Patent ID: 7018590
Filing Date: 2006-03-28
Classification: F01N

Abstract:
1. A catalytic muffler comprising: a housing having a first chamber, and a second chamber fluidly communicating through a catalyst bearing reactor bed interspersed therebetween; said reactor bed having a first face facing directly into said first chamber, a second face facing directly into said second chamber and a plurality of discrete flow passages extending longitudinally therethrough between said first and second faces to provide direct fluid communication between said first and second chambers; a first baffle assembly extending longitudinally through said first chamber between said first face of said catalyst bed and said housing to longitudinally partition said first chamber; an inlet passage extending through said housing into said first chamber; an outlet passage extending through said housing into one of said first chamber and said second chamber; a second baffle assembly extending longitudinally through said second chamber between said second face of said catalyst bed and said housing to longitudinally partition said second chamber; said first and second baffle assemblies acting in conjunction with said housing and said reactor bed to define a flow passage through said housing from said inlet passage to said outlet passage requiring at least three sequential passes through said reactor bed directly between said first and second chambers with each subsequent of said passes being through a discrete, laterally adjacent zone of said reactor bed and opposite in direction to an immediately preceding of said passes.