CONTROL METHOD OF IDLING ROTATION NUMBER OF INTERNAL-COMBUSTION ENGINE

摘要

PURPOSE:To maintain an idling drive characteristics of an engine at a constant level by driving an actuator in accordance with a corrected time of electrication corrected with a correction coefficient based on a fixed data and an actual voltage. CONSTITUTION:When making an engine rotation number close to a target idling rotation number, a deviation of the target idling number and an actual idling number is computed at a step 101. A time of electrification with a fixed battery voltage based on this deviation is computed at a step 102. At a step 103, an actual battery voltage is corrected by a correction coefficient based on the data decided by a difference between an actual battery voltage and the said-fixed battery voltage. An actuator is driven in accordance with the corrected time of electrification and the actual battery voltage at a step 104. This construction permits an idling drive characteristic of the engine to keep a constant level without being influenced by a change of battery voltage.