An operating condition sensor detects {HEAD ~ the engine operating condition}; and {TAIL ~ a control device} regulates the amount of fuel injected by the fuel injection valve, the injection timing and the ignition timing of the spark plug based on the detected operating condition 
An operating condition sensor detects { HEAD ~ the engine operating condition } ; and { TAIL ~ a control device } regulates the amount of fuel injected by the fuel injection valve , the injection timing and the ignition timing of the spark plug based on the detected operating condition
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