Controller for internal combustion engine

Details Controller for internal combustion engine Controller for internal combustion engine

2011-03-22

2011-03-22

Huynh, Hai H (Department: 3747)

Internal-combustion engines

Charge forming device

Fuel injection system

C123S511000, C123S479000, C701S107000

Reexamination Certificate

active

07909020

ABSTRACT:
At least one of a petroleum fuel and an alcohol fuel stored in a fuel tank is supplied to an internal combustion engine. Specifically, the fuel in the fuel tank is supplied to an injector by a fuel pump module. The injector injects the fuel into an intake pipe. An ECU adjusts a fuel injection quantity according to an alcohol concentration of the fuel. When the fuel-supply-pressure to the injector is less than or equal to a threshold pressure, the ECU determines the fuel pump module has a malfunction. Especially, the ECU varies the threshold pressure according to the alcohol concentration of the fuel.

REFERENCES:
patent: 5179926 (1993-01-01), Ament
patent: 6125832 (2000-10-01), Toyohara et al.
patent: 7025050 (2006-04-01), Oono et al.
patent: 2010/0071661 (2010-03-01), Joos et al.
patent: 2010-19199 (2010-01-01), None

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