Compression relief system for internal combustion engine

Details Compression relief system for internal combustion engine Compression relief system for internal combustion engine

1980-02-21

1982-01-26

Burns, Wendell E.

Internal-combustion engines

Starting device

Compression relieving type

123 65A, 123 65EM, 123 65PE, F02B 7506

Patent

active

043123082

ABSTRACT:
This invention comprehends a two-cycle internal combustion engine using compression relief to provide a dual compression ratio. Compression relief ports above the exhaust ports of two cylinders firing 180 degrees out of phase connected by a relief passage. The passage is vented at its midpoint. At higher engine speeds exhaust flow, from the cylinder in its power stroke, through the relief passage, blocks the flow from the cylinder in its compression stroke.

REFERENCES:
patent: 1377139 (1921-05-01), Murphy
patent: 2947300 (1960-08-01), Trapp
patent: 3538899 (1970-11-01), Burkett
patent: 4121552 (1978-10-01), Mithuo

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