Exhaust valve assembly for a two-stroke engine

摘要

An exhaust valve assembly has a valve actuator, a first valve part (FVP) operatively connected to the actuator, a second valve part (SVP), and at least one auxiliary valve operatively connected to the second valve part. When the actuator is in a first position, the FVP is in a fourth position, the SVP is in a seventh position and the at least one auxiliary valve is in a ninth position. When the actuator is in a second position, the FVP is in a fifth position, the SVP is in the seventh position and the at least one auxiliary valve is in the ninth position. When the actuator is in a third position, the FVP is in a sixth position, the SVP is in an eighth position and the at least one auxiliary valve is in a tenth position. The second position is intermediate the first and third positions.

主权项

1. An exhaust valve assembly for a two-stroke internal combustion engine comprising:
a valve actuator movable between a first position, a second position and a third position, the second position being intermediate the first and third positions; a two-part valve having a first valve part and a second valve part, the first valve part being operatively connected to the valve actuator, the first valve part being in a fourth position when the valve actuator is in the first position, the first valve part being in a fifth position when the valve actuator is in the second position, the first valve part being in a sixth position when the valve actuator is in the third position, the fifth position being intermediate the fourth position and the sixth position, the second valve part being in a seventh position when the valve actuator is in the first position, the second valve part being in the seventh position when the valve actuator is in the second position, the second valve part being in an eighth position when the valve actuator is in the third position; and at least one auxiliary valve operatively connected to the second valve part, the at least one auxiliary valve being in a ninth position when the second valve part is in the seventh position, and the at least one auxiliary valve being in a tenth position when the second valve part is in the eighth position.