| 摘要 |
PURPOSE:To improve the accuracy in fuel injection timing by correcting the aimed injection timing according to the temperature of the working fluid in a hydraulic timer, in an apparatus for open-loop-controlling the fuel injection timing by using the hydraulic timer. CONSTITUTION:A calculation circuit 21 calculates the proper injection timing D1 corresponding to the operation state of an internal-combustion engine. The speed data and the fuel temperature data which shows the temperature of fuel which is supplied also as working fluid into a hydraulic timer are input into a fuel- temperature correction data calculation circuit 27, and the deviation of fuel injection timing generated by the variation of fuel temperature is corrected, and a fuel temperature correction data D4 is calculated on the basis of the both input data. Thus, the accuracy in control of fuel injection timing can be improved. |
