Fuel supply system for vehicle

Abstract

The invention provides a fuel supply system mounted from an opening provided at a bottom of a fuel tank into a tank, and in which diameter of the opening of the tank can be reduced, and fuel pump, fuel filter and others can be firmly secured thereby achieving a fuel supply system resistant to vibration. A recessed cup portion 13 b having a smaller diameter than an opening 2 is provided on a base seat 13, which closes the opening 2 at the bottom of a fuel tank 1. A plurality of support stays 14 is fixed to a wall 13 c erected from the cup portion 13 b. A fuel pump 5 is combined with a fuel filter 7 for filtering a fuel liquid fed from the fuel pump 5, and a suction port side of the fuel pump 5 is positioned at the bottom of the cup portion 13 b and fixed to the plurality of support stays 14. The cup portion 13 b is arranged to be eccentric from a position D conforming to an outer circumference of the opening of the fuel tank 1, and a feed terminal 11 is provided on a plane of the eccentric space formed between the cup portion 13 b and the position D conforming to the outer circumference.

1 . A fuel supply system for vehicle mounted onto an opening at a bottom of a fuel tank comprising: 
 a base seat for closing said opening;    a cup portion provided on said base seat in such a manner as to enlarge outwardly, have a smaller diameter than said opening and form a recess;    a plurality of support stays each fixed at a separate position from a wall erected from said cup portion;    a motor-driven fuel pump; and    a fuel filter for filtering a fuel discharged from said fuel pump;    characterized in that said fuel pump is combined with said fuel filter, and a suction port side of said fuel pump is positioned at the bottom of said cup portion and fixed to said support stays.    
   
   
       2 . The fuel supply system for vehicle according to  claim 1 , characterized in that the cup portion is arranged to be eccentric from a position conforming to an outer circumference of the opening of the fuel tank, and a feed terminal is provided on a plane of the eccentric space formed between said cup portion and said position conforming to the outer circumference.  
   
   
       3 . The fuel supply system for vehicle according to  claim 2 , characterized in that the fuel filter is enlarged extending into said space above the feed terminal.