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An auxiliary vacuum booster braking device

A technology of braking device and vacuum booster, applied in the direction of braking transmission device, brake, transportation and packaging, etc., can solve the problems of easily damaged electric vacuum pump cost, frequent starting of electric vacuum pump, insufficient vacuum degree, etc., to save energy, brake Fast and powerful, reducing the effect of vacuum changes

Inactive Publication Date: 2016-03-30
HUNAN GEELY AUTOMOBILE COMPONENTS +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The invention mainly solves the technical problem that the vacuum degree of the ordinary vacuum power-assisted braking system is insufficient at plateau or low speed, while the electric vacuum pump of the braking system with an electric vacuum pump needs to be started frequently, is easily damaged, and the cost of the electric vacuum pump is high. An auxiliary vacuum booster brake device with improved vacuum degree, high safety and stability, and low cost

Method used

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  • An auxiliary vacuum booster braking device
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  • An auxiliary vacuum booster braking device

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Effect test

Embodiment 1

[0016] Embodiment 1: A kind of auxiliary vacuum booster braking device of present embodiment 1, is used for automobile vacuum booster 1, as figure 1 As shown, the vacuum booster is connected to the intake manifold 3 of the automobile engine through the vacuum hose 2, and the auxiliary vacuum booster includes a vacuum pump 4, which is connected to the vacuum hose, and the vacuum pump is connected to the belt of the automobile generator; One end of the vacuum hose is connected to the vacuum booster, and the other two ends of the vacuum hose are respectively connected to the engine intake manifold and the vacuum pump. The vacuum hose connected to the engine intake manifold is designed with a one-way Valve Ⅰ5, the outlet of one-way valve I is connected to the engine intake manifold, and a one-way valve II6 is also designed on the vacuum hose connected to the vacuum pump, the outlet of one-way valve II is connected to the vacuum pump, and a vacuum is also designed on the vacuum hose...

Embodiment 2

[0018] Embodiment 2: A kind of auxiliary vacuum booster braking device of this embodiment 2, is used for automobile vacuum booster, as figure 2 As shown, there are cut-off valves designed at both ends of the vacuum storage tank. The stop valve is controlled by the car ECU. The stop valve can be closed when the vehicle is turned off or inactive to maintain the vacuum degree in the vacuum storage tank or reduce the vacuum degree drop, while the vehicle When starting, the ECU of the car first opens the shut-off valve connecting the vacuum storage tank and the vacuum booster, so that the vacuum storage tank and the vacuum booster are connected, and the vacuum degree in the vacuum booster quickly reaches the use requirement, providing vacuum boosting preparation for braking at start , after the engine speed rises, open another shut-off valve, so that the vacuum storage tank communicates with the engine intake manifold and the vacuum pump, and enters the normal vacuuming state. The ...

Embodiment 3

[0019] Embodiment 3: A kind of auxiliary vacuum booster braking device of present embodiment 3, is used for automobile vacuum booster, as image 3 As shown, the auxiliary vacuum booster brake device is designed with a vacuum pressure sensor 9 that can monitor the change of the vacuum degree in the vacuum booster in real time. The vacuum pressure sensor is installed in the vacuum booster. The three-way fork of the vacuum hose and the one-way valve II A proportional valve 10 is designed on the hose between them. The proportional valve is controlled by the automobile ECU. The opening of the proportional valve is controlled by detecting the vacuum degree in the vacuum booster. When the vacuum degree reaches the requirement, the proportional valve is reduced or closed. The opening can reduce the vacuuming load of the vacuum pump, reduce the output power of the engine, and save energy. When the vacuum degree drops, the opening of the proportional valve can be opened or increased to i...

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Abstract

The invention discloses an auxiliary vacuum power-assisted braking device which is applied to a vehicle vacuum booster. The vacuum booster is connected with a suction manifold of a vehicle engine through a vacuum hose. The auxiliary vacuum power-assisted braking device comprises a vacuum pump which is connected on the vacuum hose and connected with a belt of the vehicle engine. The vacuum pump device is additionally arranged on a vacuum pumping pipeline of the suction manifold of an original engine, and two vacuum pumping devices are provided to the vacuum booster, so that when a vehicle runs in high-altitude areas with low air pressure or at a low speed, vacuum degree of the vacuum booster can be increased; and the vacuum pump is connected with the belt of the engine which is directly taken as a power source, so that braking is rapid and powerful, and safety of vehicle running is improved.

Description

technical field [0001] The invention relates to an automobile vacuum boosting braking system, in particular to an auxiliary vacuum boosting braking device which can improve the vacuum degree of the vacuum boosting system and has high safety and stability. Background technique [0002] At present, most of the brake booster systems of cars on the market use vacuum booster, and use the vacuum in the engine as the vacuum source of the vacuum booster. Because the vacuum degree of the engine intake manifold is relatively low in plateau areas or when the engine speed is low Insufficient vacuum in the vacuum booster caused by low vacuum will cause the brake pedal to harden and seriously affect the braking effect. For this reason, some vehicles are equipped with an electric vacuum pump device on the original basis to supplement the lack of vacuum in the vacuum booster, as shown in the Chinese patent No. CN201120516873.X, titled Vacuum Assisted Braking System and Automobile Patent for...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60T13/52
Inventor 刘志龙刘向阳罗显任
Owner HUNAN GEELY AUTOMOBILE COMPONENTS
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