CN107738638A - A kind of composite braking system with brake-by-wire function - Google Patents
A kind of composite braking system with brake-by-wire function Download PDFInfo
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- CN107738638A CN107738638A CN201710840910.4A CN201710840910A CN107738638A CN 107738638 A CN107738638 A CN 107738638A CN 201710840910 A CN201710840910 A CN 201710840910A CN 107738638 A CN107738638 A CN 107738638A
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- 239000002131 composite material Substances 0.000 title claims abstract description 21
- 238000006073 displacement reaction Methods 0.000 claims abstract description 8
- 239000003921 oil Substances 0.000 claims description 19
- 239000012530 fluid Substances 0.000 claims description 18
- 230000008878 coupling Effects 0.000 claims description 14
- 238000010168 coupling process Methods 0.000 claims description 14
- 238000005859 coupling reaction Methods 0.000 claims description 14
- 241000153246 Anteros Species 0.000 claims description 6
- 230000000694 effects Effects 0.000 claims description 5
- 239000010729 system oil Substances 0.000 claims description 4
- 230000005611 electricity Effects 0.000 claims description 3
- 230000001172 regenerating effect Effects 0.000 claims description 2
- 230000001105 regulatory effect Effects 0.000 claims 1
- 230000008859 change Effects 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 239000007788 liquid Substances 0.000 description 4
- 230000002159 abnormal effect Effects 0.000 description 2
- 230000006837 decompression Effects 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000002706 hydrostatic effect Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
- B60T13/10—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release
- B60T13/12—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release the fluid being liquid
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
- B60T13/10—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release
- B60T13/12—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release the fluid being liquid
- B60T13/14—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release the fluid being liquid using accumulators or reservoirs fed by pumps
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- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Regulating Braking Force (AREA)
Abstract
The invention discloses a kind of composite braking system with brake-by-wire function, belong to automobile brake technical field, including brake pedal, brake booster, master cylinder, two-position five-way sliding valve, stroke simulator, hydraulic regulation module (motor, oil pump, high pressure accumulator, two-position two-way solenoid valve, hydraulic cylinder regulator), pedal displacement sensor, pressure sensor and brake monitor.It is characterized in that：It is integrated with two sets of independent hydraulic controls, switched over by two-position five-way sliding valve, the line control brake system (EHB) of hydraulic pressure is produced by motor, pump, magnetic valve and hydraulic cylinder regulator under normal circumstances, tradition machinery brakes is used in the case of the thrashing；Displacement transducer is installed to determine the size of total braking force at brake pedal；Front and back wheel pipeline is provided with pressure sensor, it is ensured that hydraulic regulation module realizes control in real time；Pedal force is fed back by stroke simulator during normal brake application, realizes the decoupling in brakes mechanical structure.
Description
Technical field
The invention belongs to automobile brake technical field, and in particular to a kind of electric automobile with brake-by-wire braking function
Composite braking system.
Background technology
At present, it is the effective way for alleviating energy shortage and problem of environmental pollution to develop the electric automobile using electricity as power source
Footpath, one of electric automobile are noteworthy characterized by：Vehicle energy is converted into electrical power storage by motor in braking procedure to store
In the energy storage devices such as battery, super capacitor, while produce braking moment.But braking moment caused by motor can not meet different systems
Emotionally condition requirement, and electric braking torque can change with speed and battery SOC, therefore general electric automobile all retains the hydraulic pressure of transmission
Brakes.How to coordinate to control two kinds of braking moments to have important to guarantee traffic safety, the raising electric automobile energy rate of recovery
Meaning, it is the basic method for solving the problems, such as composite braking to change Conventional braking systems structure.Two kinds of braking moments in braking procedure
Ideal Distribution mode such as Fig. 2, this requires composite braking system to adjust the size of hydraulic coupling in real time.
There is the patent of larger correlation as follows with the present invention
One, Tsing-Hua University patent CN200910243332.1 discloses a kind of composite braking system, and the invention passes through threeway
Valve realizes the decoupling of pedal force and brake fluid pressure, and two two-position two-way solenoid valves are accessed before ABS/ESP and realize hydraulic regulation.
The deficiency of the system is：Directly from oil storage tank by accumulator magnetic valve to wheel cylinder, 1. the pressure not buffered is adjusted hydraulic pressure
Cylinder so that oil pressure change is fast, and corresponding control electromagnetic valve switch frequency is larger, and control accuracy is not high；2. without effective mistake
Backup mode is imitated, magnetic valve easily fails under speed-sensitive switch, once hydraulic coupling can not be established, traffic safety exists huge hidden
Suffer from.
The safe rich automotive electronics intelligent technology limited patent CN201310576356.5 in two, Yangzhou, is equally integrated with two
Brakes is covered, its line control system, as power source, magnetic valve control is used with the pattern switching of conventional hydraulic using motor
System.The deficiency of the system is：1. the size of total hydraulic coupling can only be adjusted, antero posterior axis hydraulic braking force can not be accurately distributed, this
There is considerable influence to single shaft-driven electric automobile；2. equally exist the brake safe problem of automatically controlled failure.
The content of the invention
In order to solve problem above, it is an object of the invention to provide a kind of accurate effective hydraulic control system, realize
The coordinated allocation of electric automobile electric braking torque and hydraulic braking moment, while good pedal sense is provided, and ensure automatically controlled
Traditional mechanical structure can intervene brakes in good time in the case of thrashing, it is ensured that automobile braking safety.
To achieve the above object, the present invention uses following technical scheme：
A kind of composite braking system with brake-by-wire function, it includes brake pedal, brake booster, braking master
Cylinder, two-position five-way sliding valve, stroke simulator, hydraulic regulation module (motor, oil pump, high pressure accumulator, two-position two-way solenoid valve,
Hydraulic cylinder regulator), pedal displacement sensor, pressure sensor and brake monitor.It is characterized in that it is integrated with two sets of brake fluid
Pressure control system, one is the Conventional braking systems according to pedal force by mechanical structure hydrodynamic force；One is with motor and pump
As power source, the line control brake system of different hydraulic couplings is controlled by electromagnetic valve switch, wherein Conventional braking systems are as line
The failure backup mode of brakes is controlled, ensures brake safe.The switching and interlocking of two kinds of brakes pass through two-position five-way cunning
Valve realizes that the push rod of its valve element couples with hydraulic cylinder regulator piston push rod, while according to the position of valve element in time by stroke mould
Intend device access system, there is provided good pedal sense.
The handover mechanism is two-position five-way sliding valve, and valve element has two positions, in position for the moment, Conventional braking systems master cylinder
Path and the closing of line control brake system oil return line between wheel cylinder；At position two, Conventional braking systems master cylinder is simulated with stroke
Path and line control brake system oil return line path between device.Different and active control, by mechanical structure when brake-by-wire can not
Guarantee traffic safety can be intervened in real time by building pressure Conventional braking systems.
Described hydraulic cylinder regulator quantity is 2, independently adjusts the brake fluid pressure of antero posterior axis；It is divided into each cylinder body
3 chambers and first, second piston；First chamber is that power produces chamber, and the first chamber hydraulic coupling promotes piston to be produced in second and third chamber
Brake fluid pressure is to wheel cylinder；Second hydraulic cavities and the 3rd hydraulic pressure cavity pressure are identical but independent.
First cavity pressure of the hydraulic cylinder regulator produces power resources and passes through motor, oil pump in high pressure accumulator, system
Low pressure fluid in oil storage tank is converted into high-voltage oil liquid to be stored in high pressure accumulator, two regulation cylinder first chambers share one
Cover power source.
The regulation of first cavity pressure of the hydraulic cylinder regulator passes through the speed-sensitive switch realization of two two-position two-way solenoid valves,
In order to realize two-way hydraulic coupling difference, each hydraulic cylinder regulator is respectively provided with two magnetic valves.
Second, third chamber of described hydraulic cylinder regulator, which is built, is pressed with certain idle stroke, to the position of two-position five-way valve
Switching.
Described two-position five-way sliding valve has back-moving spring K1, and hydraulic cylinder regulator has back-moving spring K2, K3.K1~K3 locates all the time
In compressive state, when valve element is in first position with piston, elastic force caused by K1 is F1, and elastic force caused by K2, K3 is F2, and
F2>F1.Coupled between the valve element push rod of two-position five-way sliding valve and hydraulic cylinder regulator piston, without machinery between valve element push rod and valve element
Connection.When hydraulic cylinder regulator first chamber no pressure, two-position five-way sliding valve is in first position under spring force, that is, works as
Tradition machinery brakes can play a role when line control brake system can not build pressure.Establish and press when hydraulic cylinder regulator first chamber
After power, two-position five-way sliding valve is in the second place under K1 effects, while stroke simulator access regenerative braking is felt, line traffic control
Dynamic system provides hydraulic coupling.
Beneficial effects of the present invention are：
1st, the present invention overcomes the defects of existing composite braking system, it is possible to achieve the flexible modulation of antero posterior axis hydraulic braking force
(from 0 to highest) so that brake fluid system and motor braking system can be with co-ordinations；
2nd, for the present invention during composite braking, pedal sense Uniformly stable, its stroke identifies total braking force square, hydraulic pressure
The change of power will not feed back to pedal, the driving habit of compound driver.
3rd, the present invention hydraulic regulation form for it is normally opened often and valve closing combination, plus the cushioning effect of hydraulic cylinder regulator,
So that hydraulic pressure change is slowed down, degree of regulation improves.
4th, the two-position five-way sliding valve that uses of the present invention a set of line control brake system failure by mechanical structure design effectively
The pattern of protection, it ensure that vehicle brake safe.
Brief description of the drawings
Fig. 1 is the composite braking system structure chart that the present invention has brake-by-wire function
Fig. 2 is composite braking process electric braking and the Torque distribution figure of hydraulic braking
Embodiment
Below in conjunction with the accompanying drawings and specific embodiment the present invention is described in further detail.
A kind of composite braking system with brake-by-wire function as shown in Figure 1, it includes brake pedal 1, brake boost
Device 2, master cylinder 3, two-position five-way sliding valve a11, two-position five-way sliding valve b12, stroke simulator a15, stroke simulator b16, liquid
Press adjustment module (motor 5, oil pump, high pressure accumulator 6, two-position two-way solenoid valve a7, two-position two-way solenoid valve b8, bi-bit bi-pass
Magnetic valve c9, two-position two-way solenoid valve d10, hydraulic cylinder regulator a13, hydraulic cylinder regulator b14), pedal displacement sensor 17, pressure
Sensor a18, pressure sensor b19 and brake monitor 20.
Two sets of brake fluid pressure control systems of the structure assembly.One is to produce hydraulic pressure by mechanical structure according to pedal force
The Conventional braking systems of power：By master cylinder 3, I1, I2 cross two-position five-way sliding valve a11, two-position five-way sliding valve b12 to its brake fluid by the road
BP be routed to wheel cylinder；Two be using motor 5 and pump 4 as power source, by magnetic valve a7, magnetic valve b8, magnetic valve c9,
Magnetic valve d10 switches control the line control brake system of different hydraulic couplings：Its brake fluid by oil storage tank 22 to hydraulic cylinder regulator a13,
Hydraulic cylinder regulator b14, by pipeline II1, II2 to wheel cylinder.Wherein mistake of the Conventional braking systems as line control brake system
Backup mode is imitated, ensures brake safe.The switching and interlocking of two kinds of brakes pass through two-position five-way sliding valve a11, two-position five-way
Guiding valve b12 realizes that the push rod of its valve element couples with hydraulic cylinder regulator piston push rod, while in time will row according to the position of valve element
Journey simulator a1, stroke simulator b16 access systems, there is provided good pedal sense.
Illustrate the working condition of the structure with reference to Motor Vehicle Braking Procedure.
When not braking, original state.Brake pedal 1 displacement is 0, two-position five-way sliding valve a11, two-position five-way sliding valve b12
Valve element and hydraulic cylinder regulator a13, hydraulic cylinder regulator b14 piston are in first position (high order end) under spring K2, K3 effect,
That is BP mouths path；Stroke simulator a15, stroke simulator b16 disconnect, i.e. BT open circuits；Hydraulic cylinder regulator a13, hydraulic cylinder regulator
Second and third chamber of b14 is separated with oil storage tank 22, i.e. AQ open circuits；Two-position two-way solenoid valve a7, two-position two-way solenoid valve c9 are
Normally close valve, two-position two-way solenoid valve b8, two-position two-way solenoid valve d10 are normally open valve, and motor 5 and pump 4 do not work, and now hydraulic pressure is adjusted
Section cylinder a13, hydraulic cylinder regulator b14 first chambers connect with oil storage tank 22, i.e., first chamber is without hydraulic coupling.
Braking starts.Brake monitor 20 receives the signal of pedal displacement sensor 17, is judged as after on-position exporting
Control signal so that motor 5 and pump 4 are worked, and magnetic valve a7, magnetic valve c9 are opened, and magnetic valve b8, magnetic valve d10 are closed；Hydraulic pressure
Regulation cylinder a13, hydraulic cylinder regulator b14 first chambers hydrodynamic force promote piston to move right, until second and third chamber oil-feed
Mouthful closing, by pressure sensor a18, pressure sensor b19 judge wheel cylinder set up closing magnetic valve a7 after less pressure,
Magnetic valve c9.Now, two-position five-way sliding valve a11, two-position five-way sliding valve b12 valve element separate with piston push rod, and valve element is in spring
The second place (low order end), guiding valve BP open circuits are placed in the presence of K1, traditional braking pipeline is closed；BT paths, stroke simulator
Access the master cylinder 3 of pedal 1, there is provided brake feel feeds back；AQ paths cause hydraulic cylinder regulator a13, hydraulic cylinder regulator b14 second and third
Chamber and the path of fluid reservoir 22, depressurize two chambers.
Increase decompression process.Brake monitor 20 obtains required total braking force square by pedal displacement sensor 17, and whole
Vehicle controller obtains the torque that electric braking can provide after exchanging information, by calculating hydraulic braking needed for distribution antero posterior axis in real time
Power.Hydrostatic sensor a18, hydrostatic sensor b19 monitor antero posterior axis hydraulic coupling in real time, and magnetic valve a7, magnetic valve c9 are beaten during supercharging
Opening, magnetic valve b8, magnetic valve d10 are closed, and magnetic valve a7, magnetic valve c9 are closed during decompression, and magnetic valve b8, magnetic valve d10 are opened,
Magnetic valve a7, magnetic valve b8, magnetic valve c9, magnetic valve d10 is set all to close and realize pressurize in certain precision.High-voltage oil liquid passes through electricity
Machine 5 and pump 4, which produce, is stored in high pressure accumulator 6, and low pressure fluid is the fluid in fluid reservoir 22.
Line control system fails.Failure mode one is hydraulic cylinder regulator a13, hydraulic cylinder regulator b14 first chambers can not build pressure,
The reason for this is that i. motor power supply troubles；Ii. motor or pump failure；Iii. magnetic valve a7, the abnormal closings of magnetic valve c9.Now return
To original state, two-position five-way sliding valve a11, two-position five-way sliding valve b12 valve element and hydraulic cylinder regulator a13, hydraulic cylinder regulator b14
Piston be in first position under spring K2, K3 effect, conventional hydraulic brakes recovery function.Failure mode hydraulic regulation
Cylinder a13, hydraulic cylinder regulator b14 can not be depressurized, and magnetic valve b8, the abnormal closings of magnetic valve d10, and now brake piping has liquid
Pressure, it can not adjust but ensure that vehicle has brake force, can safety arrestment.
ABS works.In the system, two systems pressure regulation can braked by force with the co-ordination of anti-lock braking system 21
Spend under larger or brake hard, ABS is independently carried out according to wheel speed sensors pressure regulation.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " illustrative examples ",
The description of " example ", " specific example " or " some examples " etc. means to combine specific features, the knot that the embodiment or example describe
Structure, material or feature are contained at least one embodiment or example of the present invention.In this manual, to above-mentioned term
Schematic representation is not necessarily referring to identical embodiment or example.Moreover, specific features, structure, material or the spy of description
Point can combine in an appropriate manner in any one or more embodiments or example.
Although an embodiment of the present invention has been shown and described, it will be understood by those skilled in the art that：Not
In the case of departing from the principle and objective of the present invention a variety of change, modification, replacement and modification can be carried out to these embodiments, this
The scope of invention is limited by claim and its equivalent.
Claims (8)
1. a kind of composite braking system with brake-by-wire function, it is characterised in that including brake pedal (1), brake boost
Device (2), master cylinder (3), two-position five-way sliding valve a (11), two-position five-way sliding valve b (12), stroke simulator (15), stroke simulator
(16), pedal displacement sensor (17), pressure sensor a (18), pressure sensor b (19), brake monitor (20) and hydraulic pressure
Adjustment module；Hydraulic regulation module includes motor (5), oil pump (4), high pressure accumulator (6), two-position two-way solenoid valve a (7), two
Position two-way electromagnetic valve b (8), two-position two-way solenoid valve c (9), two-position two-way solenoid valve d (10), hydraulic cylinder regulator a (13), hydraulic pressure
Adjust cylinder b (14)；
Oil storage tank (22) has four pipelines, the front and rear chamber of two of which pipeline connection master cylinder (3), the front and rear chamber connection of master cylinder (3)
Two-position five-way sliding valve a (11), two-position five-way sliding valve b (12) B mouths, two-position five-way sliding valve a (11), two-position five-way sliding valve b (12) P mouths
Connect ABS (21) oil inlet, ABS (21) is connected with four wheel cylinders, respectively filled wherein on front and back wheel pipeline pressure sensor a (18),
Pressure sensor b (19)；The road of oil storage tank (22) the 3rd successively connects oil pump (4), high pressure accumulator (6), then passes through electricity respectively
Magnet valve a (7), magnetic valve c (9) connection hydraulic cylinder regulator a (13), hydraulic cylinder regulator b (14) first chamber；The tunnel of oil storage tank the 4th connects
Two-position five-way sliding valve a (11), two-position five-way sliding valve b (12) A mouths are connect, and hydraulic cylinder regulator a (13), hydraulic pressure are connected by its Q mouth
The chambers of cylinder b (14) the 2nd the 3rd are adjusted, wherein being adjusted in two-position five-way sliding valve a (11), two-position five-way sliding valve b (12) A mouths and hydraulic pressure
Magnetic valve b (8), magnetic valve d (10) are installed between section cylinder a (13), hydraulic cylinder regulator b (14) first chamber；Two-position five-way sliding valve a
(11), two-position five-way sliding valve b (12) T mouths connect stroke simulator (15), stroke simulator (16) respectively；Two-position five-way sliding valve a
(11), it is connected between two-position five-way sliding valve b (12) and hydraulic cylinder regulator a (13), hydraulic cylinder regulator b (14) by push rod；
The system architecture is integrated with two sets of brake fluid pressure control systems：
First set is the Conventional braking systems according to pedal force by mechanical structure hydrodynamic force：Its brake fluid is by master cylinder (3)
I1, pipeline I2 cross two-position five-way sliding valve a (11) by the road, two-position five-way sliding valve b (12) BP is routed to wheel cylinder；
Second set be using motor (5) and pump (4) as power source, by magnetic valve a (7), magnetic valve b (8), magnetic valve c (9),
Magnetic valve d (10) switches control the line control brake system of different hydraulic couplings：Its brake fluid is by oil storage tank (22) to hydraulic cylinder regulator a
(13), hydraulic cylinder regulator b (14), by pipeline II1, II2 to wheel cylinder；
Failure backup mode of the Conventional braking systems as line control brake system；The switching and interlocking of two kinds of brakes are logical
Cross two-position five-way sliding valve a (11), two-position five-way sliding valve b (12) realization, push rod and the hydraulic cylinder regulator piston push rod coupling of its valve element
Close, while according to the position of valve element in time by stroke simulator a (15), stroke simulator b (16) access system, there is provided it is good
Pedal sense.
A kind of 2. composite braking system with brake-by-wire function according to claims 1, it is characterised in that：It is described
Two-position five-way sliding valve a (11), two-position five-way sliding valve b (12) valve element have two positions, in position for the moment, Conventional braking systems master
Path and the closing of line control brake system oil return line between cylinder and wheel cylinder；At position two, Conventional braking systems master cylinder and stroke mould
Path and line control brake system oil return line path between plan device.
A kind of 3. composite braking system with brake-by-wire function according to claims 1, it is characterised in that：Hydraulic pressure
Adjusting cylinder a (13), in hydraulic cylinder regulator b (14), be divided into 3 chambers in each cylinder body, the first chamber is that power produces chamber, second,
Three chambers are that brake fluid pressure produces chamber.
A kind of 4. composite braking system with brake-by-wire function according to claims 3, it is characterised in that：Hydraulic pressure
Regulation cylinder a (13), hydraulic cylinder regulator b (14) independently adjust the brake fluid pressure of antero posterior axis, and each pressure regulating cylinder is to together
The hydraulic coupling of axle wheel cylinder is equal but independent.
A kind of 5. composite braking system with brake-by-wire function according to claims 3, it is characterised in that：Hydraulic pressure
Regulation cylinder a (13), hydraulic cylinder regulator b (14) first chamber share a set of to be made up of motor (5), oil pump, high pressure accumulator (6)
Power source.
A kind of 6. composite braking system with brake-by-wire function according to claims 3, it is characterised in that：Hydraulic pressure
Adjust cylinder a (13), hydraulic cylinder regulator b (14) first chamber pressure it is separately adjustable by the switch of magnetic valve respectively.
A kind of 7. composite braking system with brake-by-wire function according to claims 2 or 3, it is characterised in that：
Two-position five-way sliding valve a (11), two-position five-way sliding valve b (12) have back-moving spring K1；Hydraulic cylinder regulator a (13), hydraulic cylinder regulator b
(14) there are back-moving spring K2, K3, K1~K3 is in compressive state all the time, when valve element is in first position with piston caused by K1
Elastic force is F1, and elastic force caused by K2, K3 is F2, and F2>F1.
A kind of 8. composite braking system with brake-by-wire function according to claims 2 or 3, it is characterised in that：
Two-position five-way sliding valve a (11), two-position five-way sliding valve b (12) valve element push rod and hydraulic cylinder regulator a (13), hydraulic cylinder regulator b
(14) coupled between piston, without mechanical connection between valve element push rod and valve element；As hydraulic cylinder regulator a (13), hydraulic cylinder regulator b
(14) during first chamber no pressure, two-position five-way sliding valve a (11), two-position five-way sliding valve b (12) are under spring force
First position, i.e., when line control brake system can not build pressure, tradition machinery brakes can play a role；As hydraulic cylinder regulator a
(13) after, hydraulic cylinder regulator b (14) first chamber establishes pressure, two-position five-way sliding valve a (11), two-position five-way sliding valve b (12)
The second place is under K1 effects, while stroke simulator access regenerative braking feels that line control brake system provides hydraulic coupling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710840910.4A CN107738638B (en) | 2017-09-18 | 2017-09-18 | Composite braking system with line control function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710840910.4A CN107738638B (en) | 2017-09-18 | 2017-09-18 | Composite braking system with line control function |
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| CN107738638A true CN107738638A (en) | 2018-02-27 |
| CN107738638B CN107738638B (en) | 2020-03-31 |
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| CN201710840910.4A Active CN107738638B (en) | 2017-09-18 | 2017-09-18 | Composite braking system with line control function |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110525409A (en) * | 2019-08-15 | 2019-12-03 | 芜湖伯特利汽车安全系统股份有限公司 | The redundancy service braking system of vehicle |
| CN110525410A (en) * | 2019-08-23 | 2019-12-03 | 芜湖伯特利汽车安全系统股份有限公司 | A kind of vehicle redundancy driving brake assist system |
| CN110723127A (en) * | 2019-09-29 | 2020-01-24 | 江苏大学 | Fault-tolerant control system and control method for brake-by-wire failure fault of automobile |
| CN110861625A (en) * | 2019-11-05 | 2020-03-06 | 南京经纬达汽车科技有限公司 | Distributed braking system with failure backup and braking pressure vector control method thereof |
| CN111016865A (en) * | 2020-01-08 | 2020-04-17 | 重庆理工大学 | Electronic control hydraulic brake power assisting system |
| CN111137265A (en) * | 2020-01-02 | 2020-05-12 | 佛山市一为制动技术有限公司 | Vehicle brake boosting system, control method and device |
| CN111572517A (en) * | 2020-05-29 | 2020-08-25 | 四川铭宏芯瑞科技有限公司 | Hydraulic system for realizing high-efficiency energy regenerative braking of vehicle |
| CN111923886A (en) * | 2020-07-07 | 2020-11-13 | 南京天航智能装备研究院有限公司 | Line-controlled chassis electro-hydraulic composite braking system and control method thereof |
| WO2021179118A1 (en) * | 2020-03-09 | 2021-09-16 | 华为技术有限公司 | Brake system, brake method and vehicle |
| CN113696743A (en) * | 2021-09-29 | 2021-11-26 | 上海电机学院 | Hybrid braking system and control method for pure electric and hybrid electric vehicle |
| WO2022174487A1 (en) * | 2021-02-22 | 2022-08-25 | 江苏大学 | Drive-by-wire vehicle, mechanical-hydraulic composite braking and gear shifting integrated system, and control method therefor |
| GB2607735A (en) * | 2021-02-22 | 2022-12-14 | Univ Jiangsu | Drive-by-wire vehicle, mechanical-hydraulic composite braking and gear shifting integrated system, and control method therefor |
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| CN111137265A (en) * | 2020-01-02 | 2020-05-12 | 佛山市一为制动技术有限公司 | Vehicle brake boosting system, control method and device |
| CN111016865A (en) * | 2020-01-08 | 2020-04-17 | 重庆理工大学 | Electronic control hydraulic brake power assisting system |
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| CN111572517A (en) * | 2020-05-29 | 2020-08-25 | 四川铭宏芯瑞科技有限公司 | Hydraulic system for realizing high-efficiency energy regenerative braking of vehicle |
| CN111923886A (en) * | 2020-07-07 | 2020-11-13 | 南京天航智能装备研究院有限公司 | Line-controlled chassis electro-hydraulic composite braking system and control method thereof |
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| GB2607735A (en) * | 2021-02-22 | 2022-12-14 | Univ Jiangsu | Drive-by-wire vehicle, mechanical-hydraulic composite braking and gear shifting integrated system, and control method therefor |
| GB2607735B (en) * | 2021-02-22 | 2023-08-09 | Univ Jiangsu | Brake-shift integrated system for wire-controlled vehicles based on machine-hydraulic compound and control method thereof |
| CN113696743A (en) * | 2021-09-29 | 2021-11-26 | 上海电机学院 | Hybrid braking system and control method for pure electric and hybrid electric vehicle |
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