Method and apparatus for operating an electromotive parking brake of a motor vehicle, and motor vehicle

Patent metadata

Field	Value
Publication number	US-10486660-B2
Application number	US-201715823653-A
Country	US
Kind code	B2
Filing date	Nov 28, 2017
Priority date	Nov 29, 2016
Publication date	Nov 26, 2019
Grant date	Nov 26, 2019

Abstract

The disclosure relates to a method for operating at least one parking brake of a motor vehicle, which parking brake can be activated and deactivated in an automated manner, wherein, for the purpose of automated operation of the parking brake, state values of the motor vehicle are monitored and compared with prespecifiable conditions, and wherein the parking brake is activated when a first group of the conditions is met and is deactivated when a second group of the conditions is met. It is provided that the parking brake is activated only when all of the conditions of the second group can be successfully checked for compliance or non-compliance with the respective condition.

First claim

What is claimed is:

1. A method for automating operation of at least one parking brake of a motor vehicle, the at least one parking brake configured to be activated and deactivated in an automated manner, the method comprising:
monitoring state values of the motor vehicle;
comparing the state values with predetermined conditions;
automatically activating the at least one parking brake in response to a first group of the predetermined conditions being met; and
automatically deactivating the at least one parking brake in response to a second group of the predetermined conditions being met,
wherein the at least one parking brake is activated only in response to the state values being available for all of the predetermined conditions in the second group of the predetermined conditions.

2. The method according to claim 1 , the monitoring of the state values further comprising:
monitoring at least one of a driving speed of the motor vehicle, a state of an ignition of the motor vehicle, a roadway inclination, an operating state of an accelerator pedal of the motor vehicle, a driver presence, a coupling state of a clutch in a drive train of the motor vehicle, and a switching state of a parking brake switch of the motor vehicle.

3. The method according to claim 1 further comprising:
checking, as the first group of predetermined conditions, whether (i) a driving speed of the motor vehicle is equal to zero and (ii) an ignition of the motor vehicle is switched off.

4. The method according to claim 1 further comprising:
checking, as the second group of predetermined conditions, whether (i) an ignition of the motor vehicle is switched on and (ii) an accelerator pedal of the motor vehicle is operated.

5. The method according claim 1 further comprising:
deactivating the at least one parking brake depending on a position of an accelerator pedal of the motor vehicle and a current roadway inclination.

6. The method according claim 1 further comprising:
checking whether all of the predetermined conditions in the second group of the predetermined conditions can be checked for compliance and non-compliance only in response to a functionality of a parking brake switch of the motor vehicle not being able to be established.

7. The method according claim 1 further comprising:
checking, in response to a predetermined condition in the second group not being able to be successfully checked, a parking brake switch of the motor vehicle for functionality; and
activating the at least one parking brake in response to the functionality being established even though the predetermined condition in the second group is not able to be successfully checked.

8. The method according claim 1 further comprising:
at least one of (i) outputting a warning message and (ii) suppressing activation of the at least one parking brake, in response to a predetermined condition in the second group not being able to be successfully checked and a functionality of the parking brake switch not being able to be established.

9. An apparatus for automating operation of at least one parking brake of a motor vehicle, apparatus comprising:
a controller configured to activate and deactivate the at least one parking brake in an automated manner, the controller being further configured to:
monitor state values of the motor vehicle;
compare the state values with predetermined conditions;
automatically activate the at least one parking brake in response to a first group of the predetermined conditions being met; and
automatically deactivate the at least one parking brake in response to a second group of the predetermined conditions being met,
wherein the at least one parking brake is activated only in response to the state values being available for all of the predetermined conditions in the second group of the predetermined conditions.

10. A parking brake system for a motor vehicle, the parking brake system comprising:
at least one parking brake; and
an apparatus configured to automate operation of the at least one parking brake, the apparatus having a controller configured to activate and deactivate the at least one parking brake in an automated manner, the controller being further configured to:
monitor state values of the motor vehicle;
compare the state values with predetermined conditions;
automatically activate the at least one parking brake in response to a first group of the predetermined conditions being met; and
automatically deactivate the at least one parking brake in response to a second group of the predetermined conditions being met,
wherein the at least one parking brake is activated only in response to the state values being available for all of the predetermined conditions in the second group of the predetermined conditions.

Assignees

• Bosch Gmbh Robert

Inventors

• Mannherz Edith
• Wolff Helmut

Classifications

• B60T7/12 Primary

  for automatic initiation; for initiation not subject to will of driver or passenger {(limiting speed of vehicles other than rail vehicles B60K31/00)} · CPC title

• B60T13/662

  characterised by specified functions of the control system components · CPC title

• B60T8/58

  responsive to speed and another condition or to plural speed conditions · CPC title

• B60T13/74

  with electrical assistance or drive · CPC title

• B60T8/245

  Longitudinal vehicle inclination · CPC title