CN206406908U - A kind of motor driving EHB for improving master cylinder - Google Patents
A kind of motor driving EHB for improving master cylinder Download PDFInfo
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- CN206406908U CN206406908U CN201720055461.8U CN201720055461U CN206406908U CN 206406908 U CN206406908 U CN 206406908U CN 201720055461 U CN201720055461 U CN 201720055461U CN 206406908 U CN206406908 U CN 206406908U
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- master cylinder
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Abstract
EHB is driven the utility model discloses a kind of motor for improving master cylinder.The system includes actuation unit, mechanical pedal sense simulator, the master cylinder by remodeling, motor power-assisted braking arrangement, electronic control unit ECU, fluid reservoir, magnetic valve, sensor.The work ante-chamber of the master cylinder is connected with pedal push rod, and ante-chamber fluid is pushed into fluid reservoir by normally closed solenoid valve during braking;Its second working chamber is connected with motor power-assisted braking arrangement, simultaneously first, second working chamber after ABS/ESC modules with wheel cylinder Hydraulic coupling, ball screw framework is driven by controlled motor rotation, and then promotes piston movement, the pressure of wheel braking cylinder accurate adjustment to each wheel is realized.It is full decoupled with hydraulic braking system that the utility model realizes brake pedal, coordinates regeneration brake system to make full use of motor braking, to maximize recovery braking energy;Coordinate control regenerative braking force and hydraulic braking force, meet the demand of various different operating modes.
Description
Technical field
The utility model belongs to brake system of car technical field, specifically, is that one kind has motor power brake work(
The EHB of regenerative braking automobile and can be applied to.
Background technology
With the rapid development of economy, people's living standard is gradually stepped up, the recoverable amount of automobile also rapidly increasing.
But energy and environment problem becomes increasingly conspicuous simultaneously, new energy and energy-saving automobile turn into an important directions of development of automobile industry.
New-energy automobile is compared with orthodox car, and main advantage and feature is to provide other power in addition to internal combustion engine
Source, improves fuel economy, while improving discharge performance.And an important way for improving fuel economy is exactly to introduce regeneration
Braking.Regenerative braking refers to the resistance rotated using motor to brake wheel, makes vehicle by motor rotary electrification
Kinetic energy is converted into electric energy.Produced electrical power storage can be used as the power source in running car in battery.And it is traditional
The kinetic energy of vehicle in braking procedure is then converted into heat energy by hydraulic braking by the friction of friction plate, and energy is wasted.So
Braking energy is reclaimed, it is possible to reduce energy loss, improve the fuel economy of vehicle.
It is largely to use vacuum servo in current orthodox car brake fluid system, only relatively small number of automobiles are using electricity
Machine aided dynamic braking (the iBooster brakes of such as Bosch companies, the e-ACT brakes of Nissan Motors companies) etc.
The brake booster of other modes.The brake booster of orthodox car, because brake pedal is not complete with hydraulic braking system
Full decoupling, so largely reducing the recovery of braking energy.Compared to vacuum servo mode, motor power brake system
System, can accurately control brake system hydraulic power, response quickly., can be maximum according to the EHB of full decoupling formula
Change and reclaim braking energy.
EHB (Electro-hydraulic Brake System, abbreviation EHB) is Electronic Control skill
The brakes that art and hydraulic control system are combined.EHB has module degree high, simple and compact for structure, can integrated ABS,
Other automobile miscellaneous functions such as ESC;Be particularly suitable for use in the new-energy automobile with regenerative braking capability, and braking energy can be achieved and returns
Receive the advantages of maximizing.
The EHB of current a variety of configurations is applied to volume production automobile.The ECB EHBs of Toyota companies are most
Hybrid vehicle was applied to early in 2001;Tian He companies of the U.S. (TRW) have developed SCB electro-hydraulic brakes system for 2009
System;The brand-new HAV hev EHBs that Bosch companies in 2012 release.These EHBs are all
Employ pedal simulator, high pressure accumulator, electrodynamic pump and magnetic valve etc..The brake system structure of the type is complicated, and high
The technology of pressure accumulator is simultaneously immature, and security is not high;This external system needs greater number of magnetic valve to coordinate control, controls
Difficulty is high, cost is high.Show that EHB systems also have the space of constantly improve based on factors above.
In addition to above-mentioned orthodox car vacuum booster unit and EHB systems, lived using motor driving master cylinder
The EHB of plug constitutes another braking control system.For example:A kind of " Dual-motors Driving for improving master cylinder
(Application No. 201520159018.6, Publication No. CN205044723U is open for the patent of invention of EHB "
Day is 2016.02.24), although the set system has many advantages, such as, but there are still some shortcomings:The system uses double electricity
Machine drives, and complicated in mechanical structure, bulky, cost are high, and the piston of master cylinder arranges that manufacturing process is difficult in the same direction,
There is irrationality in arrangement.
Therefore, on the premise of braking safety is ensured, more braking energies, and further letter are reclaimed as far as possible
Change the structure of motor energy assisted braking system, reduce cost, reduction work noise, make arrangement more flexible, meet various different vapour
The brakes of car demand is an emphasis and difficult point for current brake system of car technical field.
Utility model content
To overcome above mentioned problem, there is motor power brake function and suitable for regeneration the utility model proposes one kind
A kind of EHB of braking vehicle, and in particular to the motor driving EHB of improvement master cylinder.
On the premise of ensureing braking safety, more braking energies are reclaimed as far as possible, and further simplify motor power brake
The structure of system, reduces cost, reduction work noise, makes arrangement more flexible, meet various different automobiles to brakes need
Ask.
The technical solution of the utility model is described with reference to the drawings as follows:
A kind of motor driving EHB for improving master cylinder, by actuation unit, mechanical pedal sense
Simulator, the master cylinder by remodeling, motor power-assisted braking arrangement, electronic control unit ECU, fluid reservoir, magnetic valve and biography
Sensor is constituted, and the master cylinder 8 by remodeling is made up of master cylinder ante-chamber 11, the first working chamber 14 and the second working chamber 21,
The only one of which oil-out of master cylinder ante-chamber 11, point two-way by normally closed solenoid valve 12 and normally open solenoid valve 13 respectively with fluid reservoir
18 and the hydraulic connecting of the first working chamber of master cylinder 14, the working chamber 21 of the first working chamber 14 and second passes through the first check valve respectively
14 and second check valve 19 and the hydraulic connecting of fluid reservoir 18, the first working chamber 14, the oil-out of the second working chamber 21 are through ABS/ESC
Module 33 is connected with the Hydraulic coupling of wheel cylinder 31, realizes and the pressure of wheel braking cylinder of each wheel is adjusted;
The motor power-assisted braking arrangement includes DC brushless motor 27, ball screw framework, motion adjusting apparatus 24 and
Electric machine controller 26, the ball screw framework is connected with the second chamber piston push rod component, and the DC brushless motor 27 is by electricity
Machine controller 26 is controlled, and output torque controls the second working chamber 21, first through moving the driving ball screw framework of adjusting apparatus 24
The hydraulic coupling of working chamber 14;
The actuation unit is connected through mechanical pedal sense simulator with master cylinder ante-chamber piston push rod component;
The electronic control unit ECU35 is led to ABS/ESC controllers and entire car controller by CAN network
News;
The sensor includes master cylinder pressure sensor 34, brake pedal rotary angle transmitter 2 and four groups of pressure of wheel braking cylinder sensings
Device 32, above-mentioned each device is connected with described electronic control unit ECU35 by electric signal respectively.
In master cylinder ante-chamber 11, the first working chamber 14 and the second working chamber 21 of the master cylinder 8 by remodeling respectively
Equipped with return spring, the working chamber 21 of the first working chamber 14 and second is separated by master cylinder first piston 16, the master
Cylinder ante-chamber 11 is connected by master cylinder ante-chamber piston push rod component with mechanical pedal sense simulator, and second working chamber 21 leads to
The second chamber piston push rod component is crossed to be connected with ball screw framework.
The master cylinder ante-chamber piston push rod component is made up of master cylinder ante-chamber piston 9 and ante-chamber piston push rod 5, second chamber
Piston push rod component is made up of master cylinder second piston 22 and second piston push rod 23.
The mechanical pedal sense simulator simulates spring 6 and pedal simulator piston push rod component group by pedal sense
Into the pedal simulator piston push rod component is made up of pedal simulator piston 4 and pedal push rod 3, the pedal push rod 3 one
End is connected with ante-chamber piston push rod 5, and the other end is hinged with brake pedal 1, and the spring housing in pedal sense simulator is mounted in ante-chamber
On piston push rod (5), during work, pedal push rod 3 drives pedal simulator piston 4 to produce displacement, and pedal simulator piston 4 is pushed
The spring that pedal sense simulation spring 6 is produced in displacement, pedal simulator completes the simulation of pedal sense.Pedal sense imitating shell
The simulating brake pedal 1 of spring 6 is felt.
The actuation unit is made up of brake pedal 1, pedal push rod 3 and pedal support 7, brake pedal 1 and pedal
Support 7 is connected, and pedal support 7 is fixedly connected with the fire wall rear end face on automobile, the input of pedal push rod 3 and brake pedal 1
The ante-chamber piston push rod 5 of connection, output end and master cylinder is mechanically connected.
Described brake pedal rotary angle transmitter 2 is integrally disposed on described brake pedal 1, and described master cylinder pressure is passed
Sense 34 is arranged on master cylinder outlet pipeline, and four groups of Wheel cylinder pressure sensors 32 are respectively arranged in four groups of wheel cylinders 31.
The rotor 25 of DC brushless motor 27 in the motor power-assisted braking arrangement and the motion phase of adjusting apparatus 24
Connection, motion adjusting apparatus 24 is connected with feed screw nut 28, and the two ends of feed screw nut 28 are respectively provided with bearing, feed screw nut 28 and
Leading screw 29 is connected to form ball screw framework by ball 30;One end of leading screw 29 is with the push rod with chute by way of being hinged
Connection;Other end and the connection of the gap of 22 push rod of master cylinder second piston 23, for promoting master cylinder second piston 22 to move along a straight line, institute
It is a pair of pitch wheels to state motion adjusting apparatus 24.
The motor driving EHB that the utility model improves master cylinder has the following advantages that:
1. the utility model proposes have motor power brake function and suitable for regenerative braking automobile electronics liquid
Brakes is pressed, can be worked under the different modes such as motor power brake, active brake and regenerative braking.
2. coordinate the hydraulic regulation unit in ABS, ESC module can be to braked wheel as brake power source using motor
Cylinder pressure carries out accurate adjustment.Brake pedal and hydraulic braking system are full decoupled, can give full play to the regenerative braking of motor
Power, farthest reclaims braking energy;Ensure the good pedal sense of driver simultaneously.
3. the power source that motor is adjusted as main brake pressure so that the pressure oscillation of whole hydraulic braking system
Small, work noise is small, fast response time, the precision height of pressure regulation;And eliminate high pressure accumulator, it is ensured that the reliability of system
And security.
4. the utility model proposes the master cylinder by remodeling, simple and compact for structure, connection and reasonable arrangement, be easily integrated
Change, and be easily achieved in technique.
5. the utility model is advantageously integrated the functions such as ABS, TCS, ESC, even for traditional ABS, TCS, ESC hydraulic pressure system
System need not make any change and the system can be coordinated to use.
6. autonomous driving vehicle requires that vehicle produces braking in the case of no driver pedal power, now the electronics
Control unit ECU receives brake signal and motor is adjusted, and actively produces hydraulic braking force, meets adaptive cruise
(ACC), intelligently auxiliary drives brake request to automatic emergency brake (AEB) etc..
7. keeping mechanically connecting between brake pedal and master cylinder ante-chamber, master cylinder ante-chamber keeps hydraulic pressure with the working chamber of master cylinder first
Connection.When system cut-off fails, driver steps on brake pedal suddenly, and system can also produce certain brake pressure, it is ensured that car
The safety and reliability of brakes.
Brief description of the drawings
Fig. 1 is the structure diagram that a kind of motor for improving master cylinder of the utility model drives EHB.
Label declaration in figure
1-brake pedal;2-brake pedal rotary angle transmitter;3-pedal push rod;
4-pedal simulator piston;5-ante-chamber piston push rod;6-pedal sense simulates spring;
7-pedal support;8-by the master cylinder of remodeling;9-master cylinder ante-chamber piston;
10-master cylinder ante-chamber return spring;11-master cylinder ante-chamber;12-normally closed solenoid valve;
13-normally open solenoid valve;14-the first working chamber;15-the first working chamber return spring;
16-master cylinder first piston;17-the first check valve;18-fluid reservoir;
19-the second check valve;20-the second working chamber return spring;21-the second working chamber;
22-master cylinder second piston;23-the second chamber piston push rod;24-motion adjusting apparatus;
25-rotor;26-electric machine controller;27-DC brushless motor;
28-feed screw nut;29-leading screw;30-ball;
31-wheel cylinder;32-Wheel cylinder pressure sensors;33-ABS/ESC modules;
34-master cylinder pressure sensor;35-electronic control unit ECU;
Embodiment
Connect below and further illustrate particular content of the present utility model and embodiments thereof, this reality with accompanying drawing illustrated embodiment
It is only one in technical solutions of the utility model to apply example, it is impossible to be interpreted as the limit to the utility model protection technique scheme
It is fixed.
The utility model include actuation unit, mechanical pedal sense simulator, the master cylinder 8 by remodeling,
Motor power-assisted braking arrangement, electronic control unit ECU35, fluid reservoir 18, magnetic valve, sensor.
The master cylinder 8 one by remodeling has 3 hydraulic cavities:Master cylinder ante-chamber 11, the first working chamber 14 and second
Working chamber 21.Master cylinder ante-chamber is connected by a normally closed solenoid valve 12 with fluid reservoir 18 all the way, when brakes is started working, electricity
Fluid is pushed into oil storage tank 18 after magnet valve energization is opened;During ante-chamber piston return, magnetic valve remains powered on the work for realizing fluid infusion
With;After end of braking, magnetic valve power-off is in closure state, blocks the hydraulic path of master cylinder ante-chamber and fluid reservoir 18.Before master cylinder
Another road of chamber is connected by a normally open solenoid valve 13 with the first working chamber of master cylinder 14, when brakes is started working, magnetic valve
It is powered and disconnects, blocks the hydraulic path of master cylinder ante-chamber and the first working chamber 14;After end of braking, magnetic valve power-off is opened, main
Cylinder ante-chamber and the first working chamber 14 keep hydraulic connecting, to ensure the security under system cut-off failure conditions.First, second work
The oil return opening for making chamber is connected by a check valve with fluid reservoir 18 respectively, after first, second piston return, is realized to two works
Make the fluid infusion effect of chamber;The oil-out of first, second working chamber after ABS/ESC modules 33 with the hydraulic pressure coupling of wheel cylinder 31
Close, realize and the pressure of wheel braking cylinder of each wheel is adjusted.
Move adjusting apparatus 24 in the motor power-assisted braking arrangement to be made up of a pair of pitch wheels, motion is adjusted
The effect of engagement positions 24 is that the rotary motion of motor is converted into linear motion.
Ball screw framework in the motor power-assisted braking arrangement has auto-lock function, and in motor work, power-off is lost suddenly
In the case of effect, ball screw framework locking prevents it from moving, it is ensured that the security of system operational failure.
The electronic control unit ECU35 receives the signal from each sensor, sentences by certain processing and logic
The braking intention of disconnected driver, and the working condition that automobile is presently in.Then export corresponding control signal and give motor control
The controlled motor of device 26 processed is rotated, and promotes master cylinder second piston 22 to move along a straight line, the brake force to hydraulic system is accurately adjusted
Section and control.The electronic control unit ECU35 is led to ABS/ESC controllers and entire car controller by CAN network
News.
The ABS/ESC modules 33, i.e. anti-lock braking system/electronic stability controlling system module, the braking master
The oil-out of cylinder is connected by fluid pressure line with ABS/ESC modules 33, and each wheel cylinder 31 is being connected to by fluid pressure line, with
Adjust the hydraulic braking force of each wheel cylinder.
The utility model, which is illustrated, below for the utility model system authority realizes motor power brake, regeneration system
The dynamic, course of work of three kinds of different braking patterns of active brake.
Motor power brake pattern:The pattern as the utility model EHB conventional Working mould
Formula, can be used for the orthodox car without regeneration brake system.When driver's brake pedal 1 implements braking, electronics control
The signal of unit ECU35 detection brake pedals rotary angle transmitter 2 processed, so that it is determined that the braking intention of driver.Due to brake pedal 1
It is to mechanically connect with master cylinder ante-chamber, master cylinder ante-chamber can produce certain hydraulic coupling, now electronic control unit ECU35 controls are normally closed
Magnetic valve 12, which is powered, to be opened, and normally open solenoid valve 13, which is powered, to be closed, and master cylinder ante-chamber brake fluid is pushed into fluid reservoir 18.Electronics control simultaneously
Unit ECU35 processed judges driver pedal power size by calculating, and then the motor of controlled motor controller 26 drives ball
The mechanism of 30 leading screw 29 moves along a straight line, and makes the work cavity pressure increase of master cylinder first, second, controls the pressure of master cylinder quick
Accurate dynamics, displacement and the speed for following driver's brake pedal 1.The working chamber of master cylinder first, second is passed through respectively
The magnetic valve for crossing fluid pressure governor is flowed into corresponding wheel cylinder 31, is realized that the braking of wheel cylinder 31 increases decompression, is made
Obtain parking of automobile or deceleration.
Braking mode:The pattern is applied to the new-energy automobile with regeneration brake system.When brake pedal 1 is stepped on
When, electronic control unit ECU35 detects pedal rotary angle transmitter signal, and can be sensed by the electricity in onboard sensor
Device is further detected to the energy storage device of the energy resource system of automobile, when energy storage device allows outside power supply device to be stored up
Can, and when learning that the brake force for only relying on regenerative braking generation is enough to produce desired brake force by calculating, electricity
Sub-control unit ECU35 selects braking mode.Now, brake pedal 1 promotes master cylinder ante-chamber piston 9 to move, normally closed electromagnetism
Valve 12, which is powered, to be opened, and normally open solenoid valve 13, which is powered, to be closed, and master cylinder ante-chamber brake fluid is pushed into fluid reservoir 18, DC brushless motor 27
Do not power, friction catch does not work.When continuing brake pedal 1, electronic control unit ECU35 is calculated and is only relied on regenerative braking
When power can not meet demand, now the powered operation of DC brushless motor 27, promotes master cylinder second piston 22 to produce certain liquid
Pressure, friction catch makes up the deficiency of regenerative braking.When energy storage device does not allow energy storage, electronic control unit ECU35 choosings
Conventional motor power brake pattern is selected, now regenerative braking is not involved in work, is substantially carried out friction catch.
Active brake pattern:The pattern is applied to the autonomous driving vehicle equipped with active brake system.Automobile is in traveling
During, electronic control unit ECU35 by detecting signal to the wheel speed sensors in onboard sensor and distance measuring sensor, and
Handle and judge by ECU, if vehicle has the demand of active brake, select active brake pattern.Under active brake pattern, electricity
Sub-control unit outputs signal to electric machine controller 26, and the control of electric machine controller 26 output torque of DC brushless motor 27 makes braking
First, second working chamber of master cylinder sets up hydraulic coupling, and is complete by the hydraulic regulation Unit selection in ABS/ESC modules 33
Portion's wheel or piece wheel are braked, while passing through the Real-time Feedback signal electron control unit of Wheel cylinder pressure sensors 32
ECU35, ECU wait the pressure for adjusting each wheel cylinder when necessary.In the case where driver is not involved in braking so that vehicle is certainly
It is dynamic to slow down or stop.
In all braking procedures, pedal sense is simulated by mechanical pedal sense simulator all the time.No matter
Under which kind of mode of operation, pedal sense keeps constant.If ABS/ESC is triggered work in braking procedure, now place simultaneously again
In braking mode, then now regenerative braking is automatically exited from.Because brake pedal and hydraulic braking system are full decoupled, drive
Thus member will not feel the discomfort of brake pedal shake during ABS/ESC effects, so as to ensure that under special work post pattern
Driver can also have good pedal sense.
Requirement brakes according to national legislation must take into consideration the generation of failure conditions and some brake components occur
During failure, brakes can also produce the braking of some strength by driver's brake pedal.
Unexpected power-off failure, the ball screw framework with auto-lock function, it is ensured that silk during motor works
Thick stick will not automatic backing, keep master cylinder pressure it is constant.When driver continues brake pedal, it can also continue to as master cylinder increase
Pressure, it is ensured that the braking safety in braking procedure during motor catastrophic failure.When whole EHB power-fail
When, each magnetic valve keeps unlatching and closure state in the power-off state, now master cylinder ante-chamber and the working chamber of master cylinder first
14 hydraulic connectings.When driver's brake pedal, master cylinder ante-chamber hydraulic pressure is pushed into the first working chamber 14, and now master cylinder is produced
Raw certain brake pressure, and brake fluid is delivered to wheel cylinder 31 from master cylinder output by brake piping, so as to produce one
Determine the braking of intensity, stop vehicle, meet national legislation requirement.
Claims (7)
1. a kind of motor driving EHB for improving master cylinder, by actuation unit, mechanical pedal sense mould
Intend device, the master cylinder by remodeling, motor power-assisted braking arrangement, electronic control unit ECU, fluid reservoir, magnetic valve and sensing
Device is constituted, it is characterised in that:
The master cylinder (8) by remodeling is by master cylinder ante-chamber (11), the first working chamber (14) and the second working chamber (21) group
Into master cylinder ante-chamber (11) the only one of which oil-out, point two-way passes through normally closed solenoid valve (12) and normally open solenoid valve (13) point
Not with fluid reservoir (18) and the working chamber of master cylinder first (14) hydraulic connecting, first working chamber (14) and the second working chamber (21)
Respectively by the first check valve (17) and the second check valve (19) and fluid reservoir (18) hydraulic connecting, the first working chamber (14), the
The oil-out of two working chambers (21) is connected through ABS/ESC modules (33) with wheel cylinder (31) Hydraulic coupling, is realized to each car
The pressure of wheel braking cylinder regulation of wheel;
The motor power-assisted braking arrangement include DC brushless motor (27), ball screw framework, motion adjusting apparatus (24) and
Electric machine controller (26), the ball screw framework is connected with the second chamber piston push rod component, the DC brushless motor (27)
Controlled by electric machine controller (26), output torque controls the second working chamber through moving adjusting apparatus (24) driving ball screw framework
(21), the hydraulic coupling of the first working chamber (14);
The actuation unit is connected through mechanical pedal sense simulator with master cylinder ante-chamber piston push rod component;
The electronic control unit ECU35 and ABS/ESC controllers and entire car controller are communicated by CAN network;
The sensor includes master cylinder pressure sensor (34), brake pedal rotary angle transmitter (2) and four groups of pressure of wheel braking cylinder sensings
Device (32), above-mentioned each device is connected with described electronic control unit ECU (35) by electric signal respectively.
2. a kind of motor driving EHB for improving master cylinder according to claim 1, it is characterised in that:
In master cylinder ante-chamber (11), the first working chamber (14) and the second working chamber (21) of the master cylinder (8) by remodeling
Return spring is respectively provided with, first working chamber (14) and the second working chamber (21) are by master cylinder first piston (16) separation
Into, the master cylinder ante-chamber (11) is connected by master cylinder ante-chamber piston push rod component with mechanical pedal sense simulator, and described
Two working chambers (21) are connected by the second chamber piston push rod component with ball screw framework.
3. a kind of motor driving EHB for improving master cylinder according to claim 1 or 2, its feature exists
In:
The master cylinder ante-chamber piston push rod component is made up of master cylinder ante-chamber piston (9) and ante-chamber piston push rod (5), second chamber
Piston push rod component is made up of master cylinder second piston (22) and second piston push rod (23).
4. a kind of motor driving EHB for improving master cylinder according to claim 1, it is characterised in that:
The mechanical pedal sense simulator simulates spring (6) and pedal simulator piston push rod component group by pedal sense
Into the pedal simulator piston push rod component is made up of pedal simulator piston (4) and pedal push rod (3), and the pedal is pushed away
Bar (3) one end is connected with ante-chamber piston push rod (5), and the other end is hinged with brake pedal (1), the spring in pedal sense simulator
It is sleeved on ante-chamber piston push rod (5), during work, pedal push rod (3) drives pedal simulator piston (4) to produce displacement, pedal
The spring that emulator piston (4) is pushed in pedal sense simulation spring (6) generation displacement, pedal simulator completes pedal sense
Simulation.
5. a kind of motor driving EHB for improving master cylinder according to claim 1 or 2, its feature exists
In:
The actuation unit is made up of brake pedal (1), pedal push rod (3) and pedal support (7), brake pedal (1) and
Pedal support (7) is connected, and pedal support (7) is fixedly connected with the fire wall rear end face on automobile, pedal push rod (3) input and
Brake pedal (1) is connected, and the ante-chamber piston push rod (5) of output end and master cylinder is mechanically connected.
6. a kind of motor driving EHB for improving master cylinder according to claim 1 or 2, its feature exists
In:
Described brake pedal rotary angle transmitter (2) is integrally disposed on described brake pedal (1), and described master cylinder pressure is passed
Sensor (34) is arranged on master cylinder outlet pipeline, and four groups of Wheel cylinder pressure sensors (32) are respectively arranged at four groups of wheel cylinders
(31) in.
7. a kind of motor driving EHB for improving master cylinder according to claim 1 or 2, its feature exists
In:
The rotor (25) of DC brushless motor (27) in the motor power-assisted braking arrangement and motion adjusting apparatus (24)
It is connected, motion adjusting apparatus (24) is connected with feed screw nut (28), and the two ends of feed screw nut (28) are respectively provided with bearing, leading screw
Nut (28) is connected to form ball screw framework with leading screw (29) by ball (30);One end of leading screw (29) and pushing away with chute
Bar is connected by way of being hinged;Other end and the connection of master cylinder second piston (22) push rod (23) gap, for promoting master cylinder
Second piston (22) moves along a straight line, and the motion adjusting apparatus (24) is a pair of pitch wheels.
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CN106891878A (en) * | 2017-01-17 | 2017-06-27 | 吉林大学 | A kind of motor for improving master cylinder drives EHB |
CN108189826A (en) * | 2018-02-06 | 2018-06-22 | 吉林大学 | Suitable for the full decoupling formula mechano-electronic energy assisted braking system of Brake energy recovery |
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CN110027521A (en) * | 2018-01-12 | 2019-07-19 | 比亚迪股份有限公司 | The pedal sense simulator of vehicle and vehicle with it |
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CN106891878A (en) * | 2017-01-17 | 2017-06-27 | 吉林大学 | A kind of motor for improving master cylinder drives EHB |
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