A design method of electric vehicle brake booster system
A technology for electric vehicles and brake boosting, which is applied in the directions of brakes, brake transmission devices, and computing, can solve the problems of heavy design workload and difficulty in meeting design requirements of the brake booster system, and achieves extended effective cruising range and improved design. Efficiency, design optimization effect
Active Publication Date: 2019-09-03
FJ MOTOR GRP YUDO NEW ENERGY AUTOMOBILE CO LTD
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Problems solved by technology
[0010] In order to solve the above technical problems, the present invention provides a design method for the brake booster system of electric vehicles, which is used to solve the problems in the prior art that the design workload of the brake booster system of electric vehicles is heavy and it is difficult to meet the design requirements
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[0040] In order to describe the technical content, structural features, achieved goals and effects of the present invention in detail, the following will be described in detail in conjunction with the embodiments and accompanying drawings.
[0041] see figure 1 , an embodiment of the present invention is a method for designing a brake booster system of an electric vehicle. Vacuum tank volume, determine vacuum pump control strategy and vacuum piping layout. Wherein, the automobile brake booster system is arranged between the automobile brake pedal and the hydraulic booster device, the hydraulic booster device is connected to the brake of the car, the pedal force of the brake pedal is output to the hydraulic booster device through the vehicle brake booster system, and the The hydraulic booster drives the car brakes for braking.
[0042]In the process of checking the brake system, the specification parameters of the front and rear brakes of the car are mainly reselected accordi...
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The invention discloses an electric car brake booster system design method. The method comprises steps of checking a brake system, carrying out type selection on a booster, determining the volume of a vacuum tank, determining a vacuum pump control strategy and laying out a vacuum pipeline. When the brake system is checked, basic parameters of an electric car are obtained; when type selection is carried out on the booster, the pedal effort F is ensured to be moderate; the step of determining the vacuum pump control strategy comprises selecting a start-stop control point of a vacuum pump according to a vacuum booster performance curve and a vacuum pump performance curve; and the step of laying out a vacuum pipeline comprises setting a first check valve in a fast-plug joint which is connected with a vacuum booster and setting a second check valve in an extraction opening of the vacuum pump, wherein the vacuum pipeline is connected with the vacuum pump, the vacuum booster and the vacuum tank. According to the electric car brake booster system design method, the design efficiency of electric car brake booster systems is improved, and the safety and reliability of the brake booster systems are improved.
Description
technical field [0001] The invention relates to the technical field of electric vehicles, in particular to a design method for a brake booster system of an electric vehicle. Background technique [0002] In the past two years, environmental and energy issues have become increasingly prominent. With the strong support of the state, major automobile manufacturers have invested heavily in the research and development of new energy vehicles. Most of the developed models are pure electric vehicles and hybrid vehicles, and most of them are secondary research and development based on traditional models. owned. Because the battery of new energy pure electric vehicles is relatively heavy, the load of the whole vehicle changes, and the vacuum boost provided by the engine is lost during braking. Therefore, the brake booster system needs to be re-matched and checked, and the independent electric vacuum pump (traditional car's) needs to be re-matched. The vacuum booster uses the vacuum ...
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IPC IPC(8): G06F17/50B60T13/46
CPCB60T13/46G06F30/15
Inventor 董振刘心文吴贵新
Owner FJ MOTOR GRP YUDO NEW ENERGY AUTOMOBILE CO LTD