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:
Nov. 11, 2008
Filed:
Aug. 23, 2007
Uwe Kosiedowski, Owingen, DE;
Martin Bucher, Bermatingen, DE;
Armin Dölker, Friedrichshafen, DE;
Volker Wachter, Mengen-Beuren, DE;
Uwe Kosiedowski, Owingen, DE;
Martin Bucher, Bermatingen, DE;
Armin Dölker, Friedrichshafen, DE;
Volker Wachter, Mengen-Beuren, DE;
MTV Friedrichshafen GmbH, Friedrichshafen, DE;
Abstract
In a method for detecting the opening of a passive pressure limiting valve for releasing fuel from a common rail fuel injection system to a tank with a fuel supply including a throttle wherein, based on a stationary rail pressure present during manual operation, a load reduction is detected when the rail pressure exceeds a first limit value and, as a result, a PWM signal for controlling the suction throttle is temporarily increased, the opening of the pressure limiting valve is recognized if, as a result, the rail pressure exceeds a second limit value and increases still further.