Device for correcting fuel injection amount of internal...

Details Device for correcting fuel injection amount of internal... Device for correcting fuel injection amount of internal...

Filed on

2007-07-10

Date issued

2007-07-10

Examiner

Argenbright, T. M. (Department: 3747)

Patent Class

Internal-combustion engines

SubClass

Charge forming device

SubSubClass

Including exhaust gas condition responsive means

Other Related Categories

C123S687000, C123S689000, C123S696000, C701S109000

Type

Reexamination Certificate

Status

active

Patent number

11373312

Description

ABSTRACT:
To prevent RPM decrease, misfire, and engine stall by refraining from correcting, the amount of fuel to shift an air-fuel ratio toward a lean side to the extent of exceeding a combustion limit when the internal combustion engine operates at a low load, a control apparatus is provided for controlling operation of an internal combustion engine. The apparatus includes an air-fuel ratio state determiner, a characteristic retainer and a fuel correction amount calculator, in which a coolant temperature coefficient of a coolant temperature coefficient characteristic is set to be smaller than a constant value in a region where a coolant temperature is lower than a constant temperature.

REFERENCES:
patent: 5787868 (1998-08-01), Maki et al.
patent: 6684868 (2004-02-01), Saga
patent: 7117045 (2006-10-01), Hittle et al.
patent: 2003-232248 (2003-08-01), None

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