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:
Jun. 30, 2015
Filed:
Oct. 18, 2011
Holger Rapp, Ditzingen, DE;
Helmut Clauss, Eberdingen, DE;
Wolfgang Stoecklein, Waiblingen, DE;
Bernd Berghaenel, Illingen, DE;
Marco Beier, Stuttgart-Feuerbach, DE;
Changyi Wang, Kornwestheim, DE;
Holger Rapp, Ditzingen, DE;
Helmut Clauss, Eberdingen, DE;
Wolfgang Stoecklein, Waiblingen, DE;
Bernd Berghaenel, Illingen, DE;
Marco Beier, Stuttgart-Feuerbach, DE;
Changyi Wang, Kornwestheim, DE;
Robert Bosch GmbH, Stuttgart, DE;
Abstract
The invention relates to a fuel injector for injecting fuel into the combustion chamber of an internal combustion engine, comprising a nozzle needle () which is able to perform stroke motions and by the stroke motion of which at least one injection opening can be exposed or closed, and further comprising a control valve () for controlling the stroke motion of the nozzle needle () in that, depending on the respective switch position of the control valve (), hydraulic pressure applied in closing direction to the nozzle needle () in a control chamber () is altered, and further comprising a sensor array () for detecting the needle closing time. According to the invention, the sensor array () is arranged in the low-pressure area of the fuel injector in a space () which is sealed with respect to the fuel-conducting area (). Sealing of the space () is effected by a membrane () made of a fuel-resistant, electrically conductive material, allowing the membrane () to also be utilized for implementing a ground connection.