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Fuel Injection Timing System SYSTEM DESCRIPTION The fuel injection timing system determines the optimal fuel injection timing, based on engine speed, injection BASIC CONTROL Input/output signal line Crankshaft position sensor (TDC) E Engine speed ECM E Injection Needle lift sensor E Injection timing Control sleeve position sensor E Control sleeve position The optimal fuel injection timing data, predetermined in proportion HIGH ALTITUDE COMPENSATION Input/output signal line Crankshaft position sensor E Engine speed ECM E Injection Control sleeve position sensor E Control sleeve position Atmospheric pressure sensor E Atmospheric sensor Needle lift sensor E Injection timing Fuel temperature sensor E Fuel temperature E Electric For better drivability in high altitude areas, the fuel injection timing SEF650S ENGINE AND EMISSION BASIC CONTROL SYSTEM DESCRIPTION TD27Ti EC-309 |