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:
Nov. 08, 2005
Filed:
Apr. 03, 2003
Volkmar Kern, Stuttgart, DE;
Volkmar Kern, Stuttgart, DE;
Robert Bosch GmbH, Stuttgart, DE;
Abstract
A device for injecting fuel into the combustion chamber of an internal combustion engine, a high-pressure accumulator, a pressure booster, and a metering valve. The pressure booster has a working chamber and a control chamber that are separated from each other by an axially moving piston. A pressure change in the control chamber of the pressure booster causes a pressure change in a compression chamber of the pressure booster. The compression chamber communicates with a hydraulic chamber that acts on an injection valve element. The piston that acts on the compression chamber of the pressure booster is provided with control sections that can be used to relieve the pressure in the hydraulic chamber of the injection valve element.