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.
Patent No.:
Date of Patent:
Jan. 25, 2011
Filed:
Jul. 12, 2004
Carsten Detlefs, Ronnenberg, DE;
Heinrich Diekmeyer, Barsinghausen, DE;
Frank-dietmar Lippelt, Barsinghausen, DE;
Joachim Reinhardt, Hannover, DE;
Bernd Strilka, Hannover, DE;
Carsten Detlefs, Ronnenberg, DE;
Heinrich Diekmeyer, Barsinghausen, DE;
Frank-Dietmar Lippelt, Barsinghausen, DE;
Joachim Reinhardt, Hannover, DE;
Bernd Strilka, Hannover, DE;
WABCO GmbH, Hannover, DE;
Abstract
To detect a failure of a compressed air consumer circuit in a compressed air system for vehicles, pressure is continuously measured in compressed air consumer circuits and evaluated in an electronic control unit which compares the pressure values and/or determined negative pressure gradients of the compressed air consumer circuits with a respective threshold value and shuts off an air-consumer circuit if the pressure values and/or negative pressure gradients thereof satisfy a circuit-failure criterion. The circuit-failure criterion is satisfied when the pressure values and/or pressure gradients are below the respective threshold value for a time equal to or longer than the time of a dynamic pressure change or of a dynamic pressure collapse.