Internal-combustion engines – Water and hydrocarbon
Patent
1979-04-13
1981-09-01
Lall, P. S.
Internal-combustion engines
Water and hydrocarbon
123 25R, 123198A, F02D 1900
Patent
active
042865506
ABSTRACT:
A fuel additive injection device for injecting an additive into an automotive engine to slow down the burning rate of gasoline while the engine is under heavy load, thereby reducing knocking or pre-ignition while increasing engine output power and increasing fuel mileage. A vacuum chamber having a diaphragm therein is connected to the intake manifold of the engine so that the diaphragm moves back and forth as the pressure in the intake manifold changes. A connecting rod is coupled to the side of the diaphragm opposite to the interior of the chamber. A needle valve connected to the diaphragm through a control rod and a connecting rod and positioned through a valve seat in a flow control passage regulates the flow of additive into the intake manifold of the engine, preferably through the throat of the carburetor. When the pressure in the chamber increases corresponding to a heavy engine load, the needle valve opens increasing the flow of additive to the engine which in turn reduces the burning rate. A second needle valve can be added, operated by the same control rod, for controlling the flow of the second fuel additive wherein the second fuel additive increases the burning rate of the engine fuel at high engine speeds.
REFERENCES:
patent: 2509648 (1950-05-01), Mock
patent: 2599985 (1952-06-01), Fox et al.
patent: 3845745 (1974-11-01), Dunlap et al.
patent: 3970052 (1976-07-01), Andoh
patent: 4062327 (1977-12-01), Knights
patent: 4125092 (1978-11-01), Inamura
patent: 4204481 (1980-05-01), Malec
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