CONTROL DEVICE FOR INTERNAL COMBUSTION ENGINE AND CONTROL METHOD FOR SAME

Title:

CONTROL DEVICE FOR INTERNAL COMBUSTION ENGINE AND CONTROL METHOD FOR SAME

Document Type and Number:

WIPO Patent Application WO/2023/153365

Kind Code:

A1

Abstract:

The present invention provides a control device for internal combustion engine and a control method for the same which are capable of suppressing a worsening of emissions during fuel cutoff recovery.　The control device for an internal combustion engine performs feedback control of the air-fuel ratio of an internal combustion engine. When combustion is restarted after fuel cutoff in the internal combustion engine, an increased amount of fuel is supplied in a state where air-fuel ratio feedback is stopped, and an air-fuel ratio criterion is set in accordance with the rich-side peak value of the air-fuel ratio after commencement of fuel increase. The present invention is characterized in that when the set air-fuel ratio criterion is met after fuel increase, the air-fuel ratio feedback is commenced.

Inventors:

MOCHIZUKI RYO (JP)
KOBAYASHI MASAKI (JP)

Application Number:

PCT/JP2023/003800

Publication Date:

August 17, 2023

Filing Date:

February 06, 2023

Export Citation:

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Assignee:

HITACHI ASTEMO LTD (JP)

International Classes:

F02D41/04; F02D41/14; F02D45/00

Foreign References:

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