| 摘要 |
<p>PROBLEM TO BE SOLVED: To stably inject precisely measured fuel by providing a double solenoid having an independently actuating spool in an injector body, and conducting fuel injection in a state where fuel supply is intercepted from a fuel rail by a relative action. SOLUTION: In a state where a first and a second solenoids 10, 20 are off to seal a nozzle portion 120 and open a connecting tool 110, a fuel rail supplies constant pressure fuel so as to conduct fuel injection. When receiving the constant pressure fuel injection and the fuel flows into an injector body 100 with proper pressure, the first solenoid 10 is turned on. Consequently, a spool 11 is pulled to make an oil passage 12 connecting the connecting tool 11 and the oil passage retreat into the injector body 100, so that the fuel injection is intercepted. On the other hand, the second solenoid is actuated to ON, and a spool 12 is pulled to open the nozzle portion 120, thereby injecting the fuel.</p> |
