Intake air flow control system for internal combustion engine

Details Intake air flow control system for internal combustion engine Intake air flow control system for internal combustion engine

F - Mech Eng,Light,Heat,Weapons

02

D

F02D 9/08 (2006.01) F01B 25/00 (2006.01) F02D 31/00 (2006.01) F02D 41/24 (2006.01) F02M 35/108 (2006.01)

Patent

CA 2449147

To provide an intake air flow control system for an internal combustion engine with which it is possible to prevent a rise in cost and to prevent adverse effects on the starting characteristics of the internal combustion engine. At the time of performing a reference position adjustment of an auxiliary intake air flow control valve, when both a first re-reading condition where the absolute value of the difference between a target idling engine speed and a current idling engine speed is smaller than a first threshold and a second re-reading condition where the absolute value of the difference between a calculated intake flow rate and a reference intake flow rate is greater than a second threshold are established, step S5 is performed in which a valve opening corresponding to the reference intake flow rate on a reference characteristic basis is used in place of a valve opening corresponding to the calculated intake flow rate.

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