Design Factors Affecting the Performance of Exhaust Manifold Reactors

Exhaust manifold reactors have been designed which, with air injection, reduced hydrocarbon and carbon monoxide emissions from unmodified passenger car engines to very low levels. The high efficiency of the reactors resulted from the exceptional thermal insulation achieved by circulating exhaust gases around the reactor core and by using multiple radiation shields. Practical application of shielded, recirculation reactors is presently limited by the lack of durable materials of construction.