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:
Aug. 25, 1998
Filed:
Aug. 08, 1996
Kazuji Minagawa, Tokoname, JP;
Kiyotoshi Oi, Toyohashi, JP;
Nippondenso Co., Ltd., Kariya, JP;
Abstract
A pressure control valve includes a downstream pressure control valve disposed between a fuel pipe and a fuel rail. An opening-closing valve can be integrally formed with the downstream pressure control valve. A relief valve can be disposed to bypass the downstream pressure control valve. The downstream pressure control valve opens or closes the fuel passage leading to the fuel rail so that fuel pressure in the fuel rail is maintained at a predetermined value. When the engine is stopped, the fuel passage is closed to decrease leakage of fuel from the fuel injector. When the fuel pump is again operated, the by-pass relief valve is opened by the pressure of fuel in the fuel pipe. Thus, fuel is supplied from an upstream side to a downstream side and fuel pressure in the fuel rail is increased rapidly for engine re-start.