Exhaust port timing control apparatus for two-cycle engine

Details Exhaust port timing control apparatus for two-cycle engine Exhaust port timing control apparatus for two-cycle engine

1995-12-13

1997-09-02

Okonsky, David A.

Internal-combustion engines

Two-cycle

Whirl through piston-controlled ports

F02B 7502

Patent

active

056620748

ABSTRACT:
An exhaust port timing control apparatus for a two-cycle engine includes a control valve which is moved upward and downward in the linear direction across an exhaust port by moving the control valve slidably and rotatably around a supporting axis. The control valve is operated by rotating a pivot provided at an end portion of the control valve. Since the control valve moves linearly, the clearance between the control valve and the exhaust port can be kept very small, whereby the leakage of gas out of the cylinder can be minimized and consequently an accurate exhaust port timing control and a stable engine operation are achieved.

REFERENCES:
patent: 4391234 (1983-07-01), Holzleitner
patent: 4706617 (1987-11-01), Asai et al.
patent: 4776305 (1988-10-01), Oike
patent: 4829946 (1989-05-01), Boyesen
patent: 4993373 (1991-02-01), Klomp et al.
patent: 5063887 (1991-11-01), Ozawa et al.
patent: 5373816 (1994-12-01), Asai et al.
patent: 5410993 (1995-05-01), Masuda et al.

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