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Braking system with hydraulic assisting force

A brake system and hydraulic power assist technology, which is applied in the direction of brakes, brake transmission devices, vehicle components, etc., can solve the problem of low power boost pressure and achieve the effect of avoiding too low power boost pressure

Active Publication Date: 2007-05-09
BYD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to overcome the problem that the existing hydraulic power-assisted braking system is prone to low power-assisted pressure, and to provide a hydraulic power-assisted braking system that can avoid the problem of low power-assisted pressure

Method used

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  • Braking system with hydraulic assisting force

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Embodiment Construction

[0019] As shown in Figure 1, the hydraulic power-assisted braking system provided by the present invention includes an electronic control unit 1, an oil pump assembly 2, an accumulator 5, a high pressure switch 7, a hydraulic oil pot 12 and an oil circuit, and the electronic control unit 1 is respectively It is electrically connected with the high-pressure pressure switch 7 and the pump oil assembly 2, and the hydraulic oil pot 12 is connected with the pump oil assembly 2. It is characterized in that the oil circuit includes a high-pressure oil circuit 3 and an oil return circuit 4; the high-pressure oil circuit 3 It is connected with the pump oil assembly 2, and is connected with the accumulator 5 and the high pressure switch 7 respectively; the oil return circuit 4 is connected with the hydraulic oil pot 12; the high pressure oil circuit 3 and the oil return circuit 4 are connected through the one-way valve 11 .

[0020] According to the hydraulic power-assisted braking syst...

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Abstract

A brake system with hydraulic boosting is composed of electronic controller unit, oil pump assemblage, energy accumulator, high-pressure pressure switch, hydraulic oil tank and oil channel consisting of high-pressure oil channel, returned oil channel, and one-way valve between said two oil channels for supplementing hydraulic oil from returned oil channel to high-pressure oil channel to avoid over-low boosting pressure.

Description

technical field [0001] The present invention relates to a power-assisted braking system, more particularly to a hydraulic power-assisted braking system. Background technique [0002] As people pay more and more attention to the protection of the natural environment, the research on the pollution-free new energy pure electric vehicles has become a popular direction. Due to the cancellation of the traditional fuel engine, the original vacuum booster loses vacuum and cannot assist braking. [0003] In the prior art, some adopt the mode of using a vacuum pump to obtain the vacuum degree required by the vacuum booster. However, the noise of the vacuum pump is too loud when obtaining vacuum, which brings great difficulties to the control of vehicle noise. [0004] In the prior art, the boost pressure of the hydraulic power steering is also used as a hydraulic source to realize the hydraulic power braking function. For example, CN1451574A discloses a hydraulic power-assisted bra...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60T13/12
Inventor 王国保
Owner BYD CO LTD