| 摘要 |
PURPOSE:To reduce HC and CO and improve fuel consumption and suppress the generation of smoke by correcting the fuel injection timing in warming according to the density of the atmosphere and operation conditions. CONSTITUTION:A circuit 101 outputs the actual-value signal S2 of injection timing, a circuit 102 outputs the optimum aimed-value signal S3 of injection timing according to the revolution speed and the actual position (value corresponding to injection amount) of a sleeve, a circuit 104 outputs the correction-amount signal S7 for the injection timing corresponding to the cooling-water temperature and the time of lapse after the start, a circuit 112 outputs the injection timing correction-amount signal S10 corresponding to the atmospheric pressure and operation condition, an addition circuit 108 adds S7 and S10 to a signal S3 and outputs a corrected aimed-value signal S8, a circuit 109 outputs the deviation signal S10 between the actual-value signal S2 and the corrected aimed-value signal, a pulse setting circuit 110 outputs an injection timing control signal OS5 for controlling a solenoid valve 54 so that deviation is eliminated, and the injection timing is allowed to coincide with the corrected aimed-value. When the injection timing is made proper, increase of NOX can be prevented, and the deterioration of fuel consumption rate and the formation of HC can be reduced to the min. |
