Word: mufflers
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Dates: during 1970-1979
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Another approach we can take with essentially the engine we have today is the so-called catalytic approach. And this amounts to putting a catalyst essentially in place of the present muffler. This is usually an oxidizing catalyst because we have to somehow burn up the carbon monoxide, hydro-carbon.... Right now, for example, one of the major problems of lead in gasoline, is coating the catalyst and the catalyst doesn't last very long...