EXHAUST VALVE POSITION FEEDBACK CONTROL AND LUBRICATION THEREOF

摘要

An arrangement for an exhaust timing control by controlling the effective
height of an
exhaust port of a cylinder of a two-cycle internal combustion engine and
comprising a control
valve assembly arranged in a guide channel so as to be displaceable relative
to the exhaust
port and having an associated operating assembly for shifting thereof, the
control valve
assembly, in its advanced position, decreases the height of the exhaust port
and, in its
retracted position, exposes the entire cross-section of the exhaust port; a
feedback control
system continuously monitors the position of the control valve assembly within
the guide
channel to determine any malfunction or sticking of the between the control
valve and the
guide channel. A lubrication hose connected to the exhaust valve assembly
introduces a
lubricant to the control valve to reduce the likelihood of particle deposit
and sticking.