FUEL INJECTION TIMING CONTROL METHOD

摘要

PURPOSE:To precisely control the ingition timing of a Diesel engine by determining the signal controlling the fuel injection timing based on the deviation from the target value and an estimated quantity corresponding to the change of the target ignition time. CONSTITUTION:The actual ignition timing thetaR is determined in response to signals of a reference position detector 4 and an ignition timing detector 5. A correction term DC corresponding to the deviation between the target ignition timing and actual iginition timing is determined. An estimated quantity DD corresponding to the change of the target ignition timing is determined based on signals of a rotating speed detector 6D and an injection quantity detector 6A. The injection timing is controlled based on the sum of the correction term DC and estimated quantity DD. Accordingly, the ignition timing can be precisely controlled.