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