| 摘要 |
PROBLEM TO BE SOLVED: To improve stating performance and exhaust gas performance when starting, by interposing a first solenoid valve between a fuel pump and an injector, interposing a second solenoid valve between the injector and a pressure regulator, and arranging a pressure sensor between the first and second solenoid valves. SOLUTION: A pressure sensor 10 is arranged between solenoid valves 9 interposed among a supply side fuel piping 7, a return side fuel piping 8 and an injector 2. Just after an internal combustion engine is stopped, an injector piping is disconnected from the fuel piping 8, fuel pressure is detected by the pressure sensor 10, and pressure and the present time are memorized. An amount leaked next from the injector 2 is estimated from difference between pressure detected by the pressure sensor 10 when a key switch is rotated up to the position of a starter switch and pressure detected just after an engine is stopped. The injection amount of the injector 2 just after starting is adjusted according to a concentration estimated in a control unit 6 by pressure difference and time difference in an intake manifold 11. |
