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Method and devices for operating a motor vehicle brake device

A technology of braking device and service brake, which is applied in the direction of braking action starting device, manual starting device, automatic starting device, etc., can solve problems such as incompatibility

Active Publication Date: 2009-10-28
WABCO EURO BVBA SPRL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But this does not correspond to the prescribed use of the service brakes

Method used

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  • Method and devices for operating a motor vehicle brake device
  • Method and devices for operating a motor vehicle brake device
  • Method and devices for operating a motor vehicle brake device

Examples

Experimental program
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Embodiment Construction

[0035] figure 1 A device for operating the brakes of a motor vehicle, in particular a commercial vehicle, a truck or a bus, is schematically shown.

[0036]The car has several wheels 10, but only one of them is shown. At least some of these wheels are braked by means of the spring accumulator brake cylinder 12 configured as described above. That is to say, each spring accumulator cylinder 12 has a spring accumulator part 14 for the parking brake and a diaphragm part 16 for the service brake. In order to disengage the spring accumulator brake or the parking brake, the spring accumulator part 14 must be filled with air. This air supply takes place via a compressed air line 18 . In order to engage the parking brake, the spring accumulator portion 14 must be vented. This degassing can likewise take place via the compressed air line 18 .

[0037] Service braking is provided by means of the diaphragm part 16 . If the diaphragm part 16 is inflated, the braking force is applied ...

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PUM

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Abstract

The invention relates to a method for operating a brake device of a motor vehicle, comprising a service brake (16) and a parking brake (14). Upon activation of a rolling brake function (S1), and achieving a full stop of the vehicle, monitoring (S2) of an actuating element occurs with regard as to whether a driver has contact with an actuating element. In order to improve the safety of the rolling brake function, the invention provides that, if the monitoring (S2) finds that the driver has no contact with the actuating element, the parking brake (14) is applied (S3), or a braking pressure (14) is controlled using the service brake (16), the braking pressure corresponding to the maximum braking pressure (S10) that can be generated by the parking brake (14), by means of an electric or electronic brake device (26) for controlling the service brake (16) and the parking brake (14). The invention further relates to a corresponding method, wherein a monitoring (S11) of the vehicle occurs with regard to a possible displacement of the vehicle, and if the monitoring shows that the vehicle has been set in motion, braking is applied (S12) to all wheels of the vehicle that are connected to service brake (16) by means of the control device (26) via the service brake (16). The invention also relates to devices that are configured accordingly.

Description

technical field [0001] The invention relates to a method according to the preamble of claim 1 or 5 for operating a braking system of a motor vehicle having a service brake and a parking brake and a method according to the preamble of claim 10 or 17 corresponding device. Background technique [0002] This type of braking device is used on vehicles with an electronic braking system. Such braking systems usually have a service brake and a parking brake. The service brakes are used during driving operation of the car. It is used to brake a moving vehicle or also to hold the vehicle in a parked position for a short period of time, eg while waiting for lights, at a bus stop or when starting uphill. [0003] Such a braking system also has a so-called parking brake. It is used to prevent the parked car from rolling away for a long time. [0004] Motor vehicles usually have a combined spring accumulator-diaphragm cylinder for switching the parking brake. Such a brake cylinder a...

Claims

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Application Information

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IPC IPC(8): B60T7/10B60T7/12B60T8/32B60T17/18B60T8/40
CPCB60T13/385B60T7/122B60T17/18B60T13/261B60T7/107
Inventor 乌韦·本施亨宁·福斯特约尔格·黑尔默哈特穆特·罗森达尔马歇尔·施洛特曼奥特马尔·施特鲁韦
Owner WABCO EURO BVBA SPRL
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