Patent ID: 11885251
Assignee: TENNECO AUTOMOTIVE OPERATING COMPANY INC.
Field: Chemical engineering (Chemistry)
Classification: CPC F  B  Y | IPC B  F

Claim 0:
1. An exhaust system for a vehicle, comprising:
an exhaust pipe section defining a main exhaust passageway therein;
a selective catalytic reduction (SCR) catalyst arranged in fluid communication with and positioned downstream of the exhaust pipe section; and
a burner assembly connected to the exhaust pipe section, the burner assembly including a burner with a combustion chamber disposed therein, an igniter for initiating fuel combustion in the combustion chamber, and a connecting tube extending between an outlet of the combustion chamber and the exhaust pipe section,
wherein the connecting tube includes an inner surface defining a connecting tube passageway that is arranged in fluid communication with the combustion chamber of the burner and the main exhaust passageway in the exhaust pipe section,
wherein a catalytic washcoat is disposed on the inner surface of the connecting tube, the catalytic washcoat comprising a mixture of a support material and a catalyst material made of one or more platinum group metals (PGM) that chemically react with emissions generated by the burner.