METHOD OF CONTROLLING COMMON RAIL FUEL INJECTION DEVICE

摘要

[PROBLEMS] A method of controlling a common rail fuel injection device, providing the maximum exhaust cleaning effect etc. by pilot injection without adverse effect of the pilot injection to main injection during engine operation. [MEANS FOR SOLVING PROBLEMS] In the method of controlling the common rail fuel injection device (100) performing multi-stage injections, crank angle-based pilot injection timing Thetap and crank angle-based main injection timing Thetam are controlled by an ECU (70). The ECU (70) calculates a time-based pilot injection interval Tpin and adjusts the main injection timing Thetam when the pilot injection interval Tpin is less than a preset threshold (1 (ms) in this example).