Patent ID: 8959902
Filing Date: 2015-02-24
Classification: F01N,Y02T

Abstract:
1. An exhaust aftertreatment system comprising: a first housing including first and second chambers, the first chamber including an exhaust gas inlet receiving exhaust gas from an engine, the second chamber receiving exhaust gas from the first chamber and including an exhaust gas outlet; a burner including a second housing and a combustion chamber disposed within the second housing, the second housing at least partially disposed within the first chamber, the burner supplying heated gas to the second chamber separately from the exhaust gas, the heated gas within the burner being fluidly isolated from exhaust gas in the first chamber, the second housing being in a heat transfer relationship with exhaust gas in the first chamber; a first swirl-inducing diffuser disposed between the first and second chambers and surrounding thesecond housing; a second swirl-inducing diffuser attached to the first housing at the exhaust gas outlet of the second chamber; and a third swirl-inducing diffuser disposed at an outlet of the second housing.