In an engine provided with a throttle valve actuator which controls {HEAD ~ the opening/closing} of {TAIL ~ the throttle valve}, a target throttle valve opening degree is determined based the amount of accelerator pedal depression 
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In an engine provided with a throttle valve actuator which controls { HEAD ~ the opening / closing } of { TAIL ~ the throttle valve } , a target throttle valve opening degree is determined based the amount of accelerator pedal depression
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH