CONTROL METHOD FOR INTERNAL COMBUSTION DEVICE, AND CONTROL DEVICE FOR INTERNAL COMBUSTION ENGINE

WIPO Patent Application WO/2019/043808

A1

In this invention, during idling while warming up a catalyst, while fixing the mechanical compression ratio of an internal combustion engine at a predetermined low compression ratio, the form of combustion within a cylinder is controlled to stratified combustion, and ignition timing is set to after compression top dead center. During operation other than idling while warming up the catalyst, while varying the mechanical compression ratio of the internal combustion engine according to the stat7e of driving, the form of combustion within the cylinder is controlled to homogeneous combustion, and ignition timing is set to predetermined normal ignition timing in the vicinity of MBT. During idling while warming up the catalyst, after the accelerator pedal has been depressed, if there is a possibility that the depression of the accelerator pedal is returned, restarting idling while warming up the catalyst, the mechanical compression ratio of the internal combustion engine is fixed at a predetermined low compression ratio, while at the same time controlling the form of combustion within the cylinder to a homogeneous combustion, and ignition timing is set to the predetermined ignition timing.

SUZUKI KENJI (JP)
ITOU TOMOKI (JP)
YAMADA YUKIYO (JP)

PCT/JP2017/031059

March 07, 2019

August 30, 2017

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NISSAN MOTOR (JP)

F02D15/02; F02D43/00; F02D45/00

WO2009091077A1	2009-07-23
WO2014196267A1	2014-12-11

JP2017044121A	2017-03-02
JP2006070863A	2006-03-16
JP2007064153A	2007-03-15
JP2012102671A	2012-05-31
JP2010007574A	2010-01-14
JP2008111375A	2008-05-15
JP2010007574A	2010-01-14

See also references of EP 3677762A4

KOBAYASHI, Hiromichi et al. (JP)

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