Reed valve device for 2-cycle engine

Details Reed valve device for 2-cycle engine Reed valve device for 2-cycle engine

1987-09-22

1988-06-07

Myhre, Charles J.

Internal-combustion engines

Two-cycle

Rear compression

137856, 251285, F02B 3304

Patent

active

047489448

ABSTRACT:
A reed valve device for a 2-cycle engine includes a valve housing having several ports extending thereinto from a surface thereof. Several reed valves each have one end secured to the housing and can move between a position spaced from the surface and a position disposed against the surface and obstructing a respective port. Two main shafts are rotatably supported on the housing, and are coupled for synchronous rotation by a gear plate arrangement. Each main shaft has thereon a stopper which can move between positions engaging and spaced from the reed valve in response to rotational movement of the associated shaft, engagement of a stopper and a reed valve effecting an increase in a spring constant of the reed valve. When the engine exceeds a predetermined speed, a motor rotates the shafts to move the stoppers into engagement with the reed valves.

REFERENCES:
patent: 1494176 (1924-05-01), Little
patent: 4076047 (1978-02-01), Akahori
patent: 4195660 (1980-04-01), Taipale et al.
patent: 4423706 (1984-01-01), Onodera
patent: 4696263 (1987-09-01), Boyesen

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