CONTROL DEVICE FOR INTERNAL COMBUSTION ENGINE

WIPO Patent Application WO/2013/054410

A1

The present invention relates to a control device for an internal combustion engine, the control device being provided with an intake air quantity detection means (35), a fuel supply means (21), an air-fuel ratio detection means (43), and an exhaust gas recirculation means (50). In the present invention, when a first accuracy (A1) calculated on the basis of the detection accuracy (Aafm) of the intake air quantity detection means and the fuel supply accuracy (Ainj) of the fuel supply means is higher than a second accuracy (A2) calculated on the basis of the detection accuracy (Aafs, Aaft) of the air-fuel ratio detection means, the quantity of exhaust gas to be introduced into a combustion chamber by the exhaust gas recirculation means is controlled such that the intake air quantity detected by the intake air quantity detection means matches the target value thereof. Meanwhile, in the present invention, when the first accuracy is equal to or lower than the second accuracy, the quantity of the exhaust gas to be introduced into the combustion chamber by the exhaust gas recirculation means is controlled such that the air-fuel ratio detected by the air-fuel ratio detection means matches the target value thereof.

JP2001082136

EXHAUST EMISSION CONTROL METHOD FOR DIESEL ENGINE

AOYAGI SHINSUKE (JP)

PCT/JP2011/073503

April 18, 2013

October 13, 2011

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TOYOTA MOTOR CO LTD (JP)
AOYAGI SHINSUKE (JP)

F02M25/07

JPH1182096A

1999-03-26

PROSPEC PATENT FIRM (JP)
Patent business corporation Pros Peck patent firm (JP)

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