EXHAUST VALVE FOR COMBUSTION ENGINES

摘要

An exhaust valve (10) includes a housing (44) having a passageway (46) extending axially therethrough. The exhaust valve (10) also includes a rotatable butterfly plate (50) disposed in the passageway (46) of the housing (44) and having an annular groove (52) in a periphery thereof. The exhaust valve (10) further includes a ring seal (60) disposed in the groove (52) and being radially compressible and expandable for engagement and disengagement with the housing for opening and closing the passageway (46) to allow and prevent exhaust gases flowing therethrough.