F - Mech Eng,Light,Heat,Weapons – 02 – M
Patent
F - Mech Eng,Light,Heat,Weapons
02
M
123/15
F02M 13/08 (2006.01) F02M 21/02 (2006.01)
Patent
CA 1161320
INTERNAL COMBUSTION ENGINE DUAL FUEL SYSTEM Abstract of the Disclosure An internal combustion engine dual fuel system for controllably running the internal combustion engine on a liquid fuel, such as gasoline, in the usual manner or, at will, on liquified petroleum (LP) gaseous fuel. The conventional liquid fuel system of the internal combustion engine is unmodified except for the addition of a remotely controlled shut-off valve in the fuel line at the carburetor fuel inlet. An LP gas suction venturi is disposed in the air induction flow to the carburetor inlet, for example by being mounted in the air filter above the carburetor inlet, and is supplied in fuel from the vapor phase of an LP gas, such as butane or propane, above the level of the liquified gas in an appropriate tank. The LP gas tank and the line supplying the gas to the carburetor air inlet are maintained at a substantially constant temperature via a by-pass of the engine coolant circuit, the flow of coolant through the by-pass being automatically controlled by a thermostat. A manual control in the form of an electrical switch, is provided for shutting off the flow of LP gas while running the engine on conventional liquid fuel, and shutting off the flow of liquid fuel to the carburetor while running the engine on LP gas. -1-
374920
Mclean Kerry L.
Michaels & Associates
LandOfFree
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