Exhaust control valve for internal combustion engine

Details Exhaust control valve for internal combustion engine Exhaust control valve for internal combustion engine

2008-05-06

2008-05-06

Cronin, Stephen K. (Department: 3747)

Internal-combustion engines

Two-cycle

Whirl through piston-controlled ports

C123S090110, C123S0650PD

Reexamination Certificate

active

07367295

ABSTRACT:
An exhaust valve assembly for a two stroke internal combustion engine having a cylinder with at least one main exhaust port and one auxiliary exhaust port is disclosed. The assembly comprises a main exhaust valve for at least partially closing the main exhaust port, an auxiliary exhaust valve for at least partially closing the auxiliary exhaust port, an actuator for actuating the main exhaust valve and the auxiliary exhaust valve, the actuator including a rotary shaft having a first gear and a second gear, the rotary shaft being operatively connected to the main exhaust valve via the first gear, the rotary shaft being operatively connected to the auxiliary exhaust valve via the second gear, an electric motor operatively connected to the rotary shaft for rotating the rotary shaft.

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