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Fixed-frequency pressure-regulating type anti-lock braking method for vehicle master cylinder

An anti-lock brake and pressure-regulating technology, which is applied to brakes, vehicle parts, brake transmissions, etc., can solve problems such as redesign, achieve cost savings, good anti-lock brake effects, and improve driving safety Effect

Inactive Publication Date: 2018-09-07
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although its structure has obvious advantages compared with the traditional ABS system, the control strategy needs to be redesigned to realize the ABS function

Method used

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  • Fixed-frequency pressure-regulating type anti-lock braking method for vehicle master cylinder
  • Fixed-frequency pressure-regulating type anti-lock braking method for vehicle master cylinder
  • Fixed-frequency pressure-regulating type anti-lock braking method for vehicle master cylinder

Examples

Experimental program
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Effect test

Embodiment

[0039] Such as figure 1 As shown, this embodiment provides a vehicle anti-lock braking master cylinder constant-frequency pressure regulation strategy based on the integrated electronic hydraulic braking system. The control strategy requires the master cylinder piston to move back and forth, so that the master cylinder hydraulic pressure does not Stop repeating raising and lowering. When a wheel cylinder needs to be depressurized, and the hydraulic pressure of the wheel cylinder is greater than the hydraulic pressure of the master cylinder, the solenoid valve corresponding to the wheel cylinder is opened, otherwise it is closed. Similarly, when a wheel cylinder needs to be boosted and the hydraulic pressure of the wheel cylinder is lower than the hydraulic pressure of the master cylinder, the solenoid valve corresponding to the wheel cylinder is opened, otherwise it is closed.

[0040] When the vehicle brakes, if the speed of the vehicle is higher than the linear velocity of e...

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PUM

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Abstract

The invention relates to a fixed-frequency pressure-regulating type anti-lock braking method for a vehicle master cylinder. The fixed-frequency pressure-regulating type anti-lock braking method comprises the following steps that (1) a master cylinder piston is controlled to move back and forth to enable hydraulic pressure of the master cylinder to fluctuate; (2) whether wheel cylinders need to besupercharged or depressurized or not is judged, and corresponding solenoid valves of the wheel cylinders are opened or closed; and (3) the current vehicle speed is monitored in real time, and when thevehicle speed is less than 5m / s, an ABS stops functioning to prevent locking. Compared with the prior art, the fixed-frequency pressure-regulating type anti-lock braking method for the vehicle mastercylinder has the advantages of compact structure, good anti-locking effect and the like.

Description

technical field [0001] The invention relates to the technical field of automobiles, in particular to a vehicle master cylinder fixed-frequency voltage-regulating brake anti-lock method. Background technique [0002] The promotion and popularization of new energy vehicles, especially electric vehicles, has promoted the development of the brake system in the direction of brake-by-wire, which is not only consistent with the development trend of modern automobiles towards modularization, integration, and mechatronics, but also in line with the development of automobiles for braking. New requirements of the system. [0003] Brake-by-wire systems can be divided into two categories, electro-hydraulic brakes (EHB) and electro-mechanical brakes (EMB). Among them, EHB replaces some mechanical parts in the traditional braking system with electronic components, and still retains the original mature and reliable hydraulic braking system to ensure the reliability of the braking system; a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60T8/1755B60T8/40B60T13/16B60T13/66B60T13/68
CPCB60T8/1755B60T8/17551B60T8/409B60T13/161B60T13/662B60T13/686
Inventor 熊璐杨兴韩伟余卓平
Owner TONGJI UNIV