Exhaust means for two cycle engines

Details Exhaust means for two cycle engines Exhaust means for two cycle engines

1977-03-25

1978-10-24

Myhre, Charles J.

Internal-combustion engines

Two-cycle

Whirl through piston-controlled ports

123 65A, 123 65V, F02B 7502

Patent

active

041215524

ABSTRACT:
Two cycle internal combustion engines including a cylinder which is provided with one or more exhaust ports adapted to be closed by piston reciprocating in the cylinder. A valve member is provided in co-operation with the upper portion or upper one of the exhaust ports. Said valve member may be interconnected with the engine throttle valve in such a manner that it is closed under lower speed operation and opened under high speed operation of the engine so as to obtain optimum exhaust valve timing throughout the engine operating speed range.

REFERENCES:
patent: 1299895 (1919-04-01), Anderson
patent: 1477994 (1923-12-01), Buchi
patent: 1612143 (1926-12-01), Moss
patent: 1745824 (1930-02-01), Zoller
patent: 2720872 (1955-10-01), Yokoi
patent: 2798466 (1957-07-01), Rzepeuki
patent: 3240194 (1966-03-01), Rychlik
patent: 3817227 (1974-06-01), Onishi

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