Variable volume crankcase scavenge control

Details Variable volume crankcase scavenge control Variable volume crankcase scavenge control

1989-06-21

1990-09-11

Okonsky, David A.

Internal-combustion engines

Two-cycle

Rear compression

123 73AE, F02B 3304

Patent

active

049553330

ABSTRACT:
A crankcase scavenged two cycle engine is provided with a supplemental variable volume chamber or plenum connected with the crankcase chamber for each cylinder to controllably vary the effective volume of the crankcase chambers and thereby control scavenging pressure. Control methods for providing more consistent scavenging and more efficient charge control are disclosed.

REFERENCES:
patent: 1021791 (1912-04-01), O'Neill
patent: 1550703 (1925-08-01), Knott

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