INTERNAL COMBUSTION ENGINE START CONTROL DEVICE AND CONTROL METHOD

摘要

An internal combustion engine 2 is started by being cranked by an electric motor. An internal combustion engine start control device performs a feedback-control of an intake air amount of the internal combustion engine to a target idle intake air amount, learns a feedback correction amount applied in a feedback control, and performs a learning control using a learnt value in parallel with the feedback control. An engine rotation speed is converged to a target idle rotation speed in an early stage by setting an allowable correction range of a feedback correction amount applied before a start of learning of the intake air amount wider than the allowable correction range of the feedback correction amount applied after the start of the learning of the intake air amount.

主权项

1. An internal combustion engine start control device for starting an internal combustion engine by cranking the internal combustion engine by an electric motor, comprising:
a programmable controller programmed to:
perform a feedback-control of an intake air amount of the internal combustion engine to a target idle intake air amount;learn a feedback correction amount applied in the feedback control; andperform a learning control of the intake air amount using a learnt value in parallel with the feedback control; wherein the feedback correction amount is limited within an allowable correction range and the programmable controller is further programmed to set the allowable correction range applied before a start of learning wider than the allowable correction range applied after the start of the learning.