CN117584910A - Redundant hydraulic electronic pedal simulator and working method thereof - Google Patents
Redundant hydraulic electronic pedal simulator and working method thereof Download PDFInfo
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- CN117584910A CN117584910A CN202410073143.9A CN202410073143A CN117584910A CN 117584910 A CN117584910 A CN 117584910A CN 202410073143 A CN202410073143 A CN 202410073143A CN 117584910 A CN117584910 A CN 117584910A
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- push rod
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- 238000000034 method Methods 0.000 title claims abstract description 21
- 238000002955 isolation Methods 0.000 claims description 20
- 238000006073 displacement reaction Methods 0.000 claims description 14
- 238000004088 simulation Methods 0.000 claims description 11
- 229910000831 Steel Inorganic materials 0.000 claims description 9
- 239000010959 steel Substances 0.000 claims description 9
- 238000006243 chemical reaction Methods 0.000 claims description 6
- 238000001514 detection method Methods 0.000 claims description 6
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 abstract description 3
- 230000007547 defect Effects 0.000 abstract description 3
- 238000013461 design Methods 0.000 abstract description 3
- 230000035807 sensation Effects 0.000 description 5
- 230000006870 function Effects 0.000 description 4
- 238000004891 communication Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000007789 sealing Methods 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
- B60T13/16—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 pumps directly, i.e. without interposition of accumulators or reservoirs
- B60T13/161—Systems with master cylinder
- B60T13/167—In combination with distributor valve
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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
- B60T7/00—Brake-action initiating means
- B60T7/02—Brake-action initiating means for personal initiation
- B60T7/04—Brake-action initiating means for personal initiation foot actuated
- B60T7/06—Disposition of pedal
-
- 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
- B60T2270/00—Further aspects of brake control systems not otherwise provided for
- B60T2270/40—Failsafe aspects of brake control systems
- B60T2270/413—Plausibility monitoring, cross check, redundancy
-
- 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
- B60T2270/00—Further aspects of brake control systems not otherwise provided for
- B60T2270/82—Brake-by-Wire, EHB
Landscapes
- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Regulating Braking Force (AREA)
Abstract
The invention discloses a redundant hydraulic electronic pedal simulator and a working method thereof, belonging to the field of automobile braking. The redundant hydraulic electronic pedal simulator and the working method thereof are adopted, the master cylinder pressure building module and the simulator module are separated, different pedal feel can be realized by replacing the simulator module, the defects of fixed transmission mechanical pedal structure and single pedal feel are overcome, the redundant hydraulic electronic pedal simulator can be used for matching different types of vehicles with electronic mechanical brakes, and the redundant braking function is realized by matching with an EMB caliper through the redundant design of the pedal simulator.
Description
Technical Field
The invention relates to the technical field of automobile braking, in particular to a redundant hydraulic electronic pedal simulator and a working method thereof.
Background
With the continuous development of electric and intelligent automobiles, the electrification degree of the automobiles is higher and higher, and the automobile is a trend to be operated by a wire control technology. In the future, with the development and popularization of an Electronic Mechanical Brake (EMB), a traditional hydraulic system is eliminated, and a brake pedal and a brake are completely decoupled, so that a pedal feel simulator is needed to replace an original device in a traditional power assisting mode so as to provide good pedal feel, meanwhile, through flexible and reliable electric signals as media for communication between a driver and a vehicle, the intention of the driver is transmitted to a vehicle brake controller, and the vehicle brake controller sends out control signals to realize reliable braking of the vehicle.
Meanwhile, with the advent of the intelligent age of automobile electrification, the braking safety performance of the automobile is more and more paid attention to, but the traditional EMB brake is difficult to set up by failure redundancy backup through a motor driving braking failure function.
Disclosure of Invention
In order to solve the problems, the invention provides a redundant hydraulic electronic pedal simulator and a working method thereof, wherein the master cylinder pressure building module and the simulator module are separated, different pedal sensations can be realized by replacing the simulator module, the defects of fixed transmission mechanical pedal structure and single pedal sensation are overcome, the redundant hydraulic electronic pedal simulator can be used for matching different types of vehicles with electronic mechanical brakes, and the redundancy of braking functions is realized by matching an EMB caliper through the redundant design of the pedal simulator.
In order to achieve the above purpose, the invention provides a redundant hydraulic electronic pedal simulator, which comprises a master cylinder pressure building module and a simulator module, wherein the master cylinder pressure building module is communicated with the simulator module or is communicated with an EMB caliper through an oil way pipeline and a switch valve assembly arranged on the oil way pipeline.
Preferably, the main cylinder pressure building module comprises a cylinder body, a main cylinder piston axially and slidably arranged at one end of the cylinder body, and a push rod connected with the main cylinder piston, wherein the push rod is arranged in linkage with the brake pedal;
the other end of the cylinder body is communicated with an oil pipeline;
the inside of the cylinder body is in pressure connection with one end of the main cylinder piston through the main cylinder spring and the spring seat in sequence, the inside of the other end of the main cylinder piston is provided with a positioning groove, the positioning groove is connected with one end of the push rod in a penetrating way, and the other end of the push rod penetrates out of the positioning groove;
the inner wall of the positioning groove is correspondingly clamped with the outer circumference side of the spring washer, the inner circumference side of the spring washer is in interference fit with the outer circumference side of the push rod, and a push rod spring is sleeved on the push rod between the spring washer and the inner wall of the positioning groove.
Preferably, the master cylinder pressure building module further comprises a displacement detection assembly for detecting the displacement of the master cylinder piston, wherein the displacement detection assembly comprises magnetic steel fixed at one end of the master cylinder piston far away from the push rod through a gasket and a displacement sensor fixed on the inner wall of the cylinder body corresponding to the magnetic steel.
Preferably, the switch valve assembly is electrically connected with a coil plug assembly fixed on the cylinder body, and the coil plug assembly comprises a control coil and a plug which are integrally arranged.
Preferably, the switch valve component is a two-position three-way valve, an oil inlet of the two-position three-way valve is communicated with the simulator module, an oil outlet of the two-position three-way valve is communicated with the master cylinder pressure building module, and a working port of the two-position three-way valve is communicated with the EMB caliper.
Preferably, the switch valve assembly comprises a linear valve and an isolation valve, wherein an oil inlet and an oil outlet of the linear valve are respectively communicated with the simulator module and the master cylinder pressure building module, an input end of the isolation valve is further communicated between the linear valve and the master cylinder pressure building module, and an output end of the isolation valve is communicated with the EMB caliper.
Preferably, the isolation valve is a normally closed solenoid valve.
A working method of a redundant hydraulic electronic pedal simulator comprises the following steps:
when the pedal simulation mode is selected, the coil plug assembly drives the two-position three-way valve to be communicated with the master cylinder pressure building module and the simulator module, the pedal is stepped down, the master cylinder piston is pushed to move through the push rod, the master cylinder spring is compressed, meanwhile, the brake oil in the cylinder body is pumped into the simulator assembly, the piston of the simulator assembly moves, a reaction force is generated, the master cylinder piston is acted, the master cylinder piston moves reversely, and then the push rod is acted on the pedal, so that pedal force is generated;
when the redundant braking mode is selected, the coil plug assembly drives the two-position three-way valve to be communicated with the master cylinder pressure building module and the EMB calipers, the pedal is stepped on at the moment, the master cylinder piston is pushed to move through the push rod, the braking oil is pumped into the EMB calipers, and the EMB calipers are driven to brake.
A working method of a redundant hydraulic electronic pedal simulator comprises the following steps:
selecting a working mode as a pedal simulation mode or a redundant brake mode, when the pedal simulation mode is selected, the coil plug assembly drives the linear valve to be opened, simultaneously closes the isolation valve, presses the pedal at the moment, pushes the main cylinder piston to move through the push rod, compresses the main cylinder spring, pumps the brake oil in the cylinder body into the simulator assembly, simultaneously moves the piston of the simulator assembly, simultaneously generates a reaction force, acts on the main cylinder piston, and the main cylinder piston moves reversely to act on the pedal through the push rod, so as to generate pedal force;
when the redundant braking mode is selected, the coil plug assembly drives the linear valve to be closed, meanwhile, the isolation valve is opened, the master cylinder pressure building module and the EMB calipers are communicated, the pedal is stepped on at the moment, the master cylinder piston is pushed to move through the push rod, the braking oil is pumped into the EMB calipers, and the EMB calipers are driven to brake.
The invention has the following beneficial effects:
1. the simulator module is an independent module, can be replaced, realizes simulation of different pedal feel, and is matched with different vehicles;
2. the redundancy of the braking function is realized by driving the electromagnetic valve to cooperate with the EMB caliper, so that the problem of difficult redundancy of the EMB caliper structure is solved;
3. the electromagnetic coil and the plug are integrated, so that the structure is simple, and the installation is convenient.
The technical scheme of the invention is further described in detail through the drawings and the embodiments.
Drawings
FIG. 1 is a schematic diagram of a redundant hydraulic electronic pedal simulator of example 1 according to the present invention;
FIG. 2 is a schematic diagram of a redundant hydraulic electronic pedal simulator of example 2 according to the present invention;
fig. 3 is an outline view of a redundant hydraulic electronic pedal simulator according to the present invention.
Wherein: 1. a simulator module; 2. a master cylinder pressure building module; 20. a push rod; 21. a positioning groove; 22. a spring washer; 23. a push rod spring; 24. a master cylinder piston; 25. magnetic steel; 26. a cylinder; 27. a spring seat; 28. a master cylinder spring; 29. a bleeder screw; 3. the EMB calipers are communicated; 4. a two-position three-way valve; 5. a coil plug assembly; 50. a plug; 51. a control coil; 6. a linear valve; 7. an isolation valve.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the detailed description and specific examples, while indicating the embodiment of the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present application based on the embodiments herein. Examples of the embodiments are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements throughout or elements having like or similar functionality.
It should be noted that the terms "comprises" and "comprising," along with any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or server that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed or inherent to such process, method, article, or apparatus, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
Like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.
In the description of the present invention, it should be noted that, directions or positional relationships indicated by terms such as "upper", "lower", "inner", "outer", etc., are directions or positional relationships based on those shown in the drawings, or those that are conventionally put in use, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the apparatus or elements to be referred to must have a specific direction, be constructed and operated in a specific direction, and thus should not be construed as limiting the present invention.
In the description of the present invention, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
As shown in fig. 3, a redundant hydraulic electronic pedal simulator comprises a master cylinder pressure building module 2 and a simulator module 1, wherein the master cylinder pressure building module 2 is communicated with the simulator module 1 or is communicated with an EMB caliper 3 through an oil way pipeline and a switching valve assembly arranged on the oil way pipeline. The threaded hole for installing the oil pipe is machined in the clamp body of the EMB clamp, the sealing performance of the piston of the EMB clamp is good, and brake oil does not leak after entering.
Preferably, the master cylinder pressure building module 2 comprises a cylinder body 26, a master cylinder piston 24 axially and slidably arranged at one end of the cylinder body 26, and a push rod 20 connected with the master cylinder piston 24, wherein the push rod 20 is arranged in linkage with a brake pedal; the other end of the cylinder body 26 is communicated with an oil pipeline; the inside of the cylinder body 26 is in pressure connection with one end of the master cylinder piston 24 through the master cylinder spring 28 and the spring seat 27 in sequence, the inside of the other end of the master cylinder piston 24 is provided with a positioning groove 21, the positioning groove 21 is connected with one end of the push rod 20 in a penetrating way, and the other end of the push rod 20 penetrates out of the positioning groove 21; the inner wall of the positioning groove 21 and the position corresponding to the push rod 20 are clamped with the outer circumference side of the spring washer 22, the inner circumference side of the spring washer 22 is in interference fit with the outer circumference side of the push rod 20, a push rod spring 23 is sleeved on the push rod 20 between the spring washer 22 and the inner wall of the positioning groove 21, and the push rod 20 is fixed through the spring washer 22 and the push rod spring 23. A bleeder screw 29 is also connected to the cylinder 26.
Preferably, the master cylinder pressure building module 2 further comprises a displacement detection assembly for detecting the displacement of the master cylinder piston 24, the displacement detection assembly comprises a magnetic steel 25 fixed on one end, far away from the push rod 20, of the master cylinder piston 24 through a gasket and a displacement sensor fixed on the inner wall of the cylinder body 26 corresponding to the magnetic steel 25, a containing groove is formed in the end portion of the master cylinder piston 24 in the embodiment, the magnetic steel 25 is in interference fit in the containing groove, and the notch of the containing groove is fixed through the gasket, so that the axial movement of the magnetic steel 25 is avoided. Monitoring the displacement of the master cylinder piston 24, and thus the pedal displacement, is achieved by detecting.
Preferably, the switching valve assembly is electrically connected to a coil plug assembly 5 fixed to the cylinder 26, and the coil plug assembly 5 includes a control coil 51 and a plug 50 integrally provided.
Example 1
As shown in fig. 1, the switch valve assembly is a two-position three-way valve 4, an oil inlet of the two-position three-way valve 4 is communicated with the simulator module 1, an oil outlet of the two-position three-way valve 4 is communicated with the master cylinder pressure building module 2, and a working port of the two-position three-way valve 4 is communicated with the EMB caliper 3.
A working method of a redundant hydraulic electronic pedal simulator comprises the following steps:
when the pedal simulation mode is selected, the coil plug assembly 5 drives the two-position three-way valve 4 to communicate the master cylinder pressure building module 2 and the simulator module 1, the pedal is stepped down at the moment, the master cylinder piston 24 is pushed to move through the push rod 20, the master cylinder spring 28 is compressed, meanwhile, the brake oil in the cylinder body 26 is pumped into the simulator assembly, the piston of the simulator assembly moves, and meanwhile, a reaction force is generated, the master cylinder piston 24 is acted, the master cylinder piston 24 moves reversely, and then the pedal force is generated through the push rod 20;
when the redundant braking mode is selected, the coil plug assembly 5 drives the two-position three-way valve 4 to be communicated with the master cylinder pressure building module 2 and the EMB calipers, the pedal is stepped on at the moment, the master cylinder piston 24 is pushed to move through the push rod 20, the braking oil is pumped into the EMB calipers, and the EMB calipers are driven to brake.
Example 2
As shown in fig. 2, the on-off valve assembly comprises a linear valve 6 and an isolation valve 7, wherein an oil inlet and an oil outlet of the linear valve 6 are respectively communicated with the simulator module 1 and the master cylinder pressure building module 2, an input end of the isolation valve 7 is further communicated between the linear valve 6 and the master cylinder pressure building module 2, and an output end of the isolation valve 7 is communicated with the EMB caliper 3. Preferably, the isolation valve 7 is a normally closed solenoid valve.
A working method of a redundant hydraulic electronic pedal simulator comprises the following steps:
the working mode is selected to be a pedal simulation mode or a redundant brake mode, when the pedal simulation mode is selected, the coil plug assembly 5 drives the linear valve 6 to be opened, meanwhile, the isolation valve 7 is closed, the pedal is stepped on, the main cylinder piston 24 is pushed to move through the push rod 20, the main cylinder spring 28 is compressed, meanwhile, the brake oil in the cylinder body 26 is pumped into the simulator assembly, the piston of the simulator assembly moves, a reaction force is generated, the main cylinder piston 24 is acted, the main cylinder piston 24 moves reversely, and then the pedal force is generated by acting on the pedal through the push rod 20;
when the redundant braking mode is selected, the coil plug assembly 5 drives the linear valve 6 to be closed, meanwhile, the isolation valve 7 is opened, the master cylinder pressure building module 2 and the EMB calipers are communicated, a pedal is stepped on at the moment, the master cylinder piston 24 is pushed to move through the push rod 20, a brake oil is pumped into the EMB calipers, and the EMB calipers are driven to brake.
I.e. the two-position three-way valve 4 is replaced in example 2 by a linear valve 6 and an isolation valve 7.
In addition, in the embodiment, by utilizing the opening controllable characteristic of the linear valve 6, the opening of the linear valve 6 at different moments can be controlled through software, so that simulation of different pedal sensations can be realized without frequently replacing a simulator component.
Therefore, the redundant hydraulic electronic pedal simulator and the working method thereof are adopted, different pedal sensations can be realized by separating the master cylinder pressure building module from the simulator module and replacing the simulator module, the defects of fixed transmission mechanical pedal structure and single pedal sensation are overcome, the redundant hydraulic electronic pedal simulator can be used for matching different types of vehicles with the electronic mechanical brake, and the redundant braking function is realized by matching an EMB caliper through the redundant design of the pedal simulator.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention and not for limiting it, and although the present invention has been described in detail with reference to the preferred embodiments, it will be understood by those skilled in the art that: the technical scheme of the invention can be modified or replaced by the same, and the modified technical scheme cannot deviate from the spirit and scope of the technical scheme of the invention.
Claims (7)
1. A redundant hydraulic electronic pedal simulator is characterized in that: the pedal control device comprises a master cylinder pressure building module and a simulator module, wherein the master cylinder pressure building module is communicated with the simulator module or is communicated with an EMB caliper through an oil path pipeline and a switching valve assembly arranged on the oil path pipeline, the master cylinder pressure building module is separated from the simulator module, and different pedal feel is realized by replacing the simulator module;
the main cylinder pressure building module comprises a cylinder body, a main cylinder piston axially and slidably arranged at one end of the cylinder body, and a push rod connected with the main cylinder piston, wherein the push rod is arranged in linkage with the brake pedal;
the other end of the cylinder body is communicated with an oil pipeline;
the inside of the cylinder body is in pressure connection with one end of the main cylinder piston through the main cylinder spring and the spring seat in sequence, the inside of the other end of the main cylinder piston is provided with a positioning groove, the positioning groove is connected with one end of the push rod in a penetrating way, and the other end of the push rod penetrates out of the positioning groove;
the inner wall of the positioning groove is clamped with the outer circumferential side of the spring washer at a position corresponding to the push rod, the inner circumferential side of the spring washer is in interference fit with the outer circumferential side of the push rod, and a push rod spring is sleeved on the push rod between the spring washer and the inner wall of the positioning groove;
the master cylinder pressure building module further comprises a displacement detection assembly for detecting the displacement of the master cylinder piston, wherein the displacement detection assembly comprises magnetic steel fixed at one end, far away from the push rod, of the master cylinder piston through a gasket and a displacement sensor fixed on the inner wall of the cylinder body corresponding to the magnetic steel.
2. A redundant hydraulic electronic pedal simulator according to claim 1 wherein: the switch valve assembly is electrically connected with a coil plug assembly fixed on the cylinder body, and the coil plug assembly comprises a control coil and a plug which are integrally arranged.
3. A redundant hydraulic electronic pedal simulator according to claim 2 wherein: the switch valve component is a two-position three-way valve, an oil inlet of the two-position three-way valve is communicated with the simulator module, an oil outlet of the two-position three-way valve is communicated with the master cylinder pressure building module, and a working port of the two-position three-way valve is communicated with the EMB caliper.
4. A redundant hydraulic electronic pedal simulator according to claim 2 wherein: the on-off valve assembly comprises a linear valve and an isolation valve, an oil inlet and an oil outlet of the linear valve are respectively communicated with the simulator module and the master cylinder pressure building module, an input end of the isolation valve is further communicated between the linear valve and the master cylinder pressure building module, and an output end of the isolation valve is communicated with the EMB caliper.
5. A redundant hydraulic electronic pedal simulator according to claim 4 wherein: the isolation valve is a normally closed electromagnetic valve.
6. A method of operating a redundant hydraulic electronic pedal simulator as defined in any one of claims 1-3 wherein: the method comprises the following steps:
when the pedal simulation mode is selected, the coil plug assembly drives the two-position three-way valve to be communicated with the master cylinder pressure building module and the simulator module, the pedal is stepped down, the master cylinder piston is pushed to move through the push rod, the master cylinder spring is compressed, meanwhile, the brake oil in the cylinder body is pumped into the simulator assembly, the piston of the simulator assembly moves, a reaction force is generated, the master cylinder piston is acted, the master cylinder piston moves reversely, and then the push rod is acted on the pedal, so that pedal force is generated;
when the redundant braking mode is selected, the coil plug assembly drives the two-position three-way valve to be communicated with the master cylinder pressure building module and the EMB calipers, the pedal is stepped on at the moment, the master cylinder piston is pushed to move through the push rod, the braking oil is pumped into the EMB calipers, and the EMB calipers are driven to brake.
7. A method of operating a redundant hydraulic electronic pedal simulator as set forth in any one of claims 1, 2, 4, 5 wherein: the method comprises the following steps:
selecting a working mode as a pedal simulation mode or a redundant brake mode, when the pedal simulation mode is selected, the coil plug assembly drives the linear valve to be opened, simultaneously closes the isolation valve, presses the pedal at the moment, pushes the main cylinder piston to move through the push rod, compresses the main cylinder spring, pumps the brake oil in the cylinder body into the simulator assembly, simultaneously moves the piston of the simulator assembly, simultaneously generates a reaction force, acts on the main cylinder piston, and the main cylinder piston moves reversely to act on the pedal through the push rod, so as to generate pedal force;
when the redundant braking mode is selected, the coil plug assembly drives the linear valve to be closed, meanwhile, the isolation valve is opened, the master cylinder pressure building module and the EMB calipers are communicated, the pedal is stepped on at the moment, the master cylinder piston is pushed to move through the push rod, the braking oil is pumped into the EMB calipers, and the EMB calipers are driven to brake.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410073143.9A CN117584910B (en) | 2024-01-18 | 2024-01-18 | Redundant hydraulic electronic pedal simulator and working method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410073143.9A CN117584910B (en) | 2024-01-18 | 2024-01-18 | Redundant hydraulic electronic pedal simulator and working method thereof |
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| CN117584910A true CN117584910A (en) | 2024-02-23 |
| CN117584910B CN117584910B (en) | 2024-03-26 |
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| CN112776786A (en) * | 2021-01-29 | 2021-05-11 | 山东交通学院 | Drive-by-wire braking system with redundancy function |
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| CN113942479A (en) * | 2020-07-15 | 2022-01-18 | 比亚迪股份有限公司 | Braking system and automobile |
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2024
- 2024-01-18 CN CN202410073143.9A patent/CN117584910B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104309599A (en) * | 2014-09-26 | 2015-01-28 | 同济大学 | Electro-hydraulic brake system |
| CN106864440A (en) * | 2017-01-20 | 2017-06-20 | 南京航空航天大学 | A kind of self-boosting type brake pedal feel analogue means |
| CN206456358U (en) * | 2017-01-20 | 2017-09-01 | 南京航空航天大学 | A kind of self-boosting type brake pedal feel analogue means |
| CN108313037A (en) * | 2018-01-17 | 2018-07-24 | 浙江零跑科技有限公司 | A kind of split type pedal sense simulator and the method using its adjusting pedal sense |
| US20210261109A1 (en) * | 2020-02-26 | 2021-08-26 | ZF Active Safety US Inc. | Vehicle brake system |
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| CN112776786A (en) * | 2021-01-29 | 2021-05-11 | 山东交通学院 | Drive-by-wire braking system with redundancy function |
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| Publication number | Publication date |
|---|---|
| CN117584910B (en) | 2024-03-26 |
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