CONTROL DEVICE FOR INTERNAL COMBUSTION ENGINE AND COMBUSTION CHAMBER WALL TEMPERATURE ESTIMATION METHOD

Japanese Patent JP2018100599

A

PROBLEM TO BE SOLVED: To highly accurately estimate a wall temperature of a combustion chamber during fuel cut in a deceleration operation.SOLUTION: A control device for controlling combustion of an internal combustion engine calculates a difference between an estimation value of a wall temperature of a combustion chamber and a cooling water temperature when fuel cut is started, calculates an integrated value of intake air amount after the fuel cut is started, decreases data on the difference in accordance with an increase in the integrated value of the intake air amount, calculates an estimation value of the wall temperature of the combustion chamber during the fuel cut on the basis of a detection value of the cooling water temperature and the data on the difference, and corrects ignition timing and fuel injection amount on the basis of the estimation value of the wall temperature when fuel supply is resumed from the fuel cut state.SELECTED DRAWING: Figure 2

JP4872970	Internal combustion engine fuel injection system
JP6014011	Engine control system

TOYAMA YUICHI
SAKAGUCHI SHIGEYUKI
MURAI ATSUSHI

JP2016245667A

June 28, 2018

December 19, 2016

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HITACHI AUTOMOTIVE SYSTEMS LTD

F02D45/00; F02D15/02; F02D41/12; F02D41/32

JP2012026372A	2012-02-09
JP2007278096A	2007-10-25
JPH0771304A	1995-03-14
JP2004353490A	2004-12-16

WO2016084188A1

2016-06-02

Moriaki Ogawa
Haruyuki Nishiyama
Mitsuji Sekiya

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