Patent ID: 9133811
Filing Date: 2015-09-15
Classification: F02D,F02N,Y02T

Abstract:
1. A method of controlling start-up of an internal combustion engine that has a throttle for controlling an intake air amount and performs the start-up through cranking, the method comprising: detecting cranking initiation of the internal combustion engine; detecting an atmospheric pressure at the time of cranking initiation of the internal combustion engine; setting an initial opening based on the atmospheric pressure at the time of cranking initiation, wherein the initial opening is narrower than a predetermined target idle opening; controlling a throttle opening of the throttle to the initial opening at the time of cranking initiation; and starting to increase the throttle opening of the throttle from the initial opening toward the predetermined target idle opening at a predetermined timing after cranking initiation, wherein the initial opening is set to a lower value as the atmospheric pressure increases.