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. 27, 2006
Filed:
Apr. 26, 2002
Christoph Magel, Pfullingen, DE;
Christoph Magel, Pfullingen, DE;
Robert Bosch GmbH, Stuttgart, DE;
Abstract
A fuel injection device for internal combustion engines, including a fuel injector that can be supplied by a high-pressure fuel source, and a pressure intensifying device that has a movable piston is connected between the fuel injector and the high-pressure fuel source. The movable piston separates a chamber connected to the high-pressure fuel source from a high-pressure chamber connected to the injector whereby the fuel pressure in the high-pressure chamber can be varied by filling a return chamber of the pressure intensifying device with fuel or by emptying fuel from the return chamber. A valve is provided with a valve body, which can be moved as a function of the fuel pressure prevailing in the return chamber so that the valve can connect the high-pressure chamber to the chamber. The invention also proposes a pressure intensifying device that is suitable for this purpose.