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Method for Operating Automated Parking Brake

A parking brake and actuator technology, applied in the direction of brakes, automatic starting devices, brake transmission devices, etc., can solve the problems that cannot be guaranteed

Active Publication Date: 2018-02-02
ROBERT BOSCH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although there is a pressure sensor in the system, it only measures the pressure in the master brake cylinder
Whether the brake pressure actually acts on the rear axle is therefore not guaranteed

Method used

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  • Method for Operating Automated Parking Brake
  • Method for Operating Automated Parking Brake
  • Method for Operating Automated Parking Brake

Examples

Experimental program
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Effect test

Embodiment Construction

[0045] figure 1 A schematic sectional view of a braking device 1 for a vehicle is shown. The braking device 1 here has an automated parking brake 13 (also referred to as automatic parking brake or automated parking brake, APB for short), which can be activated by means of an electromechanical actuator. 2 (electric motor) to apply the clamping force used to hold the vehicle in place. For this purpose, the electromechanical actuator 2 of the parking brake 13 shown drives a spindle 3 , in particular a threaded spindle 3 , which is supported in the axial direction. On its end facing away from the actuator 2 , the spindle 3 is provided with a spindle nut 4 , which bears against the brake piston 5 in the applied state of the automated parking brake 13 . superior. In this way, the parking brake 13 transmits force to the brake linings 8 , 8 ′ or the brake disk 7 . In this case, the spindle nut bears against the inner end face of the brake piston 5 (also referred to as the rear sid...

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PUM

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Abstract

A method for operating an automated parking brake in a motor vehicle with a hydraulic actuator for generating a hydraulic force component and an electromechanical actuator for generating an electromechanical force component, includes overlaying the hydraulic force component and the electromechanical force component to achieve a total clamping force for a parking brake process. The method further includes setting, on occurrence of a first condition, a first hydraulic pressure level, and setting, on occurrence of a second condition, a second hydraulic pressure level. The method also includes holding substantially constant the set first hydraulic pressure level with the hydraulic actuator until the occurrence of the second condition.

Description

technical field [0001] The invention relates to a method for operating an automated parking brake in a motor vehicle with a hydraulic actuator for generating a hydraulic force component and an electromechanical force component for generating an electromechanical force component. An electromechanical actuator in which the hydraulic and electromechanical force components are superimposed for obtaining a total clamping force for the parking braking process, characterized in that, when a first condition exists, the setting determining a first hydraulic pressure level and setting a second hydraulic pressure level when a second condition exists, wherein the set first hydraulic pressure level is maintained substantially constant by means of said hydraulic actuator, until the second condition exists. Background technique [0002] Patent application DE 10 2015 208 165 A1 is known from the prior art, for example. This document relates to a method for carrying out a parking braking p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60T13/74B60T7/12
CPCB60T7/12B60T13/746B60T7/122B60T13/662B60T13/686B60T13/741B60T2201/06B60T8/172B60T8/245
Inventor E.曼赫茨H.沃尔夫
Owner ROBERT BOSCH GMBH
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