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. 30, 2006
Filed:
Jan. 27, 2003
Maike Sander-potz, Legal Representative, Stuttgart, DE;
Wendelin Potz, Legal Representative, Stuttgart, DE;
Peter Boehland, Marbach, DE;
Thomas Kuegler, Korntal-Muenchingen, DE;
Andreas Koeninger, Neulingen-Goebrichen, DE;
Predrag Nunic, Stuttgart, DE;
Maike Sander-Potz, legal representative, Stuttgart, DE;
Wendelin Potz, legal representative, Stuttgart, DE;
Peter Boehland, Marbach, DE;
Thomas Kuegler, Korntal-Muenchingen, DE;
Andreas Koeninger, Neulingen-Goebrichen, DE;
Predrag Nunic, Stuttgart, DE;
Robert Bosch GmbH, Stuttgart, DE;
Abstract
A fuel injection valve for internal combustion engines, having a housing in which an outer valve needle and an inner valve needle guided in it are disposed in a bore. The outer valve needle controls an outer row of injection openings, and the inner valve needle controls an inner row of injection openings, to which rows of injection openings fuel is delivered at an injection pressure through a high-pressure conduit embodied in the housing. A control pressure chamber in the housing can be made to communicate with the high-pressure conduit, and by means of its pressure, a closing force is exerted at least indirectly on the inner valve needle. The high-pressure conduit communicates with a control chamber, by whose pressure a closing force is exerted at least indirectly on the outer valve needle, and the control chamber communicates with the control pressure chamber. A control valve is disposed in a housing, and by means of the control valve, the control chamber can be made to communicate with a leak fuel chamber.