System and method for controlling a combustion state in a multi-cylinder engine for a vehicle

摘要: A system and method for controlling combustion state an internal engine during idling which measures the angular speed of cylinders a certain interval whenever predetermined crank angle is reached, detects given cylinder in stroke when according to change speed. The (method) also divides into plurality groups, each group having pair cylinders, speeds (cylinder group) are compared ignition timing and/or fuel injection quantity corrected so that higher than other groups reduced and, slower, corrects reverse direction by same balance between pairs taken, whereby total sum correction quantities all case always becomes zero.