Patent ID: 6418890
Filing Date: 2002-07-16
Classification: F02B,F02D,Y02T

Abstract:
A control assembly for exhaust timing control a two-cycle internal combustion engine, the two-cycle internal combustion engine having a housing, and at least one cylinder having an exhaust port with an effective height, wherein the exhaust port is in communication with an exhaust channel, the control assembly comprising:a guide channel formed in the housing of the internal combustion engine; a control valve assembly movable within the guide channel between a retracted position and an extended position, whereby the control valve assembly modifies the effective height of the exhaust port when in the extended position; an operating assembly for moving the control valve assembly within the guide channel between the retracted position and the extended position; and a sealing arrangement between the control valve assembly and the guide channel, wherein the sealing arrangement is located on at least one of the control valve assembly and the guide channel, wherein the sealing arrangement comprises at least one gasket, wherein the at least one gasket provides a seal between the control valve assembly and the guide channel.