| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a fuel injection device for a vehicle capable of maintaining good exhaust emission property upon starting of an engine by improving oil tightness in each injector while the vehicle operation is stopped. <P>SOLUTION: On the downstream side of a low pressure fuel pump 180 for discharging fuel inside a fuel tank 200 at a predetermined pressure, a low pressure delivery pipe 160 which is a tubular body having the injector 120 for intake air passage injection formed therein, a fuel pressure regulator 170, a high pressure fuel pump 155, a high pressure delivery pipe 130 which is a tubular body having the injector 110 for cylinder injection formed therein, and an electromagnetic relief valve 210 are connected in series. By releasing the electromagnetic relief valve 210 when operation of the engine is stopped, fuel pressure inside the high pressure delivery pipe 130 can be lowered corresponding to the stop of the low pressure fuel pump 180, so that oil tightness of each of the injectors 110 and 120 can be secured. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
