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. 05, 2005
Filed:
Mar. 26, 2002
Gerhard Mack, Stuttgart, DE;
Taner Narin, Bamberg, DE;
Holger Rapp, Hemmingen, DE;
Ulrich Kunzi, Winnenden, DE;
Ralf Heinecke, Freiberg/N., DE;
Wilhelm Christ, Ludwigsburg, DE;
Friedrich Boecking, Stuttgart, DE;
Wolfgang Fleiner, Stuttgart, DE;
Manfred Fink, Breitenguessbach, DE;
Gerhard Mack, Stuttgart, DE;
Taner Narin, Bamberg, DE;
Holger Rapp, Hemmingen, DE;
Ulrich Kunzi, Winnenden, DE;
Ralf Heinecke, Freiberg/N., DE;
Wilhelm Christ, Ludwigsburg, DE;
Friedrich Boecking, Stuttgart, DE;
Wolfgang Fleiner, Stuttgart, DE;
Manfred Fink, Breitenguessbach, DE;
Robert Bosch GmbH, Stuttgart, DE;
Abstract
A fuel injection valve for internal combustion engines having a valve body in which a bore is embodied, a valve seat face, at least one injection opening embodied on the end toward the combustion chamber of the bore, and at least one injection opening connecting the bore with the combustion chamber of the engine. A nozzle needle is longitudinally displaceably guided in the bore and on its end toward the combustion chamber it has a sealing face, which cooperates with the valve seat face and thus controls the at least one injection opening. The nozzle needle has a central longitudinal bore, in which an inner needle is disposed that is fixed immovably relative to the valve body. The nozzle needle is guided over at least part of its length on the inner needle, so that the nozzle needle is kept exactly centrally in the bore at all times.