Fuel supply system

Abstract

A fuel supply system includes: a flange mounted at an upper opening in a fuel tank; a fuel pump that discharges fuel in the fuel tank; a high-pressure filter that filters fuel discharged from the fuel pump; and a filter case that accommodates the high-pressure filter and includes an upper case and a lower case, the upper case integrally formed with the flange. The fuel pump is fitted to an underside of the lower case to be positioned substantially coaxial with the high-pressure filter.

1 . A fuel supply system comprising:
 a flange mounted at an upper opening in a fuel tank;   a fuel pump that discharges fuel in the fuel tank;   a high-pressure filter that filters fuel discharged from the fuel pump; and   a filter case that accommodates the high-pressure filter and includes an upper case and a lower case, the upper case integrally formed with the flange,   wherein the fuel pump is fitted to an underside of the lower case to be positioned substantially coaxial with the high-pressure filter.   
   
   
       2 . The fuel supply system according to  claim 1 , wherein an abutment position between the upper case and the lower case is arranged below the high-pressure filter. 
   
   
       3 . The fuel supply system according to  claim 1 , wherein an abutment position between a lower end face of the upper case and an upper end face of the lower case and an abutment position between a lower end face of the high-pressure filter and the upper end face of the lower case are at the same height. 
   
   
       4 . The fuel supply system according to  claim 2 , wherein the filter case is formed by welding at the abutment position.