The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
Oct. 15, 2019

Filed:

Jul. 31, 2017
Applicant:

Robert Bosch Gmbh, Stuttgart, DE;

Inventors:

Edith Mannherz, Weinsberg, DE;

Helmut Wolff, Untergruppenbach, DE;

Assignee:

Robert Bosch GmbH, Stuttgart, DE;

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B60T 8/32 (2006.01); B60T 8/48 (2006.01); B60T 13/66 (2006.01); B60T 13/74 (2006.01); B60T 17/22 (2006.01); B60T 8/172 (2006.01);
U.S. Cl.
CPC ...
B60T 17/221 (2013.01); B60T 8/172 (2013.01); B60T 8/32 (2013.01); B60T 13/662 (2013.01); B60T 13/741 (2013.01); B60T 13/746 (2013.01); B60T 8/4872 (2013.01); B60T 2270/413 (2013.01);
Abstract

A method for determining the functional capability of a brake system with a wheel brake and a movable brake piston includes setting first and second braking forces on the brake piston with a hydraulic pressure generator and an electromechanical actuator, respectively, to set a parking brake force at the wheel brake. The method further includes actuating the actuator to set a third braking force on the brake piston with a value lower than the first and second braking forces. The hydraulic pressure generator is then actuated to set the first braking force after the third braking force is set. The actuator is then actuated to set the second braking force after the first braking force is set. The functional capability of the brake system is determined when the operating current during application of the second braking force temporarily corresponds to an open-circuit current of the actuator.


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