Catalytic exhaust gas afterburner - wit heater on smaller unit near engine actuated by ignition switch and thermocouple

摘要

A catalytic after combustion system for the exhaust gases of motor cars is divided into a small catalytic unit close to the engine, and a larger one at a suitable remote spot. The small unit is fitted with an electric heater which is cut in by the ignition switch and cuts out when a certain temp. has been reached. This produces purified exhaust gases from the start. A temporary stop of the car engine still keeps the small catalytic unit at a high temp., thus improving its efficiency.