Patent ID: 7467623

Claim:
A fuel delivery system for a vehicle engine, comprising: a tank for supplying fuel; a fuel supply device for supplying fuel to a cylinder of the engine; a fuel line extending between the tank and the fuel supply device; a fuel pump connected into the fuel line between the tank and the fuel supply device for drawing fuel from the tank and pumping it to the fuel supply device; and a fuel line purging device for purging fuel from the fuel line after shut down of the engine; wherein said fuel in device comprises an air a compressor and compressed air reservoir for supplying compressed air to the fuel line, a first air supply line connecting the compressor and compressed air reservoir to a first part of the fuel line between the tank and the fuel pump, a second air supply line connecting the compressor and compressed air reservoir to a second part of the fuel line between the fuel pump and the fuel supply device, and a fuel purge line extending between the fuel supply device and the tank, whereby supply of compressed air to the first part of the fuel line via the first air supply line will force any fuel in that first part of the fuel line either directly to the tank or through the fuel pump into the second part of the fuel line, and supply of compressed air to the second part of the fuel line via the second air supply line will force any fuel in that second part of the fuel line through the fuel supply device and the fuel purge line back to the tank.