FUEL SUPPLY SYSTEM AND FUEL PRESSURE REGULATOR

WIPO Patent Application WO/2003/100246

A1

A fuel supply system comprising a fuel pump (4) and a fuel pressure regulator (60) for regulating the pressure of fuel delivered from the fuel pump to a specified level, wherein the fuel pressure regulator (60) comprises a first chamber (62) formed in a case (61) and receiving fuel delivered from the fuel pump (4), a second chamber (63) receiving fuel through the first chamber (62), a fuel limiting means (64) interposed between the first chamber (62) and the second chamber (63) and limiting fuel flowing from the first chamber (62) to the second chamber (63), a pilot valve section (65) which opens to discharge fuel to a fuel tank (2) when the fuel pressure in the second chamber (63) reaches a first set pressure (Pp), and a main valve section (66) which opens to discharge fuel to the fuel tank (2) when the fuel pressure in the first chamber (62) has a second set pressure (Pm) between the first set pressure (Pp) and a specified pressure (Pi). Pressure of fuel being pressure fed to an injector does not drop when the return flow rate decreases.

YOSHIOKA HIROSHI (JP)
KUWADA HISASHI (JP)

PCT/JP2002/005212

December 04, 2003

May 29, 2002

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MITSUBISHI ELECTRIC CORP (JP)
YOSHIOKA HIROSHI (JP)
KUWADA HISASHI (JP)

F02M37/00; F02M37/10; F02M37/22; F02M69/26; F02M69/54; (IPC1-7): F02M37/00; F02M37/10

JPH1089183A	1998-04-07
JPH08232790A	1996-09-10
JPH0285864U	1990-07-06

Miyata, Kaneo c/o Mitsubishi Denki Kabushiki Kaisha (2-3 Marunouchi 2-Chom, Chiyoda-ku Tokyo, JP)

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