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:
Dec. 23, 2014
Filed:
Jul. 22, 2011
Applicant:
Johann Graf, Hausen, DE;
Inventor:
Johann Graf, Hausen, DE;
Assignee:
Audi AG, Ingolstadt, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01M 15/04 (2006.01); F01P 5/14 (2006.01); F01P 7/16 (2006.01); F01P 5/12 (2006.01); F01P 11/16 (2006.01);
U.S. Cl.
CPC ...
G01M 15/04 (2013.01); F01P 5/14 (2013.01); F01P 2005/125 (2013.01); F01P 11/16 (2013.01); F01P 7/162 (2013.01); F01P 2031/36 (2013.01); F01P 2025/33 (2013.01);
Abstract
In a method and a device for diagnosing a switchable coolant pump for circulating a coolant in a coolant circuit of an internal combustion engine, an actual value of the cylinder head temperature of the internal combustion engine is measured and the actual value of the cylinder head temperature is compared with a model value of the cylinder head temperature. The functionality of the coolant pump is assessed according to the comparison result.