CONTROL DEVICE FOR INTERNAL COMBUSTION ENGINE

Title:

CONTROL DEVICE FOR INTERNAL COMBUSTION ENGINE

Document Type and Number:

Japanese Patent JP2017008770

Kind Code:

A

Abstract:

PROBLEM TO BE SOLVED: To provide a control device for an engine 1 where an air-fuel ratio is feedback controlled on the basis of a detected value (a detected air-fuel ratio) by an air-fuel ratio sensor 106 provided in an exhaust system, for enhancing its controllability by appropriately correcting the detecting deviation of the air-fuel ratio resulting from scavenging.SOLUTION: For example, when the air-fuel ratio sensor 106 is arranged downstream of a collection part of an exhaust manifold 40, the rate (an intake air blow-by rate: a scavenging rate scart) of intake air flowing out to an exhaust port 18 in a valve overlap period for intake/exhaust air to intake air taken into a cylinder 12 is calculated on the basis of the operating condition of the engine 1 (Step ST101: blow-by rate calculating means). The detected air-fuel ratio is corrected according to the scavenging rate scart (Steps ST102-104: detected air-fuel ratio correcting means).SELECTED DRAWING: Figure 6

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Inventors:

YOSHINAGA MASATOMO

Application Number:

JP2015123610A

Publication Date:

January 12, 2017

Filing Date:

June 19, 2015

Export Citation:

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Assignee:

TOYOTA MOTOR CORP

International Classes:

F02D45/00; F02D41/14

Domestic Patent References:

JP2014025355A	2014-02-06
JP2013238111A	2013-11-28
JP2008163862A	2008-07-17

Attorney, Agent or Firm:

Patent Business Corporation Ark Patent Office

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