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Method and system for brake boosting of vehicle

A technology of brake booster and brake booster, which is applied in the direction of brake safety systems, brakes, and vehicle components, and can solve problems such as difficult calculation of target pressure and difficulty in applying the brake pedal by the driver, so as to improve driving experience and improve Braking performance, the effect of ensuring driving safety

Pending Publication Date: 2021-06-22
ROBERT BOSCH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Only when a sufficient amount of master cylinder pressure is measured from the brake pump, the hydraulic booster failure compensation system (HBC) will start to apply pressure to the driver; pressure needed to achieve the desired deceleration may be too late
Also, when the brake booster fails, the driver may find it difficult to apply the brake pedal to the minimum pressure
Also, it is difficult to calculate the target pressure without measuring the pressure exerted by the driver

Method used

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  • Method and system for brake boosting of vehicle
  • Method and system for brake boosting of vehicle
  • Method and system for brake boosting of vehicle

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Embodiment Construction

[0016] Embodiments of the present invention are further described below in conjunction with the accompanying drawings.

[0017] figure 1 A flow chart showing an embodiment of a method for boosting a vehicle brake according to the present invention, the method 100 includes: detecting the working state of the brake booster of the vehicle during braking (step 110); determining whether the brake booster is in a failed state (step 120); in response to determining that the brake booster is in a normal state, instructing the brake booster to provide brake boost during braking of the vehicle (step 130); and in response to determining that the brake booster is in a failed state state, providing additional brake force boost during braking of the vehicle to achieve the desired deceleration (step 140).

[0018] According to an embodiment of the present invention, the step 140 of providing additional brake force boosting includes: measuring the position of an input rod of the brake booste...

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Abstract

The invention relates to a method and a system for the brake boosting of a vehicle. The method comprises the steps of determing whether a brake booster of the vehicle is in a failure state or not; in response to determining that the brake booster is in the normal state, instructing the brake booster to provide brake boost during the braking of the vehicle; and in response to determining that the brake booster is in the failure state, providing additional brake assist during braking of the vehicle to achieve the desired deceleration. According to the embodiment of the invention, the brake performance of the vehicle can be improved, accurate brake boosting compensation can be provided in time when the brake booster fails, and the driving safety is ensured.

Description

technical field [0001] The invention relates to a method and a system for brake boosting of a vehicle. Background technique [0002] At present, the electromechanical servo booster mechanism for vehicle braking has been applied, and many new energy vehicles have been equipped with this kind of brake booster. For example, Bosch has designed iBooster, an intelligent brake booster product. This brake booster mechanism can integrate various sensors and controllers, use the internal sensors of the mechanism to respond to the driver's braking action, and send the driver The braking action is converted into a signal, and the converted signal is sent to the motor control unit in the brake pump. The motor control unit calculates the torque requirement that the motor should generate, and then the secondary gear unit converts the torque into the booster valve body. The servo braking force will finally drive the amplifying mechanism and finally push the brake pump to start working, rea...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60T17/22B60T7/04B60T13/12
CPCB60T17/22B60T7/042B60T13/12
Inventor B·帕拉尼萨米
Owner ROBERT BOSCH GMBH