Fuel injection control device of internal combustion engine

Details Fuel injection control device of internal combustion engine Fuel injection control device of internal combustion engine

2006-12-05

2006-12-05

Tran, Binh Q. (Department: 3748)

Power plants

Internal combustion engine with treatment or handling of...

By means producing a chemical reaction of a component of the...

C060S284000, C060S286000, C123S447000, C123S458000, C123S467000

Reexamination Certificate

active

07143576

ABSTRACT:
A fuel injection control device of an internal combustion engine includes fuel injection valve control means which calculates a basic fuel injection flow rate which becomes a target air-fuel ratio corresponding to an engine operation state and performs a driving control of the fuel injection valve, a fuel pressure sensor which detects a fuel pressure in the inside of the pressure storage chamber, a discharge amount control valve for controlling a fuel amount supplied to the pressure storage chamber from the high-pressure pump, and fuel pressure control means which controls the discharge amount control valve such that the fuel pressures in the inside of the pressure storage chamber agrees with a preset target fuel pressure, wherein the fuel injection control device includes fuel increase correction means which increases the basic fuel injection flow rate in a state that a rotational speed of the engine falls in a given preset rotational speed region where the minimum discharge flow rate of the high-pressure pump is expected to exceed zero and the fuel pressure in the inside of the pressure storage chamber is higher than the target fuel pressure.

REFERENCES:
patent: 6457453 (2002-10-01), Tanabe et al.
patent: 6722345 (2004-04-01), Saeki et al.
patent: 6755176 (2004-06-01), Takeuchi et al.
patent: 6988487 (2006-01-01), Oono et al.
patent: 2000-303883 (2000-10-01), None

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