A spark plug is disposed so that its discharge electrode portion is in the proximal area of {HEAD ~ the fuel} from {TAIL ~ the fuel injection valve} 
A spark plug is disposed so that its discharge electrode portion is in the proximal area of { HEAD ~ the fuel } from { TAIL ~ the fuel injection valve }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL