CONTROL DEVICE, ENGINE, AND CONTROL METHOD FOR ENGINE - MITSUBISHI HEAVY IND ENGINE & TURBOCHARGER LTD

Title:

CONTROL DEVICE, ENGINE, AND CONTROL METHOD FOR ENGINE

Document Type and Number:

WIPO Patent Application WO/2020/054417

Kind Code:

A1

Abstract:

A control device that, in an engine that comprises a DOC, a DPF, and a heating means that is for heating the DOC and the DPF and includes an exhaust throttle valve, can execute forced regeneration processing in which the DPF is heated to remove PM that accumulates in the DPF. The control device comprises a flow rate estimation part that estimates the intake flow rate of a combustion gas that is fed into a cylinder of the engine. During the forced regeneration processing, the flow rate estimation part estimates a first intake flow rate that is the intake flow rate during the forced regeneration processing from first state quantities that indicate the operating state of the engine and include the rotational speed of the engine and from the degree of opening of the exhaust throttle valve on the basis of a first relationship that represents the relationship between the first intake flow rate and the first state quantities and the degree of opening of the exhaust throttle valve.

Inventors:

SATO DAISUKE (JP)
YAMADA TOMOHIDE (JP)
KITA RYUJI (JP)
NAKANO HIROKI (JP)

Application Number:

PCT/JP2019/033682

Publication Date:

March 19, 2020

Filing Date:

August 28, 2019

Export Citation:

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Assignee:

MITSUBISHI HEAVY IND ENGINE & TURBOCHARGER LTD (JP)

International Classes:

F01N3/023; F02D45/00; F01N3/033; F02D9/04; F02D43/00; F02M26/52

Foreign References:

JP2004100516A	2004-04-02
JP2007321705A	2007-12-13
JP2010270658A	2010-12-02
JP2011058379A	2011-03-24
JP2008215168A	2008-09-18
JP2003206724A	2003-07-25
JP2004353529A	2004-12-16
JPS55142942A	1980-11-07

Other References: