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:
Feb. 14, 2012
Filed:
Aug. 29, 2007
Francois Rossignol, Mornant, FR;
Stephan Amelang, Koenigsbach-Stein, DE;
Friedrich Howey, Ditzingen, DE;
Olivier Charvet, Saint Laurent de Mure, FR;
Tony Dumont, Villeurbanne, FR;
Francois Rossignol, Mornant, FR;
Stephan Amelang, Koenigsbach-Stein, DE;
Friedrich Howey, Ditzingen, DE;
Olivier Charvet, Saint Laurent de Mure, FR;
Tony Dumont, Villeurbanne, FR;
Robert Bosch GmbH, Stuttgart, DE;
Abstract
The invention relates to an injector for injecting fuel into combustion chambers. According to the invention, a valve piston of a control valve is provided with low pressure on both faces thereof. The valve piston is arranged in a valve chamber hydraulically connected to a control chamber and is guided inside a sleeve received in the valve chamber. The valve chamber contains a spring supported on one end against the sleeve and on the other end on the valve piston such that the spring presses the valve piston onto a valve seat and the sleeve onto an opposing bottom surface. The valve piston diameter inside the sleeve corresponds to the effective valve piston diameter at the valve seat.