Control valve driving device in an internal combustion engine

Details Control valve driving device in an internal combustion engine Control valve driving device in an internal combustion engine

1987-08-13

1989-04-11

Okonsky, David A.

Internal-combustion engines

Two-cycle

Whirl through piston-controlled ports

123323, F02B 7502, F02D 3904

Patent

active

048195901

ABSTRACT:
A control valve driving device wherein a control valve is provided in an intake or an exhaust system of an internal combustion engine and means for driving this control valve in response to an operating condition of said internal combustion engine is provided. An opening angle of the control valve is operable to be changed to permit an intake or an exhaust characteristic to be changed. The control valve driving device is characterized in that the control valve can be driven only when a pressure in an intake or an exhaust pipe is at an acceptably low level.

REFERENCES:
patent: 4430975 (1984-02-01), Ishida et al.
patent: 4549518 (1985-10-01), Koumura
patent: 4557233 (1985-12-01), Joppig et al.

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