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. 20, 2005
Filed:
Apr. 23, 2003
Burkhard Boos, Lambsborn, DE;
Stefan Kieferle, Stuttgart, DE;
Matthias Distel, Ostfildern, DE;
Achim Koehler, Ditzingen, DE;
Sascha Ambrock, Gerlingen, DE;
Burkhard Boos, Lambsborn, DE;
Stefan Kieferle, Stuttgart, DE;
Matthias Distel, Ostfildern, DE;
Achim Koehler, Ditzingen, DE;
Sascha Ambrock, Gerlingen, DE;
Robert Bosch GmbH, Stuttgart, DE;
Abstract
The fuel injection system has a high-pressure pump, by which fuel is pumped into a reservoir, with which injectors disposed on cylinders of the engine communicate. A feed pump pumps fuel out of a fuel tank to the high-pressure pump and a fuel metering device triggered by a control unit and disposed between the feed pump and the high-pressure pump controls the fuel quantity delivered to the high-pressure pump. The fuel metering device is formed by a clocking valve, which is opened and closed in pulse-width-modulated fashion by the control unit, and the fuel quantity delivered to the intake side of the high-pressure pump is proportional to the opening duration of the clocking valve.