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. 09, 2008
Filed:
Oct. 29, 2004
Klaus Noller, Oppenweiler, DE;
Peter Land, Pettstadt, DE;
Christof Vogel, Bischberg, DE;
Michael Huebel, Gerlingen, DE;
Thomas Gerschwitz, Eberdingen, DE;
Klaus Noller, Oppenweiler, DE;
Peter Land, Pettstadt, DE;
Christof Vogel, Bischberg, DE;
Michael Huebel, Gerlingen, DE;
Thomas Gerschwitz, Eberdingen, DE;
Robert Bosch GmbH, Stuttgart, DE;
Abstract
A fuel injector has a piezoelectric or magnetostrictive actuator, which actuates a valve-closure member cooperating with a valve-seat surface to form a sealing seat. A hydraulic coupler includes a master piston, a slave piston, and a coupler volumeformed in-between. The master piston and the slave piston are axially displaceable with respect to one another. The coupler volume is connected to a compensating chamber via a throttle. A flexible section delimits the compensating chamber at least partially, and the coupler volume, the throttle, and the compensating chamber are filled with a hydraulic medium. At least one spring element directly or indirectly exerts pressure on the flexible section from the outside, via fixed components.