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Method for Determining a Triggering Condition for Recalibration of an Automatic Parking Brake

A technique for parking brakes and trigger conditions, applied in the direction of brakes, brake components, brake types, etc.

Active Publication Date: 2015-08-12
ROBERT BOSCH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Thus, for example, due to a large time constant of the brake motor and a very high motor voltage, the motor current switch-on peaks may be incorrectly interpreted as a damping curve, despite the fact that there is a release without damping

Method used

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  • Method for Determining a Triggering Condition for Recalibration of an Automatic Parking Brake
  • Method for Determining a Triggering Condition for Recalibration of an Automatic Parking Brake
  • Method for Determining a Triggering Condition for Recalibration of an Automatic Parking Brake

Examples

Experimental program
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Embodiment Construction

[0022] figure 1 A sectional view of an electromechanical parking brake (automatic parking brake) for a vehicle is shown, which can apply a braking force for immobilizing the vehicle by means of a brake motor 2 which is currently designed as a DC motor. clamping force. Brake motor 2 drives an axially supported spindle 3 , in particular a spindle. On the end of the main shaft 3 facing away from the brake motor 2 , the main shaft is equipped with a main shaft nut 4 , which bears against the inner front or rear side of the brake piston. The spindle nut 4 is displaced in the axial direction during the rotational movement of the brake motor 2 and the resulting rotational movement of the spindle 3 . The spindle nut 4 and the brake piston 5 are mounted in a brake caliper 6 , which engages a brake pad 7 in a caliper-like manner from above. A brake friction layer 8 , 8 ′ is arranged on both sides of the brake lining 7 .

[0023] In the case of an automatic application process of the...

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PUM

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Abstract

A method for determining a triggering condition for recalibration at a predetermined time during a release process of an automatic parking brake with a brake motor configured to generate an electromechanical braking force includes determining a motor current which is expected at the predetermined time.

Description

technical field [0001] The invention relates to a method for determining a triggering condition for a recalibration, a control and / or regulator, and an automatic parking brake system. Background technique [0002] A method for recalibrating an automatic parking brake in a motor vehicle is known from DE 10 2011 004 763 A1. When a fault occurs during the parking brake release process, then a recalibration is performed. Faults can be caused, for example, by voltage disturbances in the vehicle's on-board electrical system. Malfunctions can also occur when the driver attempts to start although the brake has not yet been (sufficiently) released and the release process has therefore not yet ended. In the event of a fault, the brake motor is usually switched off first. If necessary, hydraulic support is required and the brake motor is then activated again in order to continue the release process of the brake piston before starting its own recalibration until the clamping force ge...

Claims

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Application Information

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IPC IPC(8): B60T13/74
CPCG01R31/34B60T17/221B60T13/74B60T13/588B60T13/741B60T13/746B60T17/22F16D55/226F16D65/18F16D2121/04F16D2121/14
Inventor U.苏泽克
Owner ROBERT BOSCH GMBH