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:
Jun. 08, 2004
Filed:
Nov. 25, 2002
Walter Egler, Gerlingen, DE;
Giovanni Ferraro, Ludwigsburg, DE;
Hansjoerg Egeler, Fellbach, DE;
Achim Brenk, Kaempfelbach-Bilfingen, DE;
Wolfgang Klenk, Loechgau, DE;
Peter Boehland, Marbach, DE;
Werner Teschner, Stuttgart, DE;
Sebastian Kanne, Stuttgart, DE;
Ingolf Kahleyss, Marbach, DE;
Uwe Gordon, Kemmern, DE;
Manfred Mack, Altheim, DE;
Robert Bosch GmbH, Stuttgart, DE;
Abstract
A fuel injection system, having a fuel injection valve and a control valve, which control valve has a control valve member that is longitudinally displaceable in a control valve bore. A control valve sealing face is embodied on the control valve member; it cooperates with a control valve seat and thus controls the communication between a first pressure space and a second pressure space; the first pressure space communicates with a high-pressure collection chamber. In a valve body, a bore is embodied in which a pistonlike valve needle, with its end toward the combustion chamber, controls the opening of at least one injection opening by executing a longitudinal motion in response to the pressure in a pressure chamber; the pressure chamber communicates with the second pressure space via an inlet conduit. The first pressure space communicates via a throttle with a damping chamber, embodied as a blind bore and otherwise closed off, as a result of which pressure fluctuations that occur upon closure of the control valve are rapidly damped.