Piston pump for automobile brake system

A technology of automobile braking system and plunger pump, which is applied in the direction of brakes, pumps, pumping devices for elastic fluids, etc., which can solve the problems of increased manufacturing difficulty and cost, low oil discharge efficiency, and accelerated star seal rings Problems such as aging and breakage can be solved, and the effects of improving motion stability, oil absorption efficiency, and oil absorption efficiency can be achieved.

A technology of automobile braking system and plunger pump, which is applied in the direction of brakes, pumps, pumping devices for elastic fluids, etc., which can solve the problems of increased manufacturing difficulty and cost, low oil discharge efficiency, and accelerated star seal rings Problems such as aging and breakage can be solved, and the effects of improving motion stability, oil absorption efficiency, and oil absorption efficiency can be achieved.

CN103661336BActive Publication Date: 2017-04-19WANXIANG QIANCHAO SHANGHAI AUTOMOTIVE SYST +1
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  • Piston pump for automobile brake system
  • Piston pump for automobile brake system
  • Piston pump for automobile brake system

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Embodiment Construction

[0058] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0059] Such as figure 1 A plunger pump for an automobile braking system is shown, including: motor eccentric bearing 10, motor shaft 11, valve block 12, pump oil outlet cavity 13, back pressure cavity 16, active pressurized oil passage 19, star-shaped The sealing ring 20, the pump guide sleeve 21, the pump inlet assembly 23, and the pump plunger assembly 24; the outer circumference of the pump guide sleeve 21 is interference-fitted with the valve block 12, and the inside is fitted with a gap with the plunger 9; the pump-in The oil port assembly 23 is connected to the pump plunger assembly 24; the ...

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Abstract

The invention discloses a plunger pump for an automobile braking system. The plunger pump for the automobile braking system comprises a motor eccentric bearing, a motor shaft, a valve block, a pump oil outlet cavity, a backpressure cavity, an active pressurization oil passing channel, a star-shaped sealing ring, a pump guide sleeve, a pump oil inlet assembly and a pump plunger assembly. The plunger pump is composed of the independent pump oil inlet assembly, the pump plunger assembly, the star-shaped sealing ring, the pump guide sleeve and the valve block, the active pressurization oil passing channel is formed between a low-pressure cavity and the backpressure cavity of the plunger pump, when brake fluid of the low-pressure cavity is compressed by pushback movement of a plunger rod assembly, the brake fluid provides active pressurization for oil absorption of the plunger pump through the active pressurization oil passing channel, and therefore the efficiency of the pump is improved.

Description

technical field [0001] The invention belongs to the field of automobiles, and in particular relates to a plunger pump for an automobile braking system with improved pump efficiency. Background technique [0002] As an anti-lock braking system that improves vehicle stability, ABS greatly improves the safety of driving. The plunger pump is an extremely important part of the system, which is used to decompress the wheels and flow into the ABS accumulator. The fluid is pumped back to the master cylinder. The efficiency of the plunger pump directly affects the drop rate of the brake fluid pressure of the wheel, whether it can effectively prevent the wheel from locking, and also affects the braking effect of the car when braking. [0003] Currently, the structure of the known ABS plunger pump includes an independent oil inlet assembly, an oil outlet assembly, a pump compression spring, a plunger rod assembly, a sealing assembly, and a valve block providing an assembly environment...

Claims

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Application Information

Patent Timeline
19 Apr 2017
Publication
CN103661336B
IPC
B60T8/40; F04B17/03; F04B53/02; F04B53/14; F04B53/16
Inventors
单东升; 苏干厅