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:
Jan. 08, 2013
Filed:
Jan. 03, 2008
Juergen Frasch, Holzgerlingen, DE;
Heinz-bernd Haiser, Ludwigsburg, DE;
Christoph Butscher, Leonberg, DE;
Hans-christoph Magel, Reutlingen, DE;
Stephan Wehr, Heiligenstadt, DE;
Juergen Frasch, Holzgerlingen, DE;
Heinz-Bernd Haiser, Ludwigsburg, DE;
Christoph Butscher, Leonberg, DE;
Hans-Christoph Magel, Reutlingen, DE;
Stephan Wehr, Heiligenstadt, DE;
Robert Bosch GmbH, Stuttgart, DE;
Abstract
Proposed is a fuel injector for injecting fuel into a combustion chamber of an internal combustion engine. The fuel injector has a housing in which are arranged an injection valve element with a nozzle needle, a pressure boosting device, and a first control valve, and a second control valve. The first control valve controls a control space of the nozzle needle and the second control valve controls a differential pressure space of the pressure boosting device. A first return flow connection is provided for discharging the control quantity of the control space of the nozzle needle, and a second return flow connection is provided for discharging the control quantity of the pressure boosting device. The two return flow connections are arranged on different housing parts of the housing.