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. 20, 2005
Filed:
Feb. 27, 2001
Hirohisa Tanaka, Tokyo, JP;
Takahiro Urai, Hiratsuka, JP;
Hirohisa Tanaka, Tokyo, JP;
Takahiro Urai, Hiratsuka, JP;
Moog Japan Ltd., Kanagawa, JP;
Abstract
A fuel injection device is so constructed that fuel fed from a pressure storage chamber to a valve housing () with a nozzle () is led to a needle valve back pressure chamber () through a groove () provided on the peripheral surface of a needle valve (); a fuel pressure in the back pressure chamber () is controlled by opening and closing a pressure regulating port () provided in the valve housing by a pilot valve () so as to move the needle valve, whereby the nozzle is opened and closed. The pressure regulating port is opened and closed by a drive control of the pilot valve with a valve drive unit by means of elongation and contraction of the magnetostrictive rods attributable by the action of an external magnetic field. The magnetostrictive rods, consisting of first and second magnetostrictive rods (and), are axially arranged side by side in parallel to the pilot valve.