The fuel state sensing device has a fuel pressure sensor for sensing a bulk modulus of {HEAD ~ the fuel} existing in {TAIL ~ a fuel passage} extending from a discharge port of the fuel pump to the injection hole 
The fuel state sensing device has a fuel pressure sensor for sensing a bulk modulus of { HEAD ~ the fuel } existing in { TAIL ~ a fuel passage } extending from a discharge port of the fuel pump to the injection hole
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH