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:
Jul. 20, 2004
Filed:
Nov. 13, 2002
Peter Grabandt, Remseck, DE;
Robert Bosch GmbH, Stuttgart, DE;
Abstract
The fuel injection apparatus has a high-pressure fuel pump and a fuel injection valve connected to it for each cylinder of the engine. The high-pressure fuel pump has a pump piston, which is driven in a stroke motion by the engine and defines a pump working chamber, which is connected by means of a line to a pressure chamber of the fuel injection valve that is disposed separate from the high-pressure fuel pump in the engine and has an injection valve member, which is used to control at least one injection opening and can be moved by the pressure prevailing in the pressure chamber in an opening direction, counter to a closing force, in order to unblock the at least one injection opening. An electrically actuated control valve is provided in the fuel injection valve and at least indirectly controls a connection of the pump working chamber to a relief chamber, which can store pressurized fuel diverted by the control valve when this valve is open.