MOTOR VEHICLE BRAKING SYSTEM HAVING A HYDRAULICALLY ACTUATED SERVICE BRAKING SYSTEM AND AN ELECTORMECHANICALLY ACTUATED BRAKING SYSTEM
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Abstract
The invention relates to a motor vehicle brake system having a hydraulically actuatable service brake system and an electromechanically actuatable brake system, including an operating element HMI, in particular for activating a parking brake function, an electronic control device (EPB-ECU) for activating an electromechanical actuator of the electromechanically actuatable brake system, and an electrohydraulic control unit (HECU) associated with a service brake and serving to control or regulate hydraulically implemented service brake functions, driving stability functions and/or braking assistance functions. It is an aim of the invention to contribute to reducing the stress on parts or components of the brake system. It is proposed that an electronically controlled hydraulic pressure conditioning process is carried out in integrated brake calipers after hydraulic actuation of the brake, it being further provided that the electromechanical brake system generates additional application forces only after the hydraulic pressure conditioning process.
21 Citations
29 Claims
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1-14. -14. (canceled)
- 15. A motor vehicle brake system having a hydraulically actuatable service brake system and an electromechanically actuatable brake system, comprising an operating element for activating a parking brake function, an electronic control unit for activating an actuator of the brake system, and an electrohydraulic control unit which is associated with a service brake and serves to control or regulate service brake functions, driving stability functions and/or braking assistance functions, wherein in order to reduce stress on parts or components of the electromechanical brake system following an automatic or driver-initiated hydraulic brake actuation, and prior to completion of a temporally following electromechanical brake actuation, an electronically controlled hydraulic pressure conditioning process is carried out in at least one operating pressure chamber of an electromechanically actuatable brake caliper.
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29. An operating method for a motor vehicle brake system having a hydraulically actuatable service brake system and an electromechanically actuatable brake system, comprising an operating element for activating a parking brake function, an electronic control unit for activating an actuator of the brake system, and an electrohydraulic control unit which is associated with a service brake and serves to control or regulate service brake functions, driving stability functions and/or braking assistance functions, wherein in order to reduce stress on parts or components of the electromechanical brake system following an automatic or driver-initiated hydraulic brake actuation, and prior to completion of a temporally following electromechanical brake actuation, an electronically controlled hydraulic pressure conditioning process is carried out in at least one operating pressure chamber of an electromechanically actuatable brake caliper, the method comprising brake actuation predetermined by checking with reference to a plurality of different pieces of information, with reference to a balancing of a plurality of pieces of sensor information, in order to evaluate an actual vehicle driving state, and the electronically controlled hydraulic pressure conditioning process takes place temporally after energization of the actuator.
Specification