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Integrated pedal feeling simulator with failure protection function

A failure protection and simulator technology, which is applied in the direction of brakes, brake activation devices, transportation and packaging, etc., can solve the problems of large layout space and poor integration, and achieve the effects of ensuring safety, simple and compact structure, and easy integration

Pending Publication Date: 2019-09-13
SOUTH CHINA UNIV OF TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the additional pedal feel simulator, this setup requires a larger layout space and poor integration

Method used

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  • Integrated pedal feeling simulator with failure protection function
  • Integrated pedal feeling simulator with failure protection function
  • Integrated pedal feeling simulator with failure protection function

Examples

Experimental program
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Effect test

Embodiment Construction

[0035] Embodiments of the present invention will be described in further detail below in conjunction with the accompanying drawings.

[0036] Such as figure 1 with Figure 5 As shown, an integrated pedal feeling simulator with fail-safe function includes an integrated cylinder block 8, a brake pedal 1, a push rod 2, and an oil storage cup 7,

[0037] The front and rear of the one-piece cylinder block 8 are respectively fixed with a rear end cover 11 and a front end cover 26 by a gasket 9 and bolts, as Image 6 As shown, the one-piece cylinder 8 is provided with a partition plate 18 that divides the inner cavity into a front chamber and a rear chamber, wherein the rear chamber is called the brake master cylinder chamber 13, and the front chamber is called the brake master cylinder chamber 13, and the front chamber is called Pedal feel simulator chamber 22;

[0038]The front chamber is sequentially provided with a sliding fit of the second piston 21 of the pedal feeling simul...

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Abstract

The invention relates to an integrated pedal feeling simulator with a failure protection function. The integrated pedal feeling simulator comprises a brake pedal, a push rod and a decoupling sleeve, anormally closed solenoid valve, a normally open solenoid valve, front and rear end covers, and an integrated cylinder body, wherein two pedal feeling simulator pistons and two springs play a role inpedal feeling simulation, and two brake master cylinder pistons and two springs play a role in failure protection and recovery. A brake master cylinder transmission cavity is formed between the decoupling sleeve and a first piston rod part of the brake master cylinder; a pedal feeling simulator transmission cylinder is formed between the decoupling sleeve and the first piston of the pedal feelingsimulator, and the opening and closing combination of the solenoid valve enables the pedal feeling simulator transmission cylinder and the brake master cylinder transmission cylinder to act under different working conditions, so that the failure protection function is realized. The integrated pedal feeling simulator not only can ensure that the driver has a good pedal feeling, but also can ensurethat braking force can be manually provided when brake-by-wire fails, and meanwhile, the integrated pedal feeling simulator is simple and compact in structure and convenient to integrate.

Description

technical field [0001] The invention relates to a pedal feeling simulator installed on an electronic hydraulic braking system, in particular to an integrated pedal feeling simulator with fail-safe function. Background technique [0002] With the development of new energy vehicles, the requirements for vehicle braking safety and comfort are getting higher and higher, and the brake-by-wire technology mainly in the form of electro-hydraulic braking and electro-mechanical braking has been gradually developed and applied. In the state of brake-by-wire braking, the driver steps on the brake pedal, and the pedal displacement sensor transmits the displacement signal to the ECU. The ECU judges the driver's braking intention and sends out a control signal to control the braking force source to generate braking force. Due to the decoupling state between the brake pedal and the brake actuator in the brake-by-wire state, the driver cannot get the real pedal feeling, and a pedal feeling s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60T8/40B60T7/04B60T13/68
CPCB60T8/409B60T7/042B60T13/686
Inventor 储文龙魏政君上官文斌蒋开洪
Owner SOUTH CHINA UNIV OF TECH
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