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1. (WO2018225452) IDLE ROTATION NUMBER CONTROL DEVICE FOR INTERNAL COMBUSTION ENGINE

Pub. No.:    WO/2018/225452    International Application No.:    PCT/JP2018/018469
Publication Date: Fri Dec 14 00:59:59 CET 2018 International Filing Date: Tue May 15 01:59:59 CEST 2018
IPC: F02D 41/22
F02D 9/02
F02D 29/02
F02D 41/08
Applicants: AISAN KOGYO KABUSHIKI KAISHA
愛三工業株式会社
Inventors: MURAKAMI Kenichi
村上 賢一
Title: IDLE ROTATION NUMBER CONTROL DEVICE FOR INTERNAL COMBUSTION ENGINE
Abstract:
An embodiment of the present disclosure relates to an idle rotation number control device for an internal combustion engine comprising a step motor-type flow rate control valve provided in a detour passageway detouring a throttle valve. A control unit compares step numbers for driving the flow rate control valve between the previous time of idle operation and the present time of idle operation, and, if the result of comparison is greater than a predetermined step number determined in advance, drives the flow rate control valve to a reference opening degree determined in advance, and implements an initialize process for aligning the relationship between a step number that is stored and the actual opening degree of the flow rate control valve.