Two-cycle engine

Details Two-cycle engine Two-cycle engine

1989-12-13

1991-02-26

Okonsky, David A.

Internal-combustion engines

Two-cycle

Whirl through piston-controlled ports

123190A, F02B 7502

Patent

active

049953540

ABSTRACT:
A two-cycle engine having a fuel injector, scavenge port and an exhaust port is provided with a scavenge pump for supplying scavenging air into a cylinder. An exhaust rotary valve is connected to the exhaust port to open and close the port. Similarly, a scavenge rotary valve is connected to the scavenge port to open and close the port. Engine operating condition including engine speed and degree of depressing the accelerator pedal, representing the engine load, is inputted to a control unit, which variably controls the timings of opening and closing the exhaust and scavenge rotary valves in accordance with the engine operating condition.

REFERENCES:
patent: 918211 (1909-04-01), Snyder
patent: 2110754 (1938-03-01), Alston
patent: 2474879 (1949-07-01), Winfield
patent: 4244338 (1981-01-01), Rassey
patent: 4354459 (1982-10-01), Maxey
patent: 4545337 (1985-10-01), Lyons et al.

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