GB238322A - Improvements in carburetting apparatus for internal combustion engines - Google Patents

Abstract

238,322. Shore, W. E. May 26, 1924. Vaporizers, external.-Heavy oil and a gaseous suspending medium are drawn through a valve 31 and an inlet pipe 28 into the suction chamber 3 of an exhaust-jacketed rotary pump 2, the rich mixture being discharged through an outlet 9 into a vertical exhaust-heated chamber 10. The chamber 10 communicates by a conduit 14 and exhaust-heated coils 15, 17 with a conduit 23 provided with an air inlet valve 26 and leading to the intake manifold 24 of the engine. The exhaust gases pass from the exhaust pipe 13 around the chamber 10 and mixture outlet 9, through the inlet 6 to the jacket 5 around the pump, through the pipes 20, 18, down the chamber 19 surrounding the coil 17, and up through the chamber 16 to the outlet 22. The exhaust pipe is also connected directly to the pipe 20 by a pipe 21. The fuel is supplied to the valve 31 from a tank 36 through a pipe 30, the supply being controlled by one of a series of graduated ports 43, Fig. 4, in a flange 42 of a rotatable disc 41; air to mix with the fuel in the chamber 40 is admitted through one of a series of graduated air inlets 45 in a rotatable disc 44 coupled to the disc 41, and a gas such as hydrogen, acetylene, or natural gas may be admitted at 27; exhaust gases or rich mixture may also be by-passed from the pipes 13, 23 to the inlet 27. The fuel inlet pipe to the tank 36 may project into the tank and surround an electric or other heater. Fuel condensing in the pump casing is conveyed by a pipe 34 to the chamber 10 and then through a trap 35 to the fuel tank. A light fuel carburettor 38 is provided for starting, during which time the heavy fuel mixture may be by-passed from the chamber 10 through a pipe 50 back to the pump until it is thoroughly heated. In a modification, the part of the wall of the chamber 10 immediately opposite the outlet 9 is replaced by a metal casing containing mercury, which acts as a heat store.