Motor driven electro-hydraulic brake (EHB) system with main cylinder improved

A technology of hydraulic braking and motor drive, which is applied in the direction of brakes, braking transmission devices, transportation and packaging, etc., which can solve the problems of difficult manufacturing process, complex mechanical structure, unreasonable layout, etc., and achieve reasonable layout, simple and compact structure , The effect of easy process

Active Publication Date: 2017-06-27
JILIN UNIV
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  • Abstract
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  • Application Information

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Problems solved by technology

For example: "An improved master cylinder dual-motor driven electronic hydraulic brake system" patent (application number is 201520159018.6, publication number is CN205044723U, publication date is 2016.02.24), although this system has many advantages, but still There are some disadva

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  • Motor driven electro-hydraulic brake (EHB) system with main cylinder improved

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Embodiment Construction

[0044] The specific content and its implementation mode of the present invention are further described below in conjunction with the embodiment shown in the accompanying drawings. This embodiment is only an example in the technical solution of the present invention, and cannot be interpreted as a limitation to the technical solution of the present invention.

[0045] The invention includes a brake control unit, a mechanical pedal feeling simulator, a modified brake master cylinder 8, a motor power-assisted braking device, an electronic control unit ECU35, a liquid storage tank 18, a solenoid valve and a sensor.

[0046] The modified brake master cylinder 8 has three hydraulic chambers in total: the master cylinder front chamber 11 , the first working chamber 14 and the second working chamber 21 . The front chamber of the master cylinder is connected to the liquid storage tank 18 through a normally closed solenoid valve 12. When the brake system starts to work, the oil is pushed...

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Abstract

The invention discloses a motor driven electro-hydraulic brake (EHB) system with a main cylinder improved. The motor driven EHB system comprises a brake control unit, a mechanical pedal feeling simulator, the modified brake main cylinder, a motor power brake device, an ECU, a liquid storage tank, an electromagnetic valve and a sensor. A working front cavity of the brake main cylinder is connected with a pedal push rod. During braking, front cavity oil liquid is pushed into the liquid storage tank through the normally-closed electromagnetic valve. A second working cavity of the brake main cylinder is connected with the motor power brake device. Meanwhile, a first working cavity and the second working cavity pass through an ABS/ESC module to be in hydraulic coupling with wheel cylinders. A motor is controlled to rotate to drive a ball screw mechanism so as to push a piston to move, and precise adjustment to the wheel cylinder pressure of all wheels can be achieved. By adoption of the motor driven EHB system, complete decoupling of a brake pedal and the hydraulic brake system is achieved, and a regenerative brake system can fully utilize the motor for braking to maximally recover brake energy; and regenerative braking force and hydraulic braking force are cooperatively controlled, and the requirements of various different working conditions are met.

Description

technical field [0001] The invention belongs to the technical field of automobile braking systems, and in particular relates to an electronic hydraulic braking system which has a motor-assisted braking function and is suitable for regenerative braking automobiles. Background technique [0002] With the rapid development of the economy and the gradual improvement of people's living standards, the number of cars is also increasing rapidly. But at the same time, energy and environmental issues are becoming increasingly prominent, and new energy and energy-saving vehicles have become an important direction for the development of the automotive industry. [0003] Compared with traditional vehicles, the main advantages and characteristics of new energy vehicles are to provide power sources other than internal combustion engines, improve fuel economy, and improve emission performance at the same time. An important way to improve fuel economy is to introduce regenerative braking. ...

Claims

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Application Information

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IPC IPC(8): B60T13/68B60T13/74
CPCB60T13/686B60T13/745
Inventor 丁海涛张建伟孙鹏飞李犇豆心愿赵庆薛
Owner JILIN UNIV
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