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. 21, 2004
Filed:
Aug. 05, 2002
Mahoro Fujita, Perinton, NY (US);
Hermann Breitbach, Crauthem, LU;
Terukazu Nishimura, Fujisawa, JP;
Akihiko Minato, Fujisawa, JP;
Shigehisa Takase, Fujisawa, JP;
Other;
Abstract
An object of the present invention is to obtain a consistently stable needle lift damping effect in an injector for fuel injection. In an injector that relieves fuel pressure inside a pressure control chamber and lifts a needle valve there are provided a damper member that is slidably mounted to the needle valve a damping chamber formed between the damper member and the needle valve a leak passage for extracting and leaking out the fuel in the damping chamber and a stopper member to restrict the lift position of the damper member Damping of the lift of the needle valve is carried out by extracting and leaking out the fuel in the damping chamber through the leak passage The needle valve functions as a guide for the damper member and prevents vibration of the damper member allowing a consistently stable damping effect to be obtained.