Fuel feeding system for a liquefied petroleum injection engine

Abstract

A fuel feeding system for an LPI engine is made to allow fuel remaining inside a fuel supply line and a fuel return line to be drained into a bombe by bypassing a pressure regulator while an engine gets cooler after operation, whereby the fuel can be saved from external leakage via a fuel injector, and contaminants are reduced while the engine is running, resulting in improved maintenance of the engine during an engine overhaul.

1 - 3 . (canceled)  
   
   
       4 . A fuel feeding system for a liquefied petroleum injection engine, the system comprising: 
 a pressure regulator mounted in a fuel return line;    a bypass opening for bypassing the pressure regulator; and    a bypass stopping valve cooperating with said bypass opening.    
   
   
       5 . The system as defined in  claim 4 , wherein the downstream part of said bypass stopping valve is installed with a check valve.  
   
   
       6 . The system as defined in  claim 4 , wherein said bypass opening comprises a microtubule.  
   
   
       7 . The system as defined in  claim 4 , wherein said bypass opening comprises a pipe.  
   
   
       8 . The system as defined in  claim 7 , wherein said bypass stopping valve is disposed at said bypass pipe.