| 摘要 |
PURPOSE:To prevent overlean and improve idle stability by increasing fuel when a fuel system is in high temperature and open loop control is in execution in idling condition of an engine. CONSTITUTION:When increase of fuel amount is completed after starting and engine cooling water temperature is high and open loop control is in execution in idling condition, correcting coefficient FHE made by adding its minimum unit LSB is reflected to the fuel injection time as the correcting coefficient for increasing fuel amount in high temperature idling. That is, during open loop control, high temperature idle increase correcting coefficient FHE is enlarged gradually by its minimum unit LSB. While after feedback control starting, the minimum unit LSB is gradually decreased to prevent rapid change in air-fuel ratio and to stabilize idle. |
