DEVICE AND METHOD FOR SUPPLYING FUEL IN INTERNAL COMBUSTION ENGINE

WIPO Patent Application WO/2015/136745

A1

　The present invention pertains to a device and method for supplying fuel in an internal combustion engine, in which the rate of fluid discharge and fuel injection pressure of a fuel pump are controlled according to the operating state of the internal combustion engine. Provided are a device and method for supplying fuel in an internal combustion engine in which vapor production can be suppressed during idle stop periods while fuel pressure following engine warm-up can be lowered to improve fuel consumption. A device for supplying fuel in an internal combustion engine variably controls fuel pressure in accordance with the working state of the internal combustion engine, the fuel pressure being fed from an electric fuel pump to a fuel injection valve, wherein the electric fuel pump continues to be driven for a predetermined period after fuel injection by the fuel injection valve has been stopped when the internal combustion engine is stopped in a warm-up state, and pressure in the fuel pipes is raised to a fuel pressure for counteracting vapor. Production of vapor during idle stop periods can thereby be suppressed even if fuel pressure following engine warm-up is lowered.

KANDA KOUSUKE (JP)
NAKAMURA YOSHITATSU (JP)

PCT/JP2014/074444

September 17, 2015

September 16, 2014

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HITACHI AUTOMOTIVE SYSTEMS LTD (JP)

F02D41/06; F02D29/02; F02D41/04; F02M37/08; F02M51/02; F02M59/20

JP2013064391A	2013-04-11
JP2010270598A	2010-12-02
JP2014031766A	2014-02-20
JP2001152920A	2001-06-05
JPS5742127U	1982-03-08

OGAWA, Moriaki et al. (JP)
Moriaki Ogawa (JP)

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