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Power-driven vacuum pump for car braking system

An automobile brake system, electric vacuum pump technology, applied to parts of pumping devices for elastic fluid, pump parts of rotary piston type/oscillating piston type, pumps, etc., can solve frictional heat reduction, high noise, and low Vacuum pumping efficiency and other issues, to achieve the effect of increased ultimate vacuum, reduced noise, and fast speed

Active Publication Date: 2016-04-13
JILIN DONGGUANG AOWEI AUTOMOBILE BRAKE SYST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The invention provides an electric vacuum pump for automobile braking system to solve the existing problems of high noise, friction between the blade and the stator reduces the vacuum pumping efficiency of the vacuum pump, and friction heat reduces the working reliability of the vacuum pump

Method used

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  • Power-driven vacuum pump for car braking system
  • Power-driven vacuum pump for car braking system
  • Power-driven vacuum pump for car braking system

Examples

Experimental program
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Effect test

Embodiment Construction

[0032] Including the motor 1, there are a pump body assembly, a one-way valve assembly, a cam 21, and a connecting rod assembly in the lower casing 4 and the upper casing 3;

[0033] The pump body assembly is composed of an upper cover plate 12, a lower cover plate 7, a sealing ring 8, a rotor 10, blades 9, screws 11, and a rotor shaft 5. There is a hole in the middle of the upper cover plate 12, and there is an annular step inside the edge of the hole. -37, the upper cover plate 12 is radially opened with a through groove 29, the radial depth does not exceed the outer edge of the rotor 10 in the assembled state, the upper end surface of the lower cover plate 7 is opened with an annular groove near the outer edge, and a rectangular sealing ring with a gap 8 Installed in the groove, there is a hole in the middle of the lower cover plate 7, and the inner side has an annular step 2 40, and the lower cover plate 7 is radially opened with a limit groove 39, and the limit groove 39 h...

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Abstract

The invention relates to a power-driven vacuum pump for a car braking system, and belongs to the field of car braking. The power-driven vacuum pump comprises a motor, and a lower shell and an upper shell body are internally provided with a pump body assembly, a one-way valve assembly, a cam and a connecting rod assembly; and single blades are adopted for rotating at a high speed in an annular cavity and are matched with the cam, an air blocking sheet and the one-way valve to move to form a vacuum cavity. The inner wall of an annular cavity formed by the blade and a blocking sheet rotor and the inner wall of an annular cavity formed by the blade, an upper cover plate and a lower cover plate are in clearance fit, friction cannot be generated, heat cannot be generated, long-time running can be achieved, the reliability is improved, and noise is reduced; and air pumping and air discharging are carried out at the same time, the vacuumizing rate is high, air leakage is reduced, and the final vacuum degree of the vacuum pump can be improved.

Description

technical field [0001] The invention belongs to the field of automobile braking and is applied to the braking system of electric vehicles or gasoline vehicles with turbocharged engines to provide a vacuum source for the vacuum boosting braking system. Background technique [0002] With the advancement of automobile technology, turbocharging technology is widely used in gasoline engines of passenger cars, which significantly improves the fuel economy and power performance of automobiles. However, the turbocharged engine will cause insufficient vacuum in the intake manifold of the gasoline engine, which is lower than the vacuum required by the vacuum booster of the braking system, resulting in insufficient braking force and affecting the braking safety performance of the car. Therefore, it is necessary to use an electric vacuum pump as an auxiliary vacuum source to provide an auxiliary vacuum source for the vacuum booster when the vacuum degree of the intake manifold of the ga...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04C18/344F04C25/02F04C29/00B60T17/02
CPCB60T17/02F04C18/344F04C25/02F04C29/00F04C2240/20
Inventor 李文惠柳恩芬刘文彬宋巍孙红旭王纯龙汪炳辰杜鹏王明董景光
Owner JILIN DONGGUANG AOWEI AUTOMOBILE BRAKE SYST
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