CN206317814U - A kind of electric control hydraulic braking system - Google Patents
A kind of electric control hydraulic braking system Download PDFInfo
- Publication number
- CN206317814U CN206317814U CN201621242004.1U CN201621242004U CN206317814U CN 206317814 U CN206317814 U CN 206317814U CN 201621242004 U CN201621242004 U CN 201621242004U CN 206317814 U CN206317814 U CN 206317814U
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- master cylinder
- braking
- pedal
- unit
- control unit
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Abstract
The utility model discloses a kind of electric control hydraulic braking system, including pedal simulator, electronic control unit, electronic action unit, mechanism unit, abs braking control unit and wheel braking unit, it is connected with each other between pedal simulator, mechanism unit, abs braking control unit and wheel braking unit by fluid pressure line, data are carried out between electronic control unit and electronic action unit by Electrical signal lines to dock and signal transmission, abs braking control unit lower end is connected with wheel braking unit；Its mechanism unit of the utility model can realize the twocouese control for increasing and decreasing master cylinder pressure in the case where motor is nonreversible, reduce time loss caused by motor reversal, reduce the braking response time and higher control accuracy can be obtained, the volume of brake apparatus can be effectively reduced and production cost is reduced, simultaneously in the presence of pedal master cylinder spring and one-way throttle valve, it is possible to achieve preferable pedal sense simulation.
Description
Technical field
The utility model is related to the technical field of brake system of car, more particularly to a kind of electric control hydraulic braking system.
Background technology
Traditional brake system of car can be divided into muscular energy braking sytem, non-muscular energy braking system and servo brake system etc., but
With the development of ev industry, there is braking response slowly in the brakes in existing automotive field, braking pressure control essence
The more low technical problem of degree, it is impossible to meet the high braking ability requirement of electric automobile, relative to traditional brake fluid system, electricity
Brake fluid system is controlled because using electric signal control, so its control for brake is relatively simple, braking response is rapid, and braking essence
Degree is also relatively easy to control, can be good at meeting braking ability requirement in an emergency braking situation, as electric automobile is produced
The development of industry, electric control hydraulic braking system also has higher future prospect.
Electronically controlled hydraulic system is main by the part such as electronic brake pedal module, hydraulic control unit, electronic control unit group
Into, required brake fluid pressure is no longer produced by the pedal force driving master cylinder of driver in wheel wheel cylinder, but by electronics control
Unit processed produces electric signal to drive whole hydraulic control system, and its outstanding advantages is that the brake pressure of wheel each wheel cylinder can be with
Independently accurately it is adjusted, and the electronically controlled hydraulic system of main flow is to use electronic control unit, i.e. ECU control hydraulic systems
Interior magnetic valve realizes the supercharging and decompression of each wheel wheel cylinder, and it is primary disadvantage is that need additional brake motor and motor
Pump, considerably increases the volume of arrestment mechanism；And braking increases the main opening control realization by magnetic valve of Decompression Controlling, and to electricity
The opening control algolithm of magnet valve is complicated, it is more difficult to realize, and needs high performance magnetic valve, and its cost is higher；It is another existing
Electric control hydraulic braking system is the rotating by controlled motor, realizes that the increase and decrease to master cylinder is voltage-controlled by mechanical structure
System, it has the disadvantage that electric motor starting has lag time, and the rotating switching required time is longer, it is impossible to when meeting braking response
Between requirement.
The content of the invention
The purpose of this utility model is to solve the problems of above-mentioned existing electric control hydraulic braking system, and provides one
Electric control hydraulic braking system is planted, the purpose is to realize electric control hydraulic braking without using motor pump installation, to reduce brake apparatus
Volume, braking motor remains not commutation work, to improve braking response speed, reduces cost and can reach higher braking
Performance.
The utility model includes pedal simulator, electronic control unit, electronic action unit, mechanism unit, ABS systems
Dynamic control unit and wheel braking unit, pedal simulator, mechanism unit, abs braking control unit and wheel braking list
It is connected with each other between member by fluid pressure line, data is carried out by Electrical signal lines between electronic control unit and electronic action unit
Docking and signal transmission, abs braking control unit lower end is connected with wheel braking unit；
The pedal simulator includes brake pedal, pedal master cylinder, hydraulic circuit and pedal sensor, and brake pedal passes through
Piston rod is connected on pedal master cylinder, is sequentially connected with a normally closed solenoid valve between pedal master cylinder and fuel tank since pedal master cylinder
With an one-way throttle valve, pedal sensor is fixedly installed on pedal master cylinder, and the pedal sensor is displacement transducer；
There is ECU modules in described electronic control unit；
There are three magnetic valves, two electromagnetic clutch and two pressure sensors, three in the electronic action unit
Magnetic valve is respectively a normally open solenoid valve and the first normally closed solenoid valve and the second normally closed solenoid valve, two electromagnetic clutch difference
For the first electromagnetic clutch and the second electromagnetic clutch, two pressure sensors are respectively first pressure sensor and second pressure
Sensor, normally open solenoid valve be located between pedal master cylinder and I chamber of master cylinder, the first normally closed solenoid valve be located at pedal master cylinder with
Between one-way throttle valve, the second normally closed solenoid valve is located between I chamber of master cylinder and fuel tank, the first described electromagnetic clutch
It is separately positioned on the second electromagnetic clutch on motor shaft, one end of the first electromagnetic clutch and the motor shaft phase of braking motor
Even, the other end is connected with the first free gear, and one end of the second electromagnetic clutch is connected with the motor shaft of braking motor, the other end
It is connected with the second free gear；
The first pressure sensor and second pressure sensor are located at II, III chamber and abs braking of master cylinder respectively
Between control unit；
The mechanism unit have braking motor, the first free gear, the second free gear, the first rackwork,
Second rackwork and master cylinder, the first free gear, the second free gear are respectively by bearing empty set in braking motor
On motor shaft, the first rackwork, the second rackwork are arranged on both sides above and below the motor shaft of braking motor, the first rack machine
Structure, the second rackwork are connected with master cylinder respectively, and braking motor, the first free gear are mutually nibbled with the first rackwork
Close, the second free gear is meshed with the second rackwork, the master cylinder is hydraulic cylinder with double piston rods, from left to right successively
With I, II, III chamber, wherein II, III chamber lower end is connected with abs braking control unit, between master cylinder II, III chamber and fuel tank
It is connected to the first check valve and the second check valve.
Operation principle and process of the present utility model：
When driver steps on brake pedal, by the pedal sensor on pedal master cylinder, driver is stepped on into pedal
Strength signal feeds back to ECU ECU modules, and ECU modules are by the target pressure value needed for being braked after signal transacting, together
When send corresponding control signal to the first electromagnetic clutch and the second electromagnetic clutch, by the first electromagnetic clutch and the
The closing time control of two electromagnetic clutch, is realized to control of the corresponding gear with motor shaft rotation time, due to first
Rackwork and the second rackwork are to be arranged above and below symmetrical braking motor axle, and the feelings of same steering can be kept in braking motor
Under condition, by rack pinion, realize that the direction of the first rackwork and the second rackwork or so two is moved, due to the first tooth
Bar mechanism and the second rackwork are arranged on the piston rod of master cylinder left and right ends, therefore the brake force that can produce motor is passed
The piston rod of master cylinder is passed, the control to hydraulic cylinder piston rod displacement is further realized, due to master cylinder inner carrier
It is mobile, change master cylinder II, III chamber internal volume, so that master cylinder II, III chamber obtain the pressure value met needed for braking,
Master cylinder II, the connected first pressure sensor in III chamber lower end and second pressure sensor can be by the real-time of II, III chamber simultaneously
Pressure value, electronic control unit ECU modules are fed back to by Electrical signal lines, so that ECU modules are to II, III chamber real-time pressure value
Change to adjust, to improve the control accuracy of brake pressure.
The beneficial effects of the utility model：
Its mechanism unit of the utility model can be realized to increase and decrease master cylinder in the case where motor is nonreversible and pressed
Twocouese control, reduce time loss caused by motor reversal, the braking response time is reduced and can be obtained higher control
Precision processed, due to eliminating the motor pump configuration in main flow electric control hydraulic braking system, can effectively reduce the body of brake apparatus
Accumulate and reduce production cost, while in the presence of pedal master cylinder spring and one-way throttle valve, it is possible to achieve preferable pedal sense
Feel simulation, obtain more preferable driving experience；Simultaneously in the case of brakes power-off failure, three magnetic valves can power off multiple
Position, pedal master cylinder is connected with the chamber of master cylinder I, and the pedal force that driver steps on pedal generation can be effectively passed to master cylinder
On I chamber piston rod, brake hard can be realized by driver's foot pedal, it is ensured that stabilization of the brakes in Emergency time
Property, coordinate abs braking control unit to complete the function that the brakes such as abs braking possess.
Brief description of the drawings
Fig. 1 is the schematic diagram of structure of the present utility model.
Fig. 2 is the schematic perspective view of the utility model mechanism unit.
Fig. 3 is the boost-up circuit schematic diagram of the utility model conventional brake.
Fig. 4 is the pressure reducing circuit schematic diagram of the utility model conventional brake.
Boost-up circuit schematic diagram when Fig. 5 is the utility model power-off failure.
Pressure reducing circuit schematic diagram when Fig. 6 is the utility model power-off failure.
Embodiment
Refer to shown in Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5 and Fig. 6, the utility model includes pedal simulator 1, Electronic Control
Unit 2, electronic action unit 3, mechanism unit 4, abs braking control unit 5 and wheel braking unit 6, pedal simulator
1st, it is connected with each other between mechanism unit 4, abs braking control unit 5 and wheel braking unit 6 by fluid pressure line, electronics control
Data are carried out between unit 2 processed and electronic action unit 3 by Electrical signal lines to dock and signal transmission, abs braking control is single
First 5 lower ends are connected with wheel braking unit 6；
The pedal simulator 1 includes brake pedal 11, pedal master cylinder 12, hydraulic circuit and pedal sensor 14, braking
Pedal 11 is connected on pedal master cylinder 12 by piston rod, is connected successively since pedal master cylinder 12 between pedal master cylinder 12 and fuel tank
There are a normally closed solenoid valve 32 and an one-way throttle valve 13, pedal sensor 14 is fixedly installed on pedal master cylinder 12, described to step on
Plate sensor 14 is displacement transducer；
There is ECU modules 21 in described electronic control unit 2；
There are three magnetic valves, two electromagnetic clutch and two pressure sensors, three in the electronic action unit 3
Magnetic valve is respectively a normally closed solenoid valve 32 of normally open solenoid valve 31 and first and the second normally closed solenoid valve 33, two electromagnetic clutch
Device is respectively the first electromagnetic clutch 34 and the second electromagnetic clutch 35, and two pressure sensors are respectively first pressure sensor
36 and second pressure sensor 37, normally open solenoid valve 31 is located between pedal master cylinder 12 and I chamber of master cylinder 46, and first is normally closed
Magnetic valve 32 is located between pedal master cylinder 12 and one-way throttle valve 13, and the second normally closed solenoid valve 33 is located at I chamber of master cylinder 46
Between fuel tank, described the first electromagnetic clutch 34 and the second electromagnetic clutch 35 is separately positioned on motor shaft, the first electricity
One end of magnet clutch 34 is connected with the motor shaft of braking motor 41, and the other end is connected with the first free gear 42, the second electromagnetism
One end of clutch 35 is connected with the motor shaft of braking motor 41, and the other end is connected with the second free gear 43；
The first pressure sensor 36 and second pressure sensor 37 respectively positioned at master cylinder 46 II, III chamber with
Between abs braking control unit 5；
The mechanism unit 4 has braking motor 41, the first free gear 42, the second free gear 43, the first tooth
Bar mechanism 44, the second rackwork 45 and master cylinder 46, the first free gear 42, the second free gear 43 pass through bearing respectively
Empty set is on the motor shaft of braking motor 41, and the first rackwork 44, the second rackwork 45 are arranged on the electricity of braking motor 41
Both sides above and below arbor, the first rackwork 44, the second rackwork 45 are connected with master cylinder 46 respectively, braking motor 41,
First free gear 42 is meshed with the first rackwork 44, and the second free gear 43 is meshed with the second rackwork 45, institute
Master cylinder 46 is stated for hydraulic cylinder with double piston rods, there is I, II, III chamber successively from left to right, wherein II, III chamber lower end and ABS systems
Dynamic control unit 5 is connected, and the first check valve 47 and the second check valve are connected between master cylinder II, III chamber and fuel tank
48。
Operation principle and process of the present utility model：
Refer to shown in Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5 and Fig. 6, when driver steps on brake pedal 11, pass through pedal
Pedal sensor 14 on master cylinder, the strength signal that driver is stepped on into pedal feeds back to ECU ECU modules 21, ECU moulds
Target pressure value needed for being braked after signal transacting is simultaneously emitted by corresponding control signal to the first electromagnetic clutch by block
34 and second electromagnetic clutch 35, controlled by the closing time to the first electromagnetic clutch 34 and the second electromagnetic clutch 35,
Realize to control of the corresponding gear with motor shaft rotation time, because the first rackwork 44 and the second rackwork 45 are
Arranged above and below symmetrical braking motor axle, can be real in the case where braking motor keeps same steering, by rack pinion
Existing first rackwork 44 and the motion of the direction of the second rackwork 45 or so two, due to the first rackwork 44 and the second rack machine
Structure 45 is arranged on the left and right ends piston rod of master cylinder 46, therefore the brake force that motor is produced can be passed into master cylinder 46
Piston rod, further realize control to hydraulic cylinder piston rod displacement, due to the movement of the inner carrier of master cylinder 46, make braking
Master cylinder II, III chamber internal volume change, so that master cylinder II, III chamber obtain the pressure value met needed for braking, while braking master
Cylinder II, the connected first pressure sensor 36 in III chamber lower end and second pressure sensor 37 are understood the real-time pressure value of II, III chamber,
Electronic control unit ECU modules 21 are fed back to by Electrical signal lines, so that ECU modules are to II, III chamber real-time pressure value changes
To adjust, to improve the control accuracy of brake pressure.
Claims (2)
1. a kind of electric control hydraulic braking system, it is characterised in that：Including pedal simulator (1), electronic control unit (2), electronics
Action cell (3), mechanism unit (4), abs braking control unit (5) and wheel braking unit (6), pedal simulator
(1), mechanism unit (4), abs braking control unit (5) with mutually interconnected by fluid pressure line between wheel braking unit (6)
Connect, carrying out data by Electrical signal lines between electronic control unit (2) and electronic action unit (3) docks and signal transmission,
Abs braking control unit (5) lower end is connected with wheel braking unit (6)；
The pedal simulator (1) includes brake pedal (11), pedal master cylinder (12), hydraulic circuit and pedal sensor (14),
Brake pedal (11) is connected on pedal master cylinder (12) by piston rod, and pedal master cylinder (12) is between fuel tank from pedal master cylinder
(12) start to be sequentially connected with a normally closed solenoid valve (32) and an one-way throttle valve (13), pedal sensor (14) is fixedly installed
In pedal master cylinder (12), the pedal sensor (14) is displacement transducer；
There are three magnetic valves, two electromagnetic clutch and two pressure sensors, three electricity in the electronic action unit (3)
Magnet valve is respectively a normally open solenoid valve (31) and the first normally closed solenoid valve (32) and the second normally closed solenoid valve (33), two electromagnetism
Clutch is respectively the first electromagnetic clutch (34) and the second electromagnetic clutch (35), and two pressure sensors are respectively the first pressure
Force snesor (36) and second pressure sensor (37), normally open solenoid valve (31) are located at pedal master cylinder (12) and master cylinder (46)
I chamber between, the first normally closed solenoid valve (32) be located between pedal master cylinder (12) and one-way throttle valve (13), the second normally closed electromagnetism
Valve (33) is located between I chamber of master cylinder (46) and fuel tank, described the first electromagnetic clutch (34) and the second electromagnetic clutch
Device (35) is separately positioned on motor shaft, and one end of the first electromagnetic clutch (34) is connected with the motor shaft of braking motor (41),
The other end is connected with the first free gear (42), one end of the second electromagnetic clutch (35) and the motor shaft phase of braking motor (41)
Even, the other end is connected with the second free gear (43)；
The first pressure sensor (36) and second pressure sensor (37) respectively positioned at master cylinder (46) II, III chamber with
Between abs braking control unit (5)；
The mechanism unit (4) has braking motor (41), the first free gear (42), the second free gear (43), the
One rackwork (44), the second rackwork (45) and master cylinder (46), the first free gear (42), the second free gear
(43) respectively by bearing empty set on the motor shaft of braking motor (41), the first rackwork (44), the second rackwork
(45) both sides above and below the motor shaft of braking motor (41) are arranged on, the first rackwork (44), the second rackwork (45) are respectively
It is connected with master cylinder (46), braking motor (41), the first free gear (42) are meshed with the first rackwork (44), the
Two free gears (43) are meshed with the second rackwork (45), and the master cylinder (46) is hydraulic cylinder with double piston rods, from a left side
There is I, II, III chamber successively to right, wherein II, III chamber lower end is connected with abs braking control unit (5), master cylinder II, III chamber
The first check valve (47) and the second check valve (48) are connected between fuel tank.
2. a kind of electric control hydraulic braking system according to claim 1, it is characterised in that：Described electronic control unit
(2) there is ECU modules (21) in.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621242004.1U CN206317814U (en) | 2016-11-17 | 2016-11-17 | A kind of electric control hydraulic braking system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621242004.1U CN206317814U (en) | 2016-11-17 | 2016-11-17 | A kind of electric control hydraulic braking system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206317814U true CN206317814U (en) | 2017-07-11 |
Family
ID=59264896
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621242004.1U Expired - Fee Related CN206317814U (en) | 2016-11-17 | 2016-11-17 | A kind of electric control hydraulic braking system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206317814U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114148306A (en) * | 2020-09-08 | 2022-03-08 | 蜂巢智能转向系统(江苏)有限公司保定分公司 | Automobile brake system and control method thereof |
-
2016
- 2016-11-17 CN CN201621242004.1U patent/CN206317814U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114148306A (en) * | 2020-09-08 | 2022-03-08 | 蜂巢智能转向系统(江苏)有限公司保定分公司 | Automobile brake system and control method thereof |
| CN114148306B (en) * | 2020-09-08 | 2023-03-10 | 蜂巢智能转向系统(江苏)有限公司 | Automobile brake system and control method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170711 Termination date: 20171117 |