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. 07, 2006
Filed:
Aug. 18, 2004
Marco Ganser, Oberägeri, CH;
Markus Tappolet, Schaffhausen, CH;
Andreas Carelli, Zürich, CH;
CRT Common Rail Technologies, AG, Neuhausen am Rheinfall, CH;
Abstract
A fuel injection valve for an internal combustion engine which includes an axially moveable needle-like injection valve membermounted in a tubular housing. A control elementwith a control passageis mounted in the upper end portion of the housing, and a valve elementis mounted for movement below the control element. A control chamberis formed below the valve element, and a control pistonwhich is formed at the upper end of the valve memberbounds the lower side of the control chamber. A throttle passagein the valve element is connected via a throttle constriction between the control passagein the control elementand the control chamber. A throttle inlet, which is formed in the valve elementor in a sleevewhich laterally bounds the control chamber, is connected between a high pressure chamberin the housing and the control chamberwithout passage through an intermediate throttle point. The pressure in the control chamberis thus always higher than the pressure in the control passage