| 摘要 |
PURPOSE:To prevent the rotational frequency of an engine from reduction by providing a means for increasing fuel injection amount after a predetermined time in a fuel supply device for cutting negative pressure acting on a fuel pres sure means for the predetermined time in hot starting engine to increase the fuel pressure by a predetermined amount. CONSTITUTION:In the normal running of an engine A, the fuel injection pressure (fuel pressure) of a fuel injection valve C is regulated by a fuel pressure regulating means D according to intake pressure from an intake path B. Thus, the differential pressure between the fuel pressure and the intake negative pressure is held constant. Also, in hot starting the engine A, the introduction of intake negative pressure into said means D is blocked by a negative pressure introduction blocking means E only for a predetermined time during which an amount of fuel is increased. And in this case when the negative pressure introduction blocking condition is shifted to the negative pressure introducing condition, temporary reduction of fuel pressure caused by the differential pressure between those of the fuel supply side and the fuel return side of said means D is allowed and a fuel increasing means F is constituted to increase the fuel injection amount by the allowance. |
