Patent ID: 9732713
Date: 2017-08-15
CPC Classifications: F02B,F02D,F02M,Y02T

Claim:
1. A fuel system for an engine having a cylinder with an inlet air port, the fuel system comprising: an air box surrounding the inlet air port; a gaseous fuel injector positioned in the air box and having a nozzle located at the inlet air port; a gaseous fuel control valve; a fuel supply line fluidly extending from the gaseous fuel control valve to the gaseous fuel injector; a purge valve fluidly coupled to a purge fluid supply; a purge fluid supply line fluidly extending from the purge valve to at least one of the fuel supply line and the gaseous fuel injector; a return valve fluidly coupled to an accumulator; and a return line fluidly extending from at least one of the fuel supply line and the gaseous fuel injector to the return valve.