Control apparatus for internal combustion engine

Details Control apparatus for internal combustion engine Control apparatus for internal combustion engine

2011-05-31

2011-05-31

Kirkland, III, Freddie (Department: 2855)

Measuring and testing

Gas analysis

Gas of combustion

C073S114450, C073S114520

Reexamination Certificate

active

07950269

ABSTRACT:
The control apparatus for the internal combustion engine includes: a unit for detecting the change in the alcohol concentration of a fuel supplied to the internal combustion engine including a plurality of cylinders; a unit for detecting an air-fuel ratio variation between the plurality of cylinders; a unit for making the failure diagnosis when the air-fuel ratio variation between the plurality of cylinders exceeds a predetermined threshold value; and a unit for inhibiting the failure diagnosis executed based on the air-fuel ratio variation between the plurality of cylinders when the change in the alcohol concentration is detected.

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