CONTROLLER OF INTERNAL COMBUSTION ENGINE

Japanese Patent JP3677954

B2

PROBLEM TO BE SOLVED: To optimize a switching timing of a valve overlap corresponding to a combustion mode, and to prevent the deterioration in combustion, by varying a valve overlap amount switching timing corresponding to the combustion mode, between a case of a switching from the homogenous combustion to the stratified combustion, and a case of an inverse switching.
SOLUTION: During the operation of an engine, a driver demand torque is determined in reference to a map on the basis of an accelerator opening and an engine speed in a control unit 20, and then an engine demand torque is added thereto, to calculate a target torque. A combustion mode is then determined from a map prescribing the combustion mode with the engine speed and the target torque as parameters. A switching timing of the valve overlap amount adjusted by a variable valve timing device 13 corresponding to the determined combustion mode in a case when the stratified combustion is switched to the homogenous combustion, is controlled to be earlier than that in a case when the homogenous combustion is switched to the stratified combustion. Whereby the proper combustion can be achieved at all times.

WO/2020/060795	OIL RESERVOIR FOR CAMSHAFT PHASER
JP3986331	Internal combustion engine valve timing controller
WO/2011/098321	SINTERED STATOR-COVER UNIT AND CAMSHAFT ADJUSTER

Masayuki Yasuoka

JP19669597A

August 03, 2005

July 23, 1997

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Nissan Motor Co., Ltd

F01L1/344; F02D13/02; F02D41/02; F02D41/04; F02D41/30; F02B17/00; F02D43/00; (IPC1-7): F02D41/04; F02B17/00; F02D13/02; F02D41/02; F02D43/00

JP4183945A
JP2001422U
JP10274064A
JP10274072A
JP10205362A
JP9032651A

Tomijio Sasashima

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