, system has piston 112 to be kept and push rod 127
It is not directly contacted with, this will cause the control algolithm of the system to complicate, and reliability reduces.
Utility model content
The utility model provides a kind of electric line control braking system, and the purpose is to the innovative designs by hydraulic system, adopt
With the form of linear pressure reducing valve collocation multi-cavity master cylinder, 10 solenoid valves, 1 pressure sensor, 1 set of motor driver are realized
To realize that brake-by-wire institute is functional.
To achieve the goals above, the technical solution that the utility model is taken is：
The electric line control braking system of the utility model, including master cylinder, pedal cylinder, isolation solenoid valve, pedal solenoid valve, step on
Plate sense simulator, pressure sensor, check valve, motor driver, boost electromagnetic valve, vacuum solenoid valve and ECU；Described
ECU controls solenoid valve and motor work, obtain pressure sensor and stroke sensor signal and with vehicle other sensors, electricity
Control the ECU of module interactive signal；
The master cylinder is set there are three chamber, respectively III chamber of I chamber of master cylinder, II chamber of master cylinder and master cylinder, wherein I chamber of master cylinder with
Two boost electromagnetic valve connections, II chamber of master cylinder are connected to another two boost electromagnetic valve, and III chamber of master cylinder is connected to isolation solenoid valve；The
III chamber powers off the high-voltage oil liquid that hour wheel end brake returns to I chamber of master cylinder and II chamber of master cylinder for discharge system suddenly；
The master cylinder is not connected to oil can, and I chamber of master cylinder, II chamber of master cylinder are not connected to oil can mouth T.
The pedal cylinder is equipped with stroke sensor, and the trip sensor is single channel sensor, or is passed for binary channels
Sensor；
The pedal cylinder is connected to isolation solenoid valve and pedal solenoid valve respectively；
The pedal solenoid valve is also connected to the pedal sense simulator；
The motor driver is separately connected two circuits of system, and one is respectively equipped on two circuits unidirectionally
Valve；The motor driver is respectively communicated to II chamber of I chamber of master cylinder and master cylinder again after the two check valves；
The communication direction of the check valve is from motor driver to I chamber of master cylinder；The connection side of the check valve
To being from motor driver to II chamber of master cylinder；
The conducting direction of the check valve is from motor driver to master cylinder；
The boost electromagnetic valve, vacuum solenoid valve are connected to each brake respectively.
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.
I chamber of master cylinder is connected with the chamber IV of pedal cylinder without mechanical structure, is connected using hydraulic pressure transfer；Make the cloth of pedal chamber IV
Setting individually to come out, and pedal cylinder can not be on same axis direction with master cylinder；The chamber of master cylinder III chamber and pedal cylinder
IV is connected without mechanical structure, using hydraulicdriven piping connection.
Pedal cylinder IV realizes that full decoupling, supercharging are executed by motor driver with master cylinder by valve, and decompression is linear by taking turns
Normally close valve executes；
Safety valve is arranged in the electric line control braking system.The rationally Opening pressure of setting safety valve, such as be set as
4MPa, when pedal sense simulator, valve or displacement sensor fail, driver can not step on brake pedal, can not produce
When raw pedal travel signal, emergency machine braking may be implemented in this system, improves security of system.
When driver steps on brake pedal and reaches MPa, even if displacement sensor does not export, it can also will be pressed by safety valve
Power fluid is exported to III chamber of master cylinder, to realize that mechanical backup is pressurized.
The electric line control braking system also sets up check valve, and conducting direction is pedal sense simulator to pedal
Cylinder, when being conducive to driver's pine brake pedal, the pressure oil liquid in pedal sense simulator can be quickly back in pedal cylinder, be carried
Rise driver's pedal sense.
The pedal cylinder is connect with master cylinder by isolation solenoid valve；
Realize that full decoupling, supercharging are executed by motor driver by valve with master cylinder, decompression by take turns linear normally close valve Lai
It executes；
The motor driver is made of driving mechanism, motor, position sensor；
The outlet of the motor driver sets check valve, is connect with oil can mouth T；The conducting direction of check valve is by oil
Pot mouth T is connected to motor driver chamber.
The vacuum solenoid valve respectively connected wheel end brake and oil can mouth T；The vacuum solenoid valve connects respectively
Then wheel end brake and oil can mouth T.
Different wheel end brakes is connect by each vacuum solenoid valve with oil can mouth T-phase respectively；
The check valve replaces with driving cylinder solenoid valve；One of driving cylinder solenoid valve ' by motor driver with
I chamber of master cylinder connects, another driving cylinder solenoid valve ' connect motor driver with II chamber of master cylinder.
The isolation solenoid valve and pedal solenoid valve are replaced using two-bit triplet solenoid valve, to be further reduced this
The solenoid valve quantity of utility model configuration；The two-bit triplet solenoid valve is in the state of being not powered on, by pedal cylinder and master cylinder
III chamber is connected to, and in the state of energization, pedal cylinder is connected to pedal sense simulator.
The vacuum solenoid valve is linear control valve, and decompression is realized by the Linear Control mode of PWM.
The pressure sensor is arranged on the circuit of I chamber of master cylinder, or is set on II chamber of master cylinder；Pass through monitoring one
The pressure in a circuit, to judge pressure state on entire circuit.
In order to improve the higher reliability of system, pedal pressure-sensitive power is monitored in real time in driver's pedal, in pedal cylinder
Pressure sensor is set between pedal electrification magnet valve.
The utility model configuration can utilize motor driver to pass through check valve fluid infusion for T mouthfuls from oil can, by unidirectional
Valve is provided to wheel end brake.
The utility model uses above-mentioned technical proposal, keeps the structure of system more simple, eliminates four solenoid valves, and energy
Realize that brake-by-wire institute is functional；Emergency machine braking may be implemented, improve security of system and reliability.
Description of the drawings
Label is briefly described as follows in content and figure shown in attached drawing：
Fig. 1 is the organigram of the utility model electric line control braking system；
Fig. 2 is that the check valve of the utility model electric line control braking system motor driver outlet is replaced with normally closed electromagnetism
Schematic diagram after valve；
Fig. 3 is that the utility model electric line control braking system isolation solenoid valve is substituted for one two three with pedal solenoid valve
Schematic diagram after three-way electromagnetic valve；
Fig. 4 is schematic diagram when pressure sensor is arranged into another circuit in the utility model electric line control braking system；
Fig. 5 is that the utility model electric line control braking system increases by one pressure sensing of arrangement by pedal sense simulator
The schematic diagram of device；
Fig. 6 be the utility model electronic hydraulic brake system motor driver in oil return opening connection oil can is set in pump chamber
The schematic diagram of mouth (T)；
Fig. 7 is brake-by-wire schematic diagram of the utility model electric line control braking system when driver steps on pedal；
Fig. 8 is that supercharging schematic diagram of the utility model electric line control braking system when driver does not step on pedal (can be real
Existing TCS, ESC, AEB, ACC function)；
Fig. 9 is the ABS pressure holding function schematic diagrames that the utility model electric line control braking system carries out；
Figure 10 is the ABS decompression function schematic diagrames that the utility model electric line control braking system carries out；
Figure 11 is the regenerative braking reduction regulation schematic diagram that the utility model electronic hydraulic brake system carries out；
Figure 12 is the regenerative braking boost pressure regulation schematic diagram that the utility model electronic hydraulic brake system carries out；
Figure 13 is mechanical backup braking schematic diagram after the power-off that the utility model electronic hydraulic brake system carries out；
Figure 14 is that the utility model electronic hydraulic brake system brakes schematic diagram by the backup that safety valve 3' is carried out；
Figure 15 is three chamber master cylinders of the utility model electronic hydraulic brake system in specific arrangement, and III chamber of master cylinder is placed
Among other two chamber, the schematic diagram of this structure；
When Figure 16 is that the utility model electronic hydraulic brake system powers off suddenly in braking process, residual voltage in removal pipeline
Schematic diagram.
Label in Figure 11 to Figure 16 be：
1, master cylinder, 2, pedal cylinder, 3, isolation solenoid valve, 4, pedal solenoid valve, 5, pedal sense simulator, 6, pressure sensing
Device, 7, check valve, 8, check valve, 9, motor driver, 10, boost electromagnetic valve, 11, boost electromagnetic valve, 12, supercharging electromagnetism
Valve, 13, boost electromagnetic valve, 14, vacuum solenoid valve, 15, vacuum solenoid valve, 16, vacuum solenoid valve, 17, vacuum solenoid valve, 18,
Brake, 19, brake, 20, brake, 21, brake, 22, ECU, 23, pressure charging valve check valve, 24, pressure charging valve check valve,
25, pressure charging valve check valve, 26, pressure charging valve check valve, 27, motor driver check valve, 28, two-bit triplet solenoid valve, 29, pressure
Force snesor；
101, I chamber spring of master cylinder, 102, piston after master cylinder, 103, II chamber spring of master cylinder, 104, master cylinder secondary piston, 105, main
III chamber spring of cylinder；
201, stroke sensor, 202, pedal chamber piston；
901, motor driver piston, 902, driving motor, 903, driving motor position sensor.
Figure 17 is the schematic diagram that brake system of car uses vacuum servo in the prior art；
Figure 18 is a kind of organigram of brake-by-wire technical solution in the prior art；
Figure 19 is the organigram of another brake-by-wire technical solution 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：
Fig. 1 is the structural schematic diagram of the utility model line traffic control brake fluid system.
There are three chamber, wherein I chambers of master cylinder to be connected to two boost electromagnetic valves 10, boost electromagnetic valve 11 for master cylinder 1, II chamber of master cylinder
It is connected to another two boost electromagnetic valve 12, boost electromagnetic valve 13, III chamber of master cylinder is connected to isolation solenoid valve 3；Pedal cylinder 2 is equipped with row
Journey sensor 201；Pedal cylinder 2 is connected to isolation solenoid valve 3, is connected to pedal solenoid valve 4；Pedal solenoid valve 4 again with pedal sense
Feel that simulator 5 (PFS) is connected to.
III chamber of master cylinder powers off hour wheel end brake 18, brake 19, brake 20, brake 21 suddenly for discharge system
Back to the high-voltage oil liquid of I chamber of master cylinder and II chamber of master cylinder；III chamber of master cylinder and the chamber V of driver's pedal sense simulator 5 do not have machine
Tool structure is connected, and is connected using hydraulic pressure transfer；This configuration design allows the arrangement of pedal chamber IV individually to come out, pedal cylinder 2
It can not be on same axis direction with master cylinder 1.
III intracavitary of I chamber of master cylinder, II chamber of master cylinder and master cylinder, be respectively equipped with I chamber spring 101 of master cylinder, II chamber spring 103 of master cylinder,
III chamber spring 105 of master cylinder.Between II chamber of I chamber of master cylinder and master cylinder, it is equipped with piston 102 after master cylinder；II chamber of master cylinder and III chamber of master cylinder it
Between, it is equipped with master cylinder secondary piston 104.I chamber spring 101 of master cylinder, II chamber spring 103 of master cylinder, III chamber spring 105 of master cylinder play balance
Effect makes piston be in home position when intracavitary does not have pressure, when pressure change so that piston is by recovery home position
Elastic force.
It is IV chamber in pedal cylinder 2, pedal chamber piston 202 is equipped in IV chamber
Motor driver 9 is separately connected two circuits of system, and 1 check valve 7, unidirectional is respectively equipped on two circuits
Valve 8 is connected to I chamber of master cylinder and II chamber of master cylinder by check valve again；The communication direction of check valve 7 be from motor driver 9 to
I chamber of master cylinder；The communication direction of check valve 8 is from motor driver 9 to II chamber of master cylinder.
Boost electromagnetic valve 10, vacuum solenoid valve 14 are communicated in brake 18, and vacuum solenoid valve 14 is connected to oil can mouth T；Increase
Pressure electromagnetic valve 11, vacuum solenoid valve 15 are communicated in brake 19；Boost electromagnetic valve 12, vacuum solenoid valve 16 are communicated in brake
20；Boost electromagnetic valve 13, vacuum solenoid valve 17 are communicated in brake 21；Vacuum solenoid valve 14, vacuum solenoid valve 15, decompression electromagnetism
Valve 16, vacuum solenoid valve 17 are linear control valve, can realize decompression by the Linear Controls such as PWM mode.
ECU22 is by the design of control circuit, the work for controlling each solenoid valve, controls the rotating speed of motor, obtains row
Journey sensor signal obtains pressure sensor signal, and carries out signal interaction transmission with the other electronic control modules of vehicle or network.
Motor driver 9 is made of driving mechanism 901, motor 902, position sensor 903；In motor driver 9
There is oil return opening, is connect with oil can mouth T；The outlet of motor driver 9 sets check valve 27, is connect with oil can mouth T；Check valve 27
Conducting direction be that motor driver chamber is connected to by oil can mouth T.
The utility model configuration can utilize motor driver 9 to pass through motor driver check valve for T mouthfuls from oil can
27 fluid infusion are provided by check valve 7, check valve 8 to wheel end brake.
Vacuum solenoid valve 14, vacuum solenoid valve 15 respectively connected wheel end brake 18, brake 19 and oil can mouth T；Subtract
Pressure electromagnetic valve 16, vacuum solenoid valve 17 respectively connected wheel end brake 20,21 and oil can mouth T.
Get up compared with prior art, the utility model configuration solenoid valve quantity reduces 2~4.The utility model
Configuration is by taking turns the relief valve at end, i.e. vacuum solenoid valve 14, vacuum solenoid valve 15, vacuum solenoid valve 16, vacuum solenoid valve 17
Linear pressure release design so that the valve of the invention configuration of two solenoid valves comparison US2015020520A1 of motor pressurized cylinder outlet
26a, 26b, which are saved, becomes two common check valves；The utility model configuration by take turns end relief valve (14,15,16,
17) linear pressure release design so that two solenoid valves of motor pressurized cylinder outlet be (the invention configuration of US2015020520A1
Valve 26a, 26b) it saves and becomes 2 common check valves.
The decoupling that the utility model configuration passes through master cylinder chamber so that the isolating valve in I chamber of master cylinder, II chamber of master cylinder to wheel end saves
Remove valve 23a, 23b of the invention configuration of comparison US2015020520A1.The solenoid valve quantity that the utility model uses reduces four
It is a.
On the basis of above-mentioned construction techniques scheme, the utility model also provides following variation：
As shown in Figure 2：
The check valve 7, check valve 8 are replaced with driving cylinder solenoid valve 7', driving cylinder solenoid valve 8'；Driving cylinder solenoid valve
7' is connected to motor driver 9 and I chamber of master cylinder, and driving cylinder solenoid valve 8' is connected to motor driver 9 and II chamber of master cylinder；
As shown in Figure 3：
The isolation solenoid valve 3, pedal solenoid valve 4 are replaced by a two-bit triplet solenoid valve 28；
As shown in Figure 4：
Pressure sensor 6 is positioned on I chamber circuit of master cylinder, can also be positioned on II chamber of master cylinder；It is returned by monitoring one
The pressure on road, to judge pressure state on entire circuit；
As shown in Figure 5：
Increase between pedal chamber and pedal electrification magnet valve and placed pressure sensor 29.
As shown in Figure 6：
There is oil return opening in motor driver 9, is connect with oil can mouth (T).
Pedal cylinder IV realizes that full decoupling, supercharging are executed by motor driver 9 with master cylinder by valve 3, and decompression is by decompression electricity
Magnet valve 16, vacuum solenoid valve 17, vacuum solenoid valve 14, vacuum solenoid valve 15 execute；
Safety valve 3 ' is arranged in system, real when pedal sense simulator 5 (PFS), valve 4 or displacement sensor fail
Existing emergency machine braking, improves security of system.
Two, the concrete analysis of the technical solution of the utility model：
1, Fig. 7 is the loop diagram of the utility model electronic hydraulic brake system brake-by-wire when driver steps on pedal.
In driver's braking requirement, driver steps on pedal, and ECU22 acquires the signal from stroke sensor 201,
The braking requirement of driver is calculated by algorithm；
ECU22 identifies the braking requirement of driver, according to system mode and system from the input driving motor of belt sensor
The positions of 902 work control degree of boost, and driving motor 902 realizes pressure control；
Driver's braking requirement is issued driving motor 902 by ECU22, and the position that is worked by driving motor 902 controls
The operating position of degree of boost, driving motor 902 is obtained by position sensor in motor 903；
The pressure sensor 6 in circuit feeds back current hydraulic state, to carry out the feedback control of system；Pedal solenoid valve 4
It is powered and opens under ECU22 controls, isolation solenoid valve 3 is powered under ECU22 controls and closes, and the fluid that driver treads passes through
Pedal solenoid valve 4 enters pedal sense simulator 5, realizes the pedal sense of driver.
2, active boost loop diagram when Fig. 8 is the utility model electric line control braking system non-pedal.
Vehicle, can be according to the condition of road surface and driving condition of vehicle, electric line control braking when driver does not brake intervention
ECU22 in system judges braking requirement or receives braking requirement signal, then controls the valve of system, pump, is led
TCS (also known as ASR, i.e. Anti-slip regulation are controlled), ESC (electronic stability control), AEB, ACC function are realized in dynamic supercharging.
Demand of the above-mentioned function to brake-by-wire can be summarized as：It needs to the brake active boost in braking system,
And can four wheels be carried out with selective supercharging.
When obtaining the braking requirement of active boost, ECU22 controls the energization of isolation solenoid valve 3 and closes, and controls driving motor
902 work.According to specific road conditions demand, different motor rotation positions is controlled, brake fluid is realized by motor driver 9
Supercharging, is supplied to circuit and brake.
3, loop diagram when Fig. 9 is the utility model electric line control braking system ABS pressurizes.
Vehicle will be likely to enter locking in emergency braking, and the utility model electric line control braking system has antilock
Dead function, that is, ABS.When ECU22 acquires anti-lock demand for control, boost electromagnetic valve 10, the boost electromagnetic valve of control system
11, boost electromagnetic valve 12, boost electromagnetic valve 13, which are powered, closes, into ABS packing states.
4, Figure 10 is the loop diagram of the utility model electric line control braking system ABS pressure releases.
The utility model electric line control braking system can enter ABS after the intervention of ABS pressure holding functions according to vehicle condition demand
Decompression function.Vacuum solenoid valve 14, vacuum solenoid valve 15, vacuum solenoid valve 16, vacuum solenoid valve 17, which are powered, to be opened, brake fluid oil
Liquid enters T mouthfuls of oil can, realizes pressure release.
5, Figure 11 is the regenerative braking reduction regulation schematic diagram that the utility model electronic hydraulic brake system carries out
After driver's brake pedal, decoupling isolation solenoid valve 3 obtains electric the utility model electronic hydraulic brake system
It closes and (PFS) pedal of pedal sense simulator 5 solenoid valve 4 obtains electric opening, the pedal force of driver is directly by pedal sense mould
Quasi- device provides, therefore the variation of pressure of wheel braking cylinder will not have an impact driver's pedal sense.
It after regenerative braking intervention, is designed by algorithm, calculates the hydraulic pressure value needed for four wheel ends and be pressurized；And it is depressured
When carried out by the dropping valve (vacuum solenoid valve 14, vacuum solenoid valve 15, vacuum solenoid valve 16, vacuum solenoid valve 17) at wheel end
Linear voltage regulation, to keep pressure of wheel braking cylinder equal with target pressure value.
6, Figure 12 is the regenerative braking boost pressure regulation schematic diagram that the utility model electronic hydraulic brake system carries out.
The utility model electronic hydraulic brake system is depressured in regenerative braking and then when raw braking moment deficiency, can be into
Enter regenerative braking boost pressure regulation.Ensure that driver's pedal sense is unaffected by decoupling isolating valve 3 and must be electrically turn off, motor-pump increases
Unit, i.e. motor driver 9 is pressed to carry out continuing boost pressure regulation so that regenerative braking moment is continued to decline by hydraulic braking moment
It makes up.
7, Figure 13 is mechanical backup braking schematic diagram after the power-off that the utility model electronic hydraulic brake system carries out.
The utility model electronic hydraulic brake system is in system cut-off failure or other great electric faults cause this to be
When system can not work normally, mechanical backup will be entered and braked.At this point, all valves, which power off, enters normality, driver steps on braking and steps on
Plate, 2 brake fluid of pedal cylinder export to III chamber of master cylinder push master cylinder piston (B, A) movement set up oil pressure export to wheel end brake
Device.
8, Figure 14 is that the utility model electronic hydraulic brake system carries out backup braking schematic diagram by safety valve 3'.
The utility model electronic hydraulic brake system causes to drive in the appearance such as pedal sense simulator or PFS solenoid valves failure
When brake pedal can not be stepped on, can not generate stroke signal by sailing people, safety check valve 3' is opened in the supercharging of pedal cylinder 2, hence into
The mechanical braking of backup.
9, Figure 15 be the utility model electronic hydraulic brake system three chamber master cylinders 1 in specific arrangement, by III chamber of master cylinder
It is positioned among other two chamber, the schematic diagram of structure at this time.
III chamber of master cylinder, which is positioned among other two chamber, can make three chamber master cylinders arrangement compacter.
10, when Figure 16 is that the utility model electronic hydraulic brake system powers off suddenly in braking process, in removal pipeline
The schematic diagram of residual voltage.
The utility model electronic hydraulic brake system powers off suddenly in braking process, and the brake fluid for taking turns end enters three chamber masters
I chamber of master cylinder, II chamber of master cylinder of cylinder push piston A (i.e. piston 102 after master cylinder), piston B (i.e. master cylinder secondary piston 104) towards master
III chamber of cylinder moves, and the pressure of I chamber of master cylinder, II chamber of master cylinder is reduced by the diminution of III chamber of master cylinder, when brake pedal returns to zero-bit,
Chamber IV is connected to oil can, III chamber of master cylinder, I chamber of master cylinder and the complete pressure release of II chamber of master cylinder.
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 (10)
1. electric line control braking system, including master cylinder (1), pedal cylinder (2), isolation solenoid valve (3), pedal solenoid valve (4), pedal
Sense simulator (5), pressure sensor (6), check valve (7,8), motor driver (9), boost electromagnetic valve (10,11,12,
13), vacuum solenoid valve (14,15,16,17) and ECU (22)；ECU (22) the control solenoid valves and motor work, acquisition is pressed
Force snesor and stroke sensor signal and with vehicle other sensors, the ECU (22) of electronic control module interactive signal；
It is characterized in that：
The master cylinder (1) is set there are three chamber, respectively III chamber of I chamber of master cylinder, II chamber of master cylinder and master cylinder, wherein I chamber of master cylinder and two
The connection of a boost electromagnetic valve (10,11), II chamber of master cylinder are connected to another two boost electromagnetic valve (12,13), III chamber of master cylinder be isolated
Solenoid valve (3) is connected to；III chamber of master cylinder powers off hour wheel end brake (18,19,20,21) for discharge system and returns to master cylinder suddenly
The high-voltage oil liquid of I chamber and II chamber of master cylinder；
The pedal cylinder (2) is equipped with stroke sensor (201), and the trip sensor (201) is single channel sensor, Huo Zhewei
Dual channel sensor；
The pedal cylinder (2) is connected to isolation solenoid valve (3) and pedal solenoid valve (4) respectively；
The pedal solenoid valve (4) is also connected to the pedal sense simulator (5)；
The motor driver (9) is separately connected two circuits of system, and a check valve is respectively equipped on two circuits
(7、8)；The motor driver (9) is respectively communicated to II chamber of I chamber of master cylinder and master cylinder again after the two check valves；
The communication direction of the check valve (7) is from motor driver (9) to I chamber of master cylinder；The company of the check valve (8)
Logical direction is from motor driver (9) to II chamber of master cylinder；
The conducting direction of the check valve (7,8) is from motor driver (9) to master cylinder (1)；
The boost electromagnetic valve (10,11,12,13), vacuum solenoid valve (14,15,16,17) are connected to each brake respectively.
2. electric line control braking system described in accordance with the claim 1, it is characterised in that：I chamber of master cylinder uses liquid with pedal cylinder (2)
Pressure transmits connection, so that the arrangement of IV chamber of pedal cylinder (2) is individually come out, pedal cylinder (2) can not be same with master cylinder (1)
On axis direction；The chamber IV of III chamber of master cylinder and pedal cylinder (2) uses hydraulicdriven piping connection.
3. electric line control braking system described in accordance with the claim 1, it is characterised in that：The electric line control braking system is set
Set safety valve (3')；(4') the electric line control braking system also sets up check valve, conducting direction is simulated for pedal sense
Device (5) is to pedal cylinder (2)；The pedal cylinder (2) is connect with master cylinder (1) by isolation solenoid valve (3).
4. electric line control braking system described in accordance with the claim 1, it is characterised in that：
The motor driver (9) is made of driving mechanism (901), motor (902), position sensor (903)；
The outlet of the motor driver (9) sets check valve (27), is connect with oil can mouth (T)；The conducting side of check valve 27
To being to be connected to motor driver chamber by oil can mouth (T).
5. electric line control braking system described in accordance with the claim 1, it is characterised in that：The vacuum solenoid valve (14,
15) different wheel end brakes (18,19) is connected with oil can mouth (T) respectively.
6. electric line control braking system described in accordance with the claim 1, it is characterised in that：The check valve (7,8) replaces with
Driving cylinder solenoid valve (7', 8')；Motor driver (9) is (7') connect by one of driving cylinder solenoid valve with I chamber of master cylinder, separately
Motor driver (9) is (8') connect by one driving cylinder solenoid valve with II chamber of master cylinder.
7. electric line control braking system described in accordance with the claim 1, it is characterised in that：It will using two-bit triplet solenoid valve (28)
The isolation solenoid valve (3) and pedal solenoid valve (4) are replaced, and the two-bit triplet solenoid valve (28) is in the state being not powered on
Under, pedal cylinder (2) is connected to III chamber of master cylinder, in the state of energization, pedal cylinder (2) and pedal sense simulator (5) are connected
It is logical.
8. electric line control braking system described in accordance with the claim 1, it is characterised in that：The vacuum solenoid valve (14,15,
16,17) be linear control valve.
9. electric line control braking system described in accordance with the claim 1, it is characterised in that：Pressure sensor (6) setting
On the circuit of I chamber of master cylinder, or it is set on II chamber of master cylinder.
10. electric line control braking system described in accordance with the claim 1, it is characterised in that：In pedal cylinder and pedal electrification magnet valve
Between setting pressure sensor (29).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721198930.8U CN207875604U (en) | 2017-09-19 | 2017-09-19 | Electric line control braking system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721198930.8U CN207875604U (en) | 2017-09-19 | 2017-09-19 | Electric line control braking system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207875604U true CN207875604U (en) | 2018-09-18 |
Family
ID=63499451
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721198930.8U Active CN207875604U (en) | 2017-09-19 | 2017-09-19 | Electric line control braking system |
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| Country | Link |
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| CN (1) | CN207875604U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107444365A (en) * | 2017-09-19 | 2017-12-08 | 芜湖伯特利电子控制系统有限公司 | A kind of electric line control brakes |
| CN110035937A (en) * | 2016-12-14 | 2019-07-19 | 罗伯特·博世有限公司 | Motor vehicle braking system and method |
| CN113665540A (en) * | 2021-08-31 | 2021-11-19 | 中汽创智科技有限公司 | Brake-by-wire system, control method, storage medium, and terminal |
-
2017
- 2017-09-19 CN CN201721198930.8U patent/CN207875604U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110035937A (en) * | 2016-12-14 | 2019-07-19 | 罗伯特·博世有限公司 | Motor vehicle braking system and method |
| CN110035937B (en) * | 2016-12-14 | 2021-08-31 | 罗伯特·博世有限公司 | Vehicle braking system and method |
| CN107444365A (en) * | 2017-09-19 | 2017-12-08 | 芜湖伯特利电子控制系统有限公司 | A kind of electric line control brakes |
| CN107444365B (en) * | 2017-09-19 | 2023-03-10 | 芜湖伯特利电子控制系统有限公司 | Electronic line control brake system |
| CN113665540A (en) * | 2021-08-31 | 2021-11-19 | 中汽创智科技有限公司 | Brake-by-wire system, control method, storage medium, and terminal |
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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. |