Two-stroke cycle gasoline engine

Details Two-stroke cycle gasoline engine Two-stroke cycle gasoline engine

1979-08-31

1981-09-15

Burns, Wendell E.

Internal-combustion engines

Two-cycle

Separate air and gas pumps

123 73CC, 123 73AF, 123433, 123324, 123 51B, 123 51BD, F02B 108

Patent

active

042890942

ABSTRACT:
A two-stroke cycle gasoline engine having a first scavenging port which is supplied with fuel-air mixture through a mixture passage, and a second scavenging port which is supplied with air, wherein supply of fuel-air mixture through the mixture passage is substantially throttled while supply of air through the second scavenging port is interrupted, so as to perform stratified scavenging, when the engine is operating at low load, while in medium to high load operation the throttling of the mixture passage is released while air is injected through said second scavenging port, so as to generate swirling of mixture charged in the cylinder chamber.

REFERENCES:
patent: 976858 (1910-11-01), Easthope, Jr.
patent: 1183688 (1916-05-01), Snyder
patent: 1722951 (1929-07-01), Barkey
patent: 2406491 (1946-08-01), DeWaern
patent: 3680305 (1972-08-01), Miller
patent: 4191141 (1980-03-01), Franke

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