Controller for internal combustion engine

Details Controller for internal combustion engine Controller for internal combustion engine

2006-07-11

2006-07-11

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...

C060S274000, C060S277000, C060S285000

Reexamination Certificate

active

07073321

ABSTRACT:
A controller for an internal combustion engine that accurately diagnoses heating control of a catalytic device as having or not having an abnormality. The controller increases speed of the engine during engine idle to accelerate heating of the catalytic device with exhaust gas discharged from the engine. The controller obtains a total intake air amount by adding up the amount of air that has been supplied to the engine in a predetermined period during execution of the heating control. The controller determines that the heating control has an abnormality when the total intake air amount is less that a total air amount determination value.

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