| 摘要 |
The invention can avoid an energy dissipation and a consumption of an apparatus by minimizing a driving amount of a fuel pump and maintain an improved fuel supply state, in a fuel supply system injecting a liquefied gas fuel by an injector and supplying to an engine. In a return-less type engine fuel supply apparatus provided with a fuel supply pipe line ( 9 ) extended from a fuel tank ( 2 ) and having an injector ( 8 ) in a leading end side, a motor-driven fuel pump ( 3 ), and an electronic control unit ( 12 ) drive controlling the fuel pump ( 3 ) and the injector ( 8 ), a pressure sensor ( 13 ) detecting a fuel pressure so as to output to the electronic control unit ( 12 ) is arranged at a position near the injector ( 8 ) in the fuel supply pipe line ( 9 ) where a fuel pressure approximately coincides with a fuel injection pressure, the electronic control unit feedback controls the operation of the fuel pump ( 3 ) on the basis of the detected fuel pressure in such a manner that the fuel injection pressure maintains a predetermined target pressure, and the fuel pump ( 3 ) is arranged outside an engine room ( 50 ).
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