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. 17, 2005
Filed:
Jun. 27, 2001
Rainer Haeberer, Bretton, DE;
Markus Ohnmacht, Stuttgart, DE;
Wilhelm Christ, Ludwigsburg, DE;
Ralf Maier, Schwabisch-Gmund, DE;
Stefan Haug, Waldenbuch, DE;
Wolfgang Fleiner, Stuttgart, DE;
Markus Rueckle, Stuttgart, DE;
Rainer Haeberer, Bretton, DE;
Markus Ohnmacht, Stuttgart, DE;
Wilhelm Christ, Ludwigsburg, DE;
Ralf Maier, Schwabisch-Gmund, DE;
Stefan Haug, Waldenbuch, DE;
Wolfgang Fleiner, Stuttgart, DE;
Markus Rueckle, Stuttgart, DE;
Robert Bosch GmbH, Stuttgart, DE;
Abstract
Disclosed is a fuel injection valve including a valve body and a bore, embodied as a blind bore, whose bottom face is oriented toward the combustion chamber, and a conical valve seat having at least one injection port is disposed, is embodied on the bottom face. In the bore, a pistonlike valve member, which is longitudinally displaceable counter to a closing force, is disposed and has a valve member tip, which in the closing position of the valve member comes to rest on the valve seat. A first conical face and a second conical face, disposed toward the combustion chamber toward the first conical face, are embodied on the valve member tip, and the cone angle of the first conical face is smaller than the cone angle of the valve seat, which in turn is smaller than the cone angle of the second conical face. One annular groove is embodied between the first conical face and the second conical face, and an additional encompassing annular groove is disposed on the second conical face and at least partly coincides with the injection ports in the closing position of the valve member, so as to supply all the injection ports uniformly with fuel even if the valve member is off its axis.