The key technology research for brake system of

vehicles application of vacuum booster pump

Abstract

With the development of automobile technology, during braking of the Vehicles,

to enhance the braking effect, safety, stability and comfort, and reduce the driver's

operating strength, a wide range of modern automotive brake systems servo assisted

hydraulic brake, the vacuum booster - brake master cylinder assembly. Over the

course of driving the car, just from the traditional way, will the engine intake

manifold negative pressure produced into a vacuum chamber, because the engine

intake manifold vacuum can generate is limited, as in case of emergency needs

continuous braking, the vacuum booster vacuum chamber is often accumulated

negative pressure, insufficient to meet the braking requirements, so we apply a

vacuum to assist the vacuum chamber to provide sufficient vacuum.

The design of the main vehicle for the application of the brake vacuum pump

system design. Including the vacuum booster design and improvement, the brake

system hydraulic system design and research, the vacuum booster pump data

calculation and design, and automotive braking systems of electric control.

In the vacuum booster design, the reference to the single-mode vacuum booster

chip principle and structure of the vacuum booster in the single-mode chip based on

the three-dimensional design, and then made into two-dimensional cutting projection,

made out the final assembly drawing .

In the hydraulic system design, the main brake master cylinder on the structure

and size of the detailed design and calculations, addition, through access to relevant

information on the brake wheel cylinders, brake and load sensing proportioning valve

to the selection and installation.

In the vacuum pump design, the reference to the single-stage rotary vane vacuum

pump and water ring structure and principle of the two structures on the basis of the

integration and improvement of the final design of the dry rotary vane pump. And