Method for Actuating a Parking Brake in a Vehicle

Patent metadata

Field	Value
Publication number	US-2017190329-A1
Application number	US-201615378735-A
Country	US
Kind code	A1
Filing date	Dec 14, 2016
Priority date	Dec 30, 2015
Publication date	Jul 6, 2017
Grant date	—

Abstract

A method of actuating a parking brake for a vehicle having an electromechanical brake device in a situation whereat driving dynamics state information is not available in the vehicle and whereat a driver operates the parking brake includes producing an electromechanical braking force with a magnitude that is less than a maximum braking force of the parking brake.

First claim

What is claimed is:

1 . A method of actuating a parking brake of a vehicle, the method comprising:
in response to a driver operating a parking brake of a vehicle that has an electromechanical brake device with an electrical brake motor configured to displace a brake piston toward a brake disk in a case whereat driving dynamics state information is not available in the vehicle, producing an electromechanical force via the parking brake, a magnitude of the electromechanical force at a start of the producing of the electromechanical force less than a maximum braking force of the parking brake.

2 . The method of claim 1 , wherein the producing is further in response to a case whereat the vehicle is travelling.

3 . The method of claim 1 , wherein the driving dynamics state information not available in the vehicle includes a speed magnitude of the vehicle.

4 . The method of claim 1 , further comprising:
increasing the electromechanical braking force until a predetermined magnitude for the braking force is reached.

5 . The method of claim 4 , wherein the predetermined magnitude for the braking force is equal to a maximum braking force of the electromechanical brake device

6 . The method of claim 4 , wherein the predetermined magnitude for the braking force is a final force level for the braking force, and is less than a maximum braking force of the electromechanical brake device.

7 . The method of claim 4 , wherein the increasing of the electromechanical braking force includes increasing the electromechanical braking force in stages.

8 . The method of claim 7 , wherein at least one of the stages of increasing the electromechanical braking force is maintained for a predetermined period of time and at a predetermined level.

9 . The method of claim 1 , further comprising:
under predetermined conditions, maintaining the electromechanical braking force after the driver ceases operating the parking brake.

10 . The method of claim 9 , wherein the predetermined conditions include a case whereat a predetermined braking force magnitude has been reached in the electromechanical brake device.

11 . The method of claim 10 , wherein the predetermined braking force magnitude is equal to a maximum braking force of the electromechanical brake device.

12 . The method of claim 10 , wherein the predetermined conditions include a case whereat the predetermined braking force magnitude is maintained for a predetermined minimum period.

13 . The method of claim 9 , wherein the predetermined conditions include a case whereat the vehicle is at a standstill.

14 . A regulation or control unit that, when operatively connected to a vehicle electromechanical brake device with an electrical brake motor configured to displace a brake piston toward a brake disk, is configured to cause the electromechanical brake device to:
in response to a driver operating a parking brake of the vehicle in a case whereat driving dynamics state information is not available in the vehicle, produce an electromechanical force via the parking brake, a magnitude of the electromechanical force at a start of the production of the electromechanical force less than a maximum braking force of the parking brake.

15 . A parking brake for a vehicle with an electrical brake motor configured to displace a brake piston toward a brake disk and a regulating or control unit configured to actuate the parking brake, the parking brake configured to:
in response to a driver operating the parking brake in a case whereat driving dynamics state information is not available in the vehicle, produce an electromechanical force, a magnitude of the electromechanical force at a start of the production of the electromechanical force less than a maximum braking force of the parking brake

Assignees

• Bosch Gmbh Robert

Inventors

• Mannherz Edith
• Baehrle-Miller Frank
• Roters Lars
• Weinum Matthieu
• Sussek Ullrich

Classifications

• B60T2270/416

  Wheel speed sensor failure · CPC title

• B60T2210/12

  Friction · CPC title

• B60T13/741 Primary

  acting on an ultimate actuator · CPC title

• B60T2270/40

  Failsafe aspects of brake control systems · CPC title

• B60T7/042

  by electrical means, e.g. using travel or force sensors · CPC title