CN106985805A - Multi-cavity master cylinder system with pedal sense simulator - Google Patents
Multi-cavity master cylinder system with pedal sense simulator Download PDFInfo
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- CN106985805A CN106985805A CN201710237443.6A CN201710237443A CN106985805A CN 106985805 A CN106985805 A CN 106985805A CN 201710237443 A CN201710237443 A CN 201710237443A CN 106985805 A CN106985805 A CN 106985805A
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- 230000015572 biosynthetic process Effects 0.000 claims abstract description 15
- 238000006073 displacement reaction Methods 0.000 claims description 14
- 239000010985 leather Substances 0.000 claims description 13
- 238000007789 sealing Methods 0.000 claims description 7
- 230000010355 oscillation Effects 0.000 abstract description 7
- 239000000047 product Substances 0.000 description 14
- 239000003921 oil Substances 0.000 description 5
- 239000012530 fluid Substances 0.000 description 3
- 208000002925 dental caries Diseases 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000006641 stabilisation Effects 0.000 description 2
- 238000011105 stabilization Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
- B60T13/10—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
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- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Braking Systems And Boosters (AREA)
Abstract
The present invention relates to motor vehicle braking system, and in particular to a kind of multi-cavity master cylinder system with pedal sense simulator；Including brake pedal, push rod one, master cylinder body, oil can and pressure charging system；Described master cylinder body includes T-shaped piston, first piston, second piston；Described brake pedal is connected by push rod one with T-shaped piston, described T-shaped piston and first piston the first chamber of formation, first piston and second piston the second chamber of formation, second piston and master cylinder body the 3rd chamber of formation；Baffle plate, described baffle plate and T-shaped piston formation booster cavity, described booster cavity connection pressure charging system are provided between described T-shaped piston and master cylinder body；Described oil can is connected with the first chamber, the second chamber respectively；The effective cross section product of described T-shaped piston is accumulated less than the effective cross section of first piston；This system improves master cylinder pressure control accuracy, master cylinder pressure oscillation when reducing active boost makes brake weight more smooth out, and improves user's riding experience.
Description
Technical field
The present invention relates to motor vehicle braking system, and in particular to a kind of multi-cavity master cylinder system with pedal sense simulator
System.
Background technology
Current brake-by-wire master cylinder system architecture is complicated, and cost is higher.And when actively building pressure, due to valve precision and control
The reasons such as precision processed, cause the pressure oscillation of master cylinder larger, and then cause brake fluctuation larger, have a strong impact on user and drive body
Test.
Pedal simulator typically all adds piston type using spring, brake weight is simulated by spring force feedback, not enough directly.
Because the force-displacement curve of brake is nonlinear and different vehicle, its force-displacement curve is also different, it is therefore desirable to
The different spring parameter of design, workload is big, and cost is higher.
The content of the invention
Cause cost higher to solve existing vehicle brake-by-wire master cylinder system architecture complexity, and built in active
During pressure, due to reasons such as valve precision and control accuracies, cause the pressure oscillation of master cylinder larger, and then cause brake fluctuation larger
The problem of, and existing pedal simulator typically all adds piston type using spring, and brake weight is simulated by spring force feedback,
It is not direct enough；Because the force-displacement curve of brake is nonlinear and different vehicle, its force-displacement curve also differs
Sample, it is therefore desirable to design different spring parameters, workload is big, the problem of cost is higher, and the invention provides a kind of band pedal
Feel the multi-cavity master cylinder system of simulator, this system improves master cylinder pressure control accuracy, braking master when reducing active boost
Cylinder pressure oscillation, reduces brake fluctuation, brake weight is more smoothed out, improve user's riding experience；Stepped on using hydraulic pressure directly-fed
Plate sense simulator, eliminates the spring in former simulator, by the reversed feedback pedal brake power of hydraulic direct, while only needing to select
Different rod diameters just can feed back different pedal senses.
The present invention includes following content：A kind of multi-cavity master cylinder system with pedal sense simulator, described band pedal
Feeling the multi-cavity master cylinder system of simulator includes brake pedal, push rod one, master cylinder body, oil can and pressure charging system；
Described master cylinder body includes T-shaped piston, first piston, second piston；
Described brake pedal is connected by push rod one with T-shaped piston, described T-shaped piston and first piston formation first
Chamber, first piston and second piston the second chamber of formation, second piston and master cylinder body the 3rd chamber of formation；
Baffle plate is provided between described T-shaped piston and master cylinder body, described baffle plate forms booster cavity with T-shaped piston,
Described booster cavity connection pressure charging system；
Described oil can is connected with the first chamber, the second chamber respectively；
The effective cross section product of described T-shaped piston is accumulated less than the effective cross section of first piston.
Preferably, pedal position is connected with the push rod one in the multi-cavity master cylinder system with pedal sense simulator
Displacement sensor.
The master cylinder system includes three cavitys, and baffle plate and T-shaped piston are provided between T-shaped piston and master cylinder body
Structure form booster cavity in itself, then connect pressure charging system in booster cavity, it is ensured that whole multi-cavity master cylinder system has enough
Pressure；The effective cross section of T-shaped piston is set to accumulate the effective cross section product for being less than first piston by setting；It is equal to according to pressure
The principle of pressure divided by effective cross section product；Because first piston net sectional area is larger, T-shaped piston net sectional area is smaller,
Therefore during active boost, the pressure of same scale feedback is amplified on pressure sensor systems, is easy to whole
The stabilization of human pilot brake system in operation, and larger pressure oscillation in booster cavity can be reduced, and make
The axial fluctuation of one piston reduces, and finally reduces brake fluctuation, improves the ride comfort of brake weight, improve user's
Riding experience；And improve master cylinder pressure control accuracy.
Preferably, set at the T-shaped head of the T-shaped piston in the multi-cavity master cylinder system with pedal sense simulator
Have and O-ring, sealing cup, circlip and leather cup seat are provided with T-shaped piston cup, described baffle plate.
O-ring, sealing cup, circlip and leather cup seat setting be for whole T-shaped piston and master cylinder body with
And the sealing property of booster cavity and stability it is more preferable.
Preferably, the first piston in the multi-cavity master cylinder system with pedal sense simulator and master cylinder body wall
Between be respectively arranged with first piston primary cup and first piston secondary leather cup.
Preferably, the second piston in the multi-cavity master cylinder system with pedal sense simulator and master cylinder body wall
Between be respectively arranged with second piston primary cup and second piston secondary leather cup.
Sealing and stability of the setting of piston cup also for whole cavity systems.
Preferably, in the multi-cavity master cylinder system with pedal sense simulator T-shaped piston, first piston,
T-shaped piston reset spring, first piston back-moving spring and second piston back-moving spring are connected on two pistons.Back-moving spring
Setting be easy to skidding after terminating involved piston preferably reset, keep the stabilization of each cavity pressure.
Preferably, it is provided with center in the second piston in the multi-cavity master cylinder system with pedal sense simulator
Valve and oil-feed valve rod；
Because the master cylinder system of the present invention is that multi-cavity is to have centre valve and the oil-feed in three cavitys, therefore the present invention
Valve rod is arranged on the upper of the second piston in the 3rd chamber, and by the device, hydraulic oil is pressed into ABS system.
Preferably, the effective cross section of the first piston in the multi-cavity master cylinder system with pedal sense simulator
Product is bigger than the effective cross section product of push rod one.First piston net sectional area is bigger than the net sectional area in push rod one, it is assumed that the
The net sectional area of one piston is N times of the net sectional area of push rod one, then the axial force of push rod one only has first piston axial direction
The 1/N of power, further reduces power by brake pedal lever ratio (T), therefore the final power fed back on pedal only has the
The 1/N/T of one piston axial thrust.
Using hydraulic pressure directly-fed pedal sense simulator, the spring in former simulator is eliminated, passes through the reversed feedback of hydraulic direct
Pedal brake power, at the same only need to change first piston and push rod once sectional area ratio can change pedal sense.
Preferably, the push rod one in the multi-cavity master cylinder system with pedal sense simulator and T-shaped piston contact
End is in have spacing between T-shaped piston at " ten " word shape, described " ten " font.
There is one section of S space between push rod one and T-shaped piston.When brakes active brake fails, driver steps on
Brake pedal, push rod one is axially moved, after S distances have been moved, push rod one and T-shaped piston rigid contact, is continued to step on braking and is stepped on
Plate, then push rod one promote T-shaped piston movement, finally produce brake force.When brakes active brake fails, can effectively it enter
Row braking.
Preferably, the effective cross section of the T-shaped piston in the multi-cavity master cylinder system with pedal sense simulator
Product is 1/2nd of the effective cross section product of first piston；The effective cross section product of described push rod one is effective for T-shaped piston
The a quarter of cross-sectional area.
The major function of the present invention can realize active brake, alternate brake, and the feedback pedal sense in active brake
Feel.
Active brake
When driver's brake pedal, pedal displacement sensor is at once by pedal displacement feedback of the information to ECU, ECU
Control pressure charging system to carry out supercharging work according to displacement information immediately, brake fluid is pumped into booster cavity.Due in booster cavity
Pressure increases, and promotes T-shaped piston movement, so that the first cavity pressure increases, further promotes first piston and second piston, will make
Hydrodynamic is pressed into ABS or ESP by outlet one and outlet two and (not identified in figure), so as to realize skidding.
Because first piston net sectional area is larger, T-shaped piston net sectional area is smaller, therefore in active boost process
In, the larger pressure oscillation in booster cavity can be reduced, and reduced the axial fluctuation of first piston, finally made brake Reeb
It is dynamic to reduce, the ride comfort of brake weight is improved, the riding experience of user is improved.
First piston net sectional area is bigger than the net sectional area in push rod, it is assumed that the net sectional area of first piston is to push away
N times of bar net sectional area, then the axial force of push rod only has the 1/N of first piston axial force, is passing through brake pedal lever
Further power is reduced than (T), therefore the final power fed back on pedal only has the 1/N/T of first piston axial thrust.
Alternate brake
There is one section of S space between push rod and T-shaped piston.When brakes active brake fails, driver steps on system
Dynamic pedal, push rod is axially moved, after S distances have been moved, and push rod and T-shaped piston rigid contact continue to step on brake pedal, then pushed away
Bar promotes T-shaped piston movement, finally produces brake force.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the accompanying drawing used required in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, without having to pay creative labor, may be used also
To obtain other accompanying drawings according to these accompanying drawings.
Fig. 1 is the overall structure diagram of the multi-cavity master cylinder system of the invention with pedal sense simulator.
Fig. 2 is existing pedal sense simulator structural representation.
Fig. 3 is the alternate brake schematic diagram of the multi-cavity master cylinder system of the invention with pedal sense simulator.
Label declaration：1st, brake pedal；2nd, pedal displacement sensor；3rd, push rod one；4th, T-shaped piston；5 master cylinder bodies；6、
First piston；7th, second piston；8th, second piston back-moving spring；9th, the 3rd chamber；10th, centre valve；11st, oil-feed valve rod；12nd, second
Piston primary cup；13rd, second piston secondary leather cup；14th, first piston back-moving spring；15th, spring base；16th, the second chamber；17th, first
Piston primary cup；18th, first piston secondary leather cup；19th, T-shaped piston reset spring；20th, the first chamber；21st, T-shaped piston cup；22、
Booster cavity；23rd, baffle plate；24th, O-ring；25th, sealing cup；26th, circlip；27th, leather cup seat；28th, oil can；29th, supercharging system
System；30th, one is exported；31st, two are exported；32nd, simulator outer cylinder body；33rd, piston；34th, spring one；35th, spring two；36th, rear end cap.
Embodiment
With reference to embodiment, the present invention is described in further detail, following examples be explanation of the invention and
The invention is not limited in following examples.
Embodiment：
As shown in Figure 1, 2, 3, the invention provides a kind of multi-cavity master cylinder system with pedal sense simulator, including system
Dynamic pedal 1, push rod 1, master cylinder body 5, oil can 28 and pressure charging system 29；Master cylinder body 5 include T-shaped piston 4, first piston 6,
Second piston 7；Brake pedal 1 is connected by push rod 1 with T-shaped piston 4, described T-shaped piston 4 and the formation of first piston 6 the
One chamber 20, first piston 6 and the second chamber 16 of formation of second piston 7, second piston 7 and the 3rd chamber 9 of formation of master cylinder body 5；T-shaped is lived
Baffle plate 23, described baffle plate 23 and the formation booster cavity 22 of T-shaped piston 4, described supercharging are provided between plug 4 and master cylinder body 5
Chamber 22 connects pressure charging system 29；Oil can 28 is connected with the first chamber 20, the second chamber 16 respectively；The effective cross section product of T-shaped piston 4 is small
Accumulated in the effective cross section of first piston 6；And the effective cross section product of first piston 6 is bigger than the effective cross section product of push rod 1；
The effective cross section product of specific T-shaped piston is 1/2nd of the effective cross section product of first piston；Described push rod one
The a quarter that effective cross section product is accumulated for T-shaped piston effective cross section；Pedal displacement sensor 2 is connected with push rod one；T-shaped
It is provided with the T-shaped head of piston at T-shaped piston cup 21, described baffle plate and is provided with O-ring 24, sealing cup 25, elasticity gear
Circle 26 and leather cup seat 27；First piston primary cup 17 and first piston pair are respectively arranged between first piston and master cylinder body wall
Leather cup 18；Second piston primary cup 12 and second piston secondary leather cup 13 are respectively arranged between second piston and master cylinder body wall；T
Shape piston, first piston, it is connected to T-shaped piston reset spring 19, first piston back-moving spring 14 and in second piston
Two piston reset springs 8；Centre valve 10 and oil-feed valve rod 11 are provided with second piston；Push rod one is in T-shaped piston contact end
There is interval S between T-shaped piston at " ten " word shape, described " ten " font.
Active brake
When driver's brake pedal, pedal displacement sensor 2 is at once by pedal displacement feedback of the information to ECU, ECU
Control pressure charging system 29 to carry out supercharging work according to displacement information immediately, brake fluid is pumped into booster cavity 22.Due to booster cavity
In pressure increase, promote T-shaped piston 4 to move, so that the pressure of the first chamber 20 increases, further promote first piston 6 and second
Piston 7, brake fluid is pressed into ABS or ESP by outlet 1 and outlet 2 and (not identified in figure), so as to realize skidding.
Because the net sectional area of first piston 6 is larger, the T-shaped net sectional area of piston 4 is smaller, therefore in active boost process
In, the larger pressure oscillation in booster cavity 22 can be reduced, and reduced the axial fluctuation of first piston 6, finally made brake
Fluctuation reduces, and improves the ride comfort of brake weight, improves the riding experience of user.
The net sectional area of first piston 6 is bigger than the net sectional area in push rod 1, it is assumed that the net sectional area of first piston 6
It is N times of the net sectional area of push rod 1, then the axial force of push rod 1 only has the 1/N of the axial force of piston 1, is passing through brake pedal thick stick
Bar ratio (T) further reduces power, therefore the final power fed back on pedal only has the 1/N/T of the axial thrust of piston 1.
There is one section of S space between push rod 1 and T-shaped piston, refer to accompanying drawing 3.When brakes active brake fails, drive
The person's of sailing brake pedal, push rod 1 is axially moved, after S distances have been moved, and push rod 1 and T-shaped piston rigid contact continue to step on
Brake pedal, then push rod 1 promote T-shaped piston movement, finally produce brake force.
Furthermore, it is necessary to explanation, the specific embodiment described in this specification, is named the shape of its parts and components
Title etc. can be different.The equivalent or simple change that all construction, feature and principles according to described in inventional idea of the present invention are done, is wrapped
Include in the protection domain of patent of the present invention.Those skilled in the art can be to described specific implementation
Example is made various modifications or supplement or substituted using similar mode, structure without departing from the present invention or surmounts this
Scope as defined in the claims, all should belong to protection scope of the present invention.
Claims (10)
1. a kind of multi-cavity master cylinder system with pedal sense simulator, it is characterised in that：It is described with pedal sense simulator
Multi-cavity master cylinder system includes brake pedal, push rod one, master cylinder body, oil can and pressure charging system；
Described master cylinder body includes T-shaped piston, first piston, second piston；
Described brake pedal is connected by push rod one with T-shaped piston, described T-shaped piston and first piston the first chamber of formation,
First piston and second piston the second chamber of formation, second piston and master cylinder body the 3rd chamber of formation；
Baffle plate is provided between described T-shaped piston and master cylinder body, described baffle plate and T-shaped piston formation booster cavity are described
Booster cavity connection pressure charging system；
Described oil can is connected with the first chamber, the second chamber respectively；
The effective cross section product of described T-shaped piston is accumulated less than the effective cross section of first piston.
2. the multi-cavity master cylinder system according to claim 1 with pedal sense simulator, it is characterised in that：Described pushes away
Pedal displacement sensor is connected with bar one.
3. the multi-cavity master cylinder system according to claim 1 with pedal sense simulator, it is characterised in that：Described T
Shape piston T-shaped head at be provided with T-shaped piston cup, described baffle plate be provided with O-ring, sealing cup, circlip with
Leather cup seat.
4. the multi-cavity master cylinder system according to claim 1 with pedal sense simulator, it is characterised in that：Described
First piston primary cup and first piston secondary leather cup are respectively arranged between one piston and master cylinder body wall.
5. the multi-cavity master cylinder system according to claim 1 with pedal sense simulator, it is characterised in that：Described
Second piston primary cup and second piston secondary leather cup are respectively arranged between two pistons and master cylinder body wall.
6. the multi-cavity master cylinder system according to claim 1 with pedal sense simulator, it is characterised in that：Described T
Shape piston, first piston, T-shaped piston reset spring, first piston back-moving spring and second are connected in second piston live
Fill in back-moving spring.
7. the multi-cavity master cylinder system according to claim 1 with pedal sense simulator, it is characterised in that：Described
Centre valve and oil-feed valve rod are provided with two pistons.
8. the multi-cavity master cylinder system according to claim 1 with pedal sense simulator, it is characterised in that：Described
The effective cross section product of one piston is bigger than the effective cross section product of push rod one.
9. the multi-cavity master cylinder system according to claim 1 with pedal sense simulator, it is characterised in that：Described pushes away
Bar one is in have spacing between T-shaped piston at " ten " word shape, described " ten " font with T-shaped piston contact end.
10. the multi-cavity master cylinder system according to claim 1 with pedal sense simulator, it is characterised in that：Described T
The effective cross section product of shape piston is 1/2nd of the effective cross section product of first piston；Described push rod one it is effective transversal
Area is a quarter that T-shaped piston effective cross section is accumulated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710237443.6A CN106985805A (en) | 2017-04-12 | 2017-04-12 | Multi-cavity master cylinder system with pedal sense simulator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710237443.6A CN106985805A (en) | 2017-04-12 | 2017-04-12 | Multi-cavity master cylinder system with pedal sense simulator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106985805A true CN106985805A (en) | 2017-07-28 |
Family
ID=59415050
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710237443.6A Pending CN106985805A (en) | 2017-04-12 | 2017-04-12 | Multi-cavity master cylinder system with pedal sense simulator |
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| Country | Link |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109229084A (en) * | 2018-10-24 | 2019-01-18 | 苏州齐思智行汽车***有限公司 | Electronic hydraulic brake system and its checking cylinder |
| CN111231915A (en) * | 2020-02-21 | 2020-06-05 | 苏州挚途科技有限公司 | Brake system |
| CN112512880A (en) * | 2020-09-10 | 2021-03-16 | 华为技术有限公司 | Hydraulic brake device, hydraulic brake system and automobile |
| CN112977056A (en) * | 2021-03-30 | 2021-06-18 | 浙江工业大学之江学院 | University student's equation motorcycle race |
| CN113597387A (en) * | 2019-03-08 | 2021-11-02 | 株式会社万都 | Master cylinder and electronic brake system having the same |
| CN113874263A (en) * | 2019-05-31 | 2021-12-31 | 株式会社万都 | Electronic brake system and method of operating the same |
| CN115431940A (en) * | 2022-09-05 | 2022-12-06 | 浙江亚太机电股份有限公司 | Three-cavity pressurization structure for vehicle electronic hydraulic braking system |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109229084A (en) * | 2018-10-24 | 2019-01-18 | 苏州齐思智行汽车***有限公司 | Electronic hydraulic brake system and its checking cylinder |
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| CN113874263A (en) * | 2019-05-31 | 2021-12-31 | 株式会社万都 | Electronic brake system and method of operating the same |
| CN113874263B (en) * | 2019-05-31 | 2024-04-16 | 汉拿万都株式会社 | Electronic brake system and method of operating the same |
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| CN112512880A (en) * | 2020-09-10 | 2021-03-16 | 华为技术有限公司 | Hydraulic brake device, hydraulic brake system and automobile |
| WO2022051981A1 (en) * | 2020-09-10 | 2022-03-17 | 华为技术有限公司 | Hydraulic braking apparatus, hydraulic braking system, and vehicle |
| CN112977056A (en) * | 2021-03-30 | 2021-06-18 | 浙江工业大学之江学院 | University student's equation motorcycle race |
| CN115431940A (en) * | 2022-09-05 | 2022-12-06 | 浙江亚太机电股份有限公司 | Three-cavity pressurization structure for vehicle electronic hydraulic braking system |
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