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:
Apr. 11, 2000
Filed:
Jul. 27, 1999
Applicant:
Inventors:
Uwe Scher, Cremlingen, DE;
Jorn Kahrstedt, Berlin, DE;
Assignee:
Volkswagen AG, Wolfsburg, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01M / ;
U.S. Cl.
CPC ...
731181 ;
Abstract
In order to monitor and compensate for undesirable elongation of a belt or chain drive of an internal combustion engine, a control computer determines the start and time duration of fuel injection and corrects the time duration as a function of the phase relation between the engine crankshaft and a shaft having a cam for controlling fuel injection so that a desired nominal fuel quantity is injected even if belt or chain elongation causes the phase relation between the shafts to be changed.