A fuel state sensing device is applied to {HEAD ~ an injector injecting fuel}, which is supplied from {TAIL ~ a fuel pump}, though an injection hole 
is supplied from
A fuel state sensing device is applied to { HEAD ~ an injector injecting fuel } , which is supplied from { TAIL ~ a fuel pump } , though an injection hole
OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH