By-pass flow catalytic converter

摘要

A catalytic converter for an internal combustion engine having a housing provided with an exhaust gas by-pass tube and a valve arrangement that causes the exhaust gas to selectively flow through a catalyst coated substrate to be treated thereby or through the tube so as to exist the converter in an untreated state and in which an actuator is in a sealed relationship with the housing so as to prevent exhaust gas leakage while providing for movement of the valve.