Two-stroke piston engine

Details Two-stroke piston engine Two-stroke piston engine

1977-04-29

1979-03-06

Myhre, Charles J.

Internal-combustion engines

Two-cycle

Rear compression

123 73V, 123196CP, F02B 3304

Patent

active

041424875

ABSTRACT:
A two-stroke piston engine and method in which oil-free air is mixed prior to ignition with oil-free fuel, by means of a venturi. The engine is lubricated by utilizing the pressure which the piston exerts in the crankcase to draw an air-oil mix into the crankcase and then to push the air and oil out while filtering the air with a rotary filter, to return the oil to a suitable reservoir, the oil-free air being sent to the venturi. Fuel enrichment, as for cold starting, is caused by placing air pressure on a fuel-containing bowl ahead of the venturi so as to increase the flow of fuel into the venturi, rather than by reducing the amount of air as is done with a conventional choke plate.

REFERENCES:
patent: RE24792 (1960-03-01), Dalrymple
patent: 926892 (1909-07-01), Peterson et al.
patent: 1022664 (1912-04-01), Ellu
patent: 1092042 (1914-03-01), Hager
patent: 1296214 (1919-03-01), Peter
patent: 1385250 (1921-07-01), Gerhandt
patent: 1483619 (1924-02-01), Smith
patent: 2682259 (1954-06-01), Watkins
patent: 2952252 (1960-09-01), Geatty
patent: 3931812 (1976-01-01), Ashfield et al.

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