Internal-combustion engines – Charge forming device – Heating of combustible mixture
Patent
1989-05-12
1990-05-22
Wolfe, Willis R.
Internal-combustion engines
Charge forming device
Heating of combustible mixture
261 67, F02M 3118
Patent
active
049268317
ABSTRACT:
The present invention is embodied as a fuel vaporization apparatus for use with an internal combustion engine for supplying vaporized fuel to the carburetor so as to provide a more efficient and economical burning of the fuel. The device comprises two exhaust manifolds through which engine exhaust passes, a heat exchange plate attached at the upper end of the exhaust manifold, and a vapor generator chamber attached adjacent the heat exchange plate and connected to the exhaust manifolds. A fuel inlet device delivers atomized fuel into the heated vapor generator chambers before it enters the carburetor. The two vapor generator chambers are connected by a vapor passage element forming one large vapor generator device which entraps a supply of vaporized fuel. A vapor control valve is attached to a side of the vapor passage element and provides a metering of the fuel from the vapor passage element into the venturi stacks of the carburetor in a quantity determined in dependence on an operator command signal such as the pressing of an acceleration pedal. Temperature sensors are provided so as to control the device in a manner that it will be operative only at periods when the vapor generator chambers are heated sufficiently to vaporize the fuel; otherwise, fuel will be delivered to the carburetor in a conventional manner. The vapor control valve provides a unique function in that it allows a single valve to control fuel quantity into both the primary and secondary venturi stacks of the carburetor.
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Macy M.
Wolfe Willis R.
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