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:
May. 10, 2005
Filed:
Aug. 23, 2002
Joachim Winter, Korntal-Muenchingen, DE;
Wendelin Potz, Stuttgart, DE;
Maike Sander-potz, Stuttgart, DE;
Gerhard Mack, Stuttgart, DE;
Christoph Buehler, Gerlingen, DE;
Friedrich Moser, Ludwigsburg, DE;
Thomas Kuegler, Korntal-Muenchingen, DE;
Philippe Allio, Montluel, FR;
Peter Boehland, Marbach, DE;
Joachim Winter, Korntal-Muenchingen, DE;
Wendelin Potz, Stuttgart, DE;
Maike Sander-Potz, Stuttgart, DE;
Gerhard Mack, Stuttgart, DE;
Christoph Buehler, Gerlingen, DE;
Friedrich Moser, Ludwigsburg, DE;
Thomas Kuegler, Korntal-Muenchingen, DE;
Philippe Allio, Montluel, FR;
Peter Boehland, Marbach, DE;
Robert Bosch GmbH, Stuttgart, DE;
Abstract
The fuel injection system has one high-pressure fuel pump () with a pump work chamber () and one fuel injection valve (), communicating with the pump work chamber, for each cylinder of the engine. The fuel injection valve () has a first injection valve member (), by which at least a first injection opening () is controlled, and which is movable in an opening direction () counter to a closing force by the pressure generated in the pump work chamber (). Inside the hollow first injection valve member (), a second injection valve member () is guided displaceably, by which at least a second injection opening () is controlled, and which is movable by the pressure prevailing in the pressure chamber () in an opening direction () counter to a closing force; the second injection valve member () is acted upon at least indirectly by the pressure prevailing in a fuel-filled control chamber (), which pressure is generated, as a function of operating parameters of the engine, by a feed pump () such that the second injection valve member () either remains in its closed position, or can open.