Two-stroke engine

Details Two-stroke engine Two-stroke engine

1989-08-09

1990-08-07

Cross, E. Rollins

Internal-combustion engines

Two-cycle

Whirl through piston-controlled ports

123432, F02B 7502

Patent

active

049458671

ABSTRACT:
A two-stroke engine including a pair of intake valves which are symmetrically arranged with respect to a symmetrical plane including the axis of the cylinder. A masking wall is provided for each intake valve to mask the valve opening between the valve seat and the peripheral portion of the intake valve, which is located on the exhaust valve side, for the entire time for which the intake valve is open. These masking walls are also symmetrically arranged with respect to the symmetrical plane.

REFERENCES:
patent: 2292233 (1942-08-01), Lysholm
patent: 2522921 (1950-07-01), Barkeij
patent: 2768617 (1956-10-01), Tierney et al.
patent: 3993037 (1976-11-01), Mukai et al.
patent: 4162662 (1979-07-01), Melchoir
patent: 4340147 (1989-06-01), Tanahashi et al.
patent: 4732117 (1988-03-01), Tanahashi
patent: 4732124 (1988-03-01), Nakamura et al.

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