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Method for operating a brake system of a motor vehicle

A technology of braking equipment and automobiles, applied in the field of computer programs, which can solve problems such as large air gaps and poor response characteristics of brakes

Inactive Publication Date: 2008-03-05
ROBERT BOSCH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the same time the response characteristics of the brakes can become poor, so a considerable air gap and therefore a large pedal travel to allow the operating brakes to brake sufficiently must be overcome

Method used

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  • Method for operating a brake system of a motor vehicle
  • Method for operating a brake system of a motor vehicle

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Embodiment Construction

[0014] The servo-supported hydraulic brake system (wheel brake system) 10 for a car shown in FIG. 1 has a brake circuit 1 assigned to the wheel brakes 11, 12 of the front axle VA of the vehicle, and a brake circuit 1 assigned to the rear axle HA. Braking circuit II of the wheel brakes 13,14. A servo pressure source 15 providing the energy required for generating the braking force is connected to the two braking circuits I and II. The brake system 10 therefore has an operating brake which is actuated by an external force. The braking device 10 also includes an auxiliary brake operated by muscle force. The auxiliary brake has a master brake cylinder 17 with a pressure medium reservoir 18 , which can be actuated via a brake pedal 16 . Master brake cylinder 17 is designed as a single circuit, ie it is connected to brake circuit I via line 19 and first valve 20 arranged in line 19 . In the position indicated by the valve 20, the auxiliary brake thus acts only on the wheel brakes...

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Abstract

A method for operating a brake system of a motor vehicle, prefilling taking place to at least partially overcome an air gap of one wheel brake or a plurality of wheel brakes if the air gap of at least one wheel brake is increased, in particular as a result of dynamic influences of the vehicle motion.

Description

technical field [0001] The invention relates to a method, a device and a computer program for driving a brake system of a motor vehicle. Background technique [0002] The electronic brake pre-fill function (electronic break pre-fillEBP) of the service brake overcomes the air gap of the wheel brake by setting the brake friction surface. By overcoming the air gap, the response time of the brake system is shortened when the brake pedal is subsequently actuated. This results in a shorter pressure build-up time and thus a reduction in the braking distance. [0003] A brake system with EBS and a "pre-fill" function and a method for electronic brake regulation are known, for example, from DE 10 2004 030464. In order to activate the EBP function, in the prior art the accelerator had to be released very quickly, from which a possible emergency situation was inferred and followed by safe braking. The overcoming of the air gap is realized by a hydraulic unit, which can be used to se...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60T8/173
CPCB60T8/40B60T8/4072B60T2201/122B60T8/17555
Inventor M·施米特
Owner ROBERT BOSCH GMBH
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