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:
Sep. 11, 2007
Filed:
Jun. 09, 2004
Peter Boehland, Marbach, DE;
Hans-christoph Magel, Pfullingen, DE;
Sebastian Kanne, Schwaikheim, DE;
Godehard Nentwig, Stuttgart, DE;
Michael Bauer, Gerlingen, DE;
Peter Boehland, Marbach, DE;
Hans-Christoph Magel, Pfullingen, DE;
Sebastian Kanne, Schwaikheim, DE;
Godehard Nentwig, Stuttgart, DE;
Michael Bauer, Gerlingen, DE;
Robert Bosch GmbH, Stuttgart, DE;
Abstract
A fuel injection device for an internal combustion engine, having two valve elements each having a hydraulic control surface acting in the closing direction and associated with a hydraulic control chamber. A control valve influences the pressure in the control chamber, and loading devices act on the valve elements in the opening direction. The valve elements react at different hydraulic opening pressures prevailing in the control chamber. The control valve is able to set at least three different pressure levels in the control chamber: all of the valve elements are closed at a comparatively high pressure level; one valve element is open at a medium pressure level; and all of the valve elements are open at a comparatively low pressure level.