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. 06, 2012
Filed:
Jan. 13, 2010
Matthias Burger, Murr, DE;
Hans-christoph Magel, Reutlingen, DE;
Matthias Burger, Murr, DE;
Hans-Christoph Magel, Reutlingen, DE;
Robert Bosch GmbH, Stuttgart, DE;
Abstract
The invention relates to a fuel injector, in particular a common rail injector, for injecting fuel into a combustion chamber of an internal combustion engine. The fuel injector has a multi-part injection valve element, which is adjustable between a closing position and an opening position and includes a first part and at least one second part that is adjustable relative to the first part. The first and second parts are coupled to one another via a hydraulic coupler volume. According to the invention, it is provided that the first part is guided in the second part, or the second part is guided in the first part, and that the coupler volume communicates with an injector volume via at least one throttle arrangement. The throttle arrangement is embodied such that the volumetric through flow increases only disproportionately little with an increasing pressure difference between the coupler volume and the injector volume.