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Wire control brake system driven by two fully decoupled motors

A dual-motor drive, brake-by-wire technology, used in brakes, brake transmissions, transportation and packaging, etc., can solve the problems of increasing system energy consumption and manufacturing costs, increasing system control difficulty, and high motor performance requirements, meeting the requirements. The effect of reducing, reducing energy consumption and improving safety

Inactive Publication Date: 2016-06-15
TSINGHUA UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the system uses two sets of motor-ball screw mechanisms and two brake master cylinders, the structure is complex, which increases system energy consumption and manufacturing costs; the mechanical connection between the motor and the pedal increases the difficulty of system control, and the performance requirements of the motor higher

Method used

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  • Wire control brake system driven by two fully decoupled motors

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Embodiment Construction

[0017] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

[0018] like figure 1 As shown, the present invention includes a brake master cylinder 1, a hydraulic control system 2, a hydraulic booster mechanism 3, a dual-motor booster mechanism 4, a pedal simulator 5, an oil pot 6 and a central controller 7.

[0019] The brake master cylinder 1 includes a master cylinder housing 11, two master cylinder pistons 12 are arranged at intervals in the master cylinder housing 11, between the two master cylinder pistons 12 and between the master cylinder piston 12 and the closed end of the master cylinder housing 11 The master cylinder piston chambers 13 are respectively formed, and the piston return springs 14 are respectively arranged in the two master cylinder piston chambers 13 .

[0020] The hydraulic brake unit 2 is respectively connected to the piston chambers 13 of the two master cylinders through two brake pip...

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Abstract

The invention relates to a wire control brake system driven by two fully decoupled motors. The wire control brake system comprises a brake main cylinder, a hydraulic control unit and a hydraulic force increasing mechanism. The main cylinder is connected with the hydraulic control unit through brake pipelines. The hydraulic force increasing mechanism comprises a force increasing chamber shell body, a pedal push rod and a main cylinder piston push rod. The force increasing chamber shell body is internally provided with a piston cylinder. The back end of the pedal push rod is rotationally connected with a brake pedal. The front end of the pedal push rod is provided with a first force increasing chamber piston. The back end of the main cylinder piston push rod is provided with a second force increasing chamber piston. The first force increasing chamber piston and the second force increasing chamber piston are both slidably arranged in the piston cylinder. A first force increasing chamber piston cavity is formed between the first force increasing chamber piston and the second force increasing chamber piston. A second force increasing chamber piston cavity is formed between the second force increasing chamber piston and the sealed end of the piston cylinder. The front end of the main cylinder piston push rod extends into the brake main cylinder.

Description

technical field [0001] The invention relates to a full-decoupling dual-motor driven brake-by-wire system, which belongs to the technical field of automobile brakes. Background technique [0002] Due to the depletion of oil and the destruction of the environment, the advantages of energy saving and environmental protection make electric vehicles the main direction of the future development of the automobile industry. In order to improve energy efficiency, save resources, and protect the environment, the automobile industry of various countries is vigorously developing electric vehicles. requirements. In order to achieve a good cooperation with the regenerative braking system of hybrid electric vehicles and electric vehicles, and to make the regenerative braking system recover as much braking energy as possible on the basis of braking safety, firstly, the dependence on the engine vacuum degree should be eliminated, and secondly, Coordinated control with the regenerative brak...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60T13/74
CPCB60T13/745
Inventor 于良耀刘晓辉
Owner TSINGHUA UNIV
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