Quote:
Originally Posted by ttoyoda
If my impression is correct, then it seems an engine ECU would be (almost???) un-needed, you could just have a box that pulse-width-modulated the injectors, and the control knob to set the duty cycle would be attached to the gas pedal. There would be no need to synchronize the fuel injection timing like is needed on a diesel engine.
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If the point is to maximize efficiency, you would want an ECU in order to have sequential injection phased properly to the intake timing. Otherwise, you'd have to resort to batch or bank injection and would have the injectors firing at closed valves most of the time.