Motor direct-driven brake-by-wire system with main/auxiliary cylinder and brake control method of system

A brake-by-wire and brake control technology, applied in the direction of brake transmission, brakes, vehicle components, etc., can solve problems such as large fluctuations, high motor performance requirements, and long pressure build-up time

Inactive Publication Date: 2018-07-06
JILIN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the defects in the above-mentioned prior art, the present invention proposes a motor direct-drive brake-by-wire system with a master/auxiliary cylinder and a braking control method thereof. The braking module and the single...

Method used

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  • Motor direct-driven brake-by-wire system with main/auxiliary cylinder and brake control method of system
  • Motor direct-driven brake-by-wire system with main/auxiliary cylinder and brake control method of system
  • Motor direct-driven brake-by-wire system with main/auxiliary cylinder and brake control method of system

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specific Embodiment approach

[0079] In order to further illustrate the technical solution of the present invention and the beneficial effects brought by it, in conjunction with the accompanying drawings, the specific implementation of the present invention is as follows:

[0080] The invention provides a motor direct-drive-by-wire brake system with main / auxiliary cylinders, which is composed of a brake pedal operating mechanism, an electronic control unit, an oil storage cup, a dual-chamber master cylinder braking module and a single-chamber auxiliary cylinder braking module.

[0081] The brake pedal operating mechanism is composed of a pedal mechanism, a pedal feeling simulator 12, a first normally closed switch solenoid valve 7 and a first normally open switch solenoid valve 16;

[0082] Such as figure 1As shown, the pedal mechanism is composed of a pedal 1, a displacement sensor 2, a pedal push rod 3, a pedal push rod housing 4, a pedal piston 5 and a first rubber reaction disc 6; wherein the pedal 1 i...

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Abstract

The invention discloses a motor direct-driven brake-by-wire system with a main/auxiliary cylinder and a brake control method of the system. The brake system is braked through combination of a double-cavity main cylinder brake module and a single-cavity auxiliary cylinder brake module and relatively independently controlled by an electronic control unit, the double-cavity main cylinder brake modulecomprises a main cylinder integrated motor, a main cylinder ball lead screw mechanism and a main cylinder brake pressure generation unit, two groups of single-cavity auxiliary cylinder brake components are parallelly connected to form the single-cavity auxiliary cylinder brake module, normally open switch solenoid valves, single-cavity auxiliary cylinder pressurizing units and wheel-brake cylinder execution pipelines are serially connected to form the single-cavity auxiliary cylinder brake components, the main cylinder brake pressure generation unit and the single-cavity auxiliary cylinder pressurizing units generate brake pressure through driving of the integrated motor and transmission of the ball lead screw mechanism, and wheel-brake cylinders are braked and controlled by the solenoidvalves. The system solves the problems that when a single motor drives a main cylinder, the building time of the pressure is long, fluctuation is large, accuracy is poor, and the requirements for performances of the motor are high.

Description

technical field [0001] The invention belongs to the technical field of braking control of intelligent automobiles, and in particular relates to a motor direct-drive-by-wire braking system with a main / auxiliary cylinder and a braking control method thereof. Background technique [0002] With the development of new energy vehicle technology, its requirements for the electrification of vehicles are getting higher and higher, and at the same time, more attention is paid to the safety of vehicles. Therefore, the requirements for the driving, braking and perception of the surrounding environment of the vehicle during driving are getting higher and higher, and the vehicle braking system is an important component to ensure vehicle safety, and its performance is directly related to the vehicle and even the driver and passengers. Therefore, various automobile manufacturers have put forward higher requirements for the braking system. [0003] The traditional automobile braking system ...

Claims

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Application Information

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IPC IPC(8): B60T13/74
CPCB60T13/745
Inventor 李静张振兆韩紫云
Owner JILIN UNIV
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