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.:

US 7805985 B1

PDF
Full Text
Expired
Date of Patent:
Oct. 05, 2010

Filed:

May. 07, 2008
Applicants:

Günter Friedl, Regensburg, DE;

Carlos Eduardo Migueis, Tegernheim, DE;

Oswald Schumann, Rettenbach, DE;

Inventors:

Günter Friedl, Regensburg, DE;

Carlos Eduardo Migueis, Tegernheim, DE;

Oswald Schumann, Rettenbach, DE;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01M 15/04 (2006.01);
U.S. Cl.
CPC ...
Abstract

In order to diagnose the leakage of an injector (IN) which serves for injecting fuel into the combustion chamber of at least one cylinder (CY) of a combustion engine (CE), it is detected, in an observation time window (OPS) during which the particular injector (IN) of the combustion engine (CE) that is to be tested is deactivated, whether a deviation (DV) of the speed curve (GS) of the combustion engine (CE) has occurred relative to a reference speed curve (GS) which indicates injector leak-tightness. In the event that a deviation (DV) is detected, it is concluded that there is a leakage of the injector (IN).


Find Patent Forward Citations

Friedl, Günter. (2010). Method for diagnosing the leakage of an injector and associated control device (U.S. Patent No. 7805985). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/7805985

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