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Activates a backup circuit for the electric vacuum pump in the event of a controller failure

A technology of electric vacuum pump and backup circuit, which is applied in the direction of brakes, brake safety systems, brake transmission devices, etc., and can solve problems such as discomfort and troubles

Active Publication Date: 2017-03-01
ROBERT BOSCH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, even if the legal regulations on deceleration are guaranteed, the operating force of the braking device due to the failure of the vacuum pump at least makes the driver feel uncomfortable and can also cause annoyance

Method used

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  • Activates a backup circuit for the electric vacuum pump in the event of a controller failure
  • Activates a backup circuit for the electric vacuum pump in the event of a controller failure
  • Activates a backup circuit for the electric vacuum pump in the event of a controller failure

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Embodiment Construction

[0028] figure 1 A functional diagram of the backup circuit 100 according to the present invention when the main control device 140 is functionally ready is shown.

[0029] The backup circuit 100 for activating the electric vacuum pump 200 in the braking force amplifying device 300 has a first signal input terminal 110 for inputting a braking operation signal 111, and a reference signal 121 for inputting the main control device 140 of the electric vacuum pump. The second signal input terminal 120. Among them, for example, an ESP controller can be used as the main control device 140. In addition, the backup circuit also has a signal output terminal 130 for triggering the electric vacuum pump 200. The first signal input terminal 110 and the signal output terminal 130 are connected to each other in such a way that when the signal 111 representing the braking operation is input to the first signal input terminal 110, the signal output terminal 130 outputs a signal 131 for activating ...

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Abstract

The present invention relates to a brake booster system in motor vehicles. It is an equivalent circuit (100) for activation of an electric vacuum pump (200) is proposed in a booster unit (300) comprising a first signal input (110) for supplying a signal representative of a brake actuation signal (111), a second signal input (120) for feeding a reference signal (121) from an ESP control unit (140) and a signal output (130) for driving the electric vacuum pump (200), wherein the first signal input (110) and the signal output (130) are so interconnected with each other, that upon receipt of one of a brake actuation signal representative (111) at the first signal input (110) is an electric vacuum pump (200) is an activating signal (131) is outputted to the signal output (130), wherein the second signal input (120) to the signal output (130) connected so that an output of an activating electrical vacuum pump signal (131) is suppressed in the signal output (130), providing the operational readiness of the ESP control device (140) representing reference signal (121) applied to the second signal input.

Description

Technical field [0001] The invention relates to a braking force amplifying device in an automobile. The invention particularly relates to a backup circuit that activates an electric vacuum pump when the controller fails. Background technique [0002] In modern cars, the brake booster (BKV) supports the driver during braking. With BKV, the operating force required to brake the car is reduced. For this reason, the auxiliary force provided by the BKV is generated in the low-pressure BKV generally used in automobiles by the pressure difference between the atmospheric pressure and the low pressure existing inside the BKV. [0003] Even if the BKV is connected in the middle, the brake pedal acts directly on the master brake cylinder like the brake pedal in a traditional brake system without an amplifier. The master brake cylinder enters the brake hydraulic pressure used for transmitting the braking force into the pipeline system for braking. The pressure of BKV is supported by the ro...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60T13/74B60T17/22
CPCB60T13/52B60T13/662B60T17/02
Inventor M.孔茨T.布吕克斯
Owner ROBERT BOSCH GMBH
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