Duel fuel system for internal combustion engine

Details Duel fuel system for internal combustion engine Duel fuel system for internal combustion engine

1975-07-16

1977-04-26

Burns, Wendell E.

Internal-combustion engines

Intake manifold

Manifold tuning, balancing or pressure regulating means

123179G, 261 18A, 261 23A, 261 41R, F02M 1304

Patent

active

040194779

ABSTRACT:
In addition to the gasoline-air mixing primary carburetor on an internal combustion engine, an auxiliary carburetor is provided for mixing air and alcohol, to thereby provide a substantial portion of the fuel-air mixture used by the engine during idle conditions and light-load conditions, while the primary carburetor provides an increasingly greater portion of the total fuel-air mixture during high-load conditions. The alcohol fuel-air mixture flows directly to the intake manifold, thus by-passing the throttle valve which controls the fuel-air mixture from the primary carburetor. The auxiliary carburetor is vacuum controlled.

REFERENCES:
patent: 1552995 (1925-09-01), McKenzie-Martyn
patent: 2430693 (1947-11-01), Udale
patent: 2715392 (1955-08-01), Grevas
patent: 3805756 (1974-04-01), Madariaga

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