高圧燃料系の制御装置

Japanese Patent JP4951380

B2

The present invention relates to reducing exhaust emissions at startup, providing improved fuel pressure control performance in a low-load region, and detecting high-pressure fuel system abnormalities. Disclosed is a high-pressure fuel system control device (203) which includes a high-pressure pump (207) for pressurizing fuel and discharging the pressurized fuel to a fuel rail (205), an injector (204) for injecting the fuel stored in the fuel rail (205), and a fuel pressure sensor (206) for measuring the pressure of the fuel stored in the fuel rail (205), and controls the high-pressure pump (207) and the injector (204) in accordance with an output generated from the fuel pressure sensor (206). The high-pressure fuel system control device (203) includes a homo-elasticity coefficient estimation section (901) for estimating a homo-elasticity coefficient of fuel in accordance with a pressure change which occurs when a fuel discharge amount of the high-pressure pump (207) is not smaller than a predetermined value; a fuel pressure estimation section (903) for estimating fuel pressure within the fuel rail (205) in accordance with the homo-elasticity coefficient and control target values for the high-pressure pump and the injector (204); and a fuel control section (904) for correcting an injection pulse of the injector (204) in accordance with the fuel pressure estimated by the fuel pressure estimation section (903).

JP2009057860	CONTROL DEVICE FOR INTERNAL COMBUSTION ENGINE AND INTERNAL COMBUSTION ENGINE
JP2917617	[Title of Invention] Internal Combustion Engine

Yoichi Iiboshi
Yoshikuni Kurashima
Toshio Hori
Shin Yamauchi

JP2007078117A

June 13, 2012

March 26, 2007

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Hitachi Automotive Systems, Ltd.

F02D41/34; F02D41/22; F02D41/32; F02D45/00

JP2000257478A
JP200548659A
JP2006299947A
JP200716795A
JP9256886A
JP2000303887A
JP11287144A
JP200397366A

Manabu Inoue

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