Dual fuel supply system

Details Dual fuel supply system Dual fuel supply system

F - Mech Eng,Light,Heat,Weapons

02

M

123/58

F02M 25/00 (2006.01) F02M 1/16 (2006.01) F02M 13/06 (2006.01)

Patent

CA 1211012

ABSTRACT OF TIE DISCLOSURE The dual fuel supply system for an internal combustion engine has a carburetor including a fuel/air induction passage having means defining a low pressure zone and a secondary orifice and further including a cavity communicating with the fuel induction passage through the secondary orifice A first or primary fuel supply includes a first float bowl connected to a source of a primary fuel, such as kerosene, a first float controlled valve operable to control the supply of the primary fuel to the first float bowl, a fuel nozzle for supplying the primary fuel from the first float bowl to the low pressure zone, and a conduit connecting the first float bowl in communication with the carburetor cavity. The second or secondary fuel supply includes a second float bowl communicable with the carburetor cavity and connected to a source of a second or secondary fuel, such as gasoline, and a second float controlled valve operable to control the supply of the secondary fuel to the second float bowl. In one embodiment, the carburetor includes a throttle valve located downstream of the low pressure zone and a priming fuel port located downstream of the throttle valve. A primer pump having an inlet connected in communication with the priming fuel port can be operated to selectively introduce a quantity of the secondary fuel into the induction passage to facilitate engine starting.

436481

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