Stratified-charge two-stroke internal combustion engines

Details Stratified-charge two-stroke internal combustion engines Stratified-charge two-stroke internal combustion engines

1979-05-11

1981-03-03

Burns, Wendell E.

Internal-combustion engines

Two-cycle

Rear compression

123 73A, 123 73B, 123DIG4, F24B 1304

Patent

active

042534330

ABSTRACT:
In a crankcase scavenged two-stroke internal combustion engine, a duct and at least one further passage extends between the crankcase chamber and the combustion chamber. There is a fuel/air mixture port leading into the duct and a pure air port leading into the duct or the crankcase chamber. The passage exits into the combustion chamber between the exit into that chamber from the duct and an exhaust port leading out of the combustion chamber. In operation fuel enters the combustion chamber in the air of the fuel/air stream entering the duct and air is additionally pushed into the combustion chamber by the downward movement of the piston through the passage and the duct. The fuel is separated from the exhaust port by a layer of air leading to better fuel consumption and higher oxidation combustion products.

REFERENCES:
patent: 1121584 (1914-12-01), Harper, Jr.
patent: 1296214 (1919-03-01), Petler
patent: 3916851 (1975-11-01), Otani

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