Vehicle sulfur oxide trap and related method
An automobile exhaust system includes a catalytic converter, a NOx trap, and a sulfur oxide trap. The sulfur oxide trap improves the efficiency of the NOx trap. Sulfur oxide has a deleterious effect on the performance of nitrogen oxide traps. The sulfur oxide trap comprises a monolithic substrate which is over-coated with an aluminum oxide layer and a mixed oxide layer of calcium oxide and magnesium oxide. In a variation, a sulfur oxide trap is integrated with a nitrogen oxide trap by coating the catalyst contained within a nitrogen oxide trap with a mixed oxide layer of calcium oxide and magnesium oxide. In each embodiment, the sulfur oxide trap can be regenerated by heating at elevated temperature for a short time period.
Ford Global Technologies, LLC
B B B B B B B Y B B F Y F F B B B F B B B F B B B B B B Y F B F B
B01D B01J B01J B01D B01J B01J B01J Y02T B01J B01J F01N Y02A F01N F01N B01D B01J B01D F01N B01J B01D B01J F01N B01J B01D B01J B01D B01D B01D Y10S F01N B01J F01N B01D
additional inventional inventional inventional inventional inventional inventional additional inventional inventional additional additional inventional additional additional inventional additional inventional inventional additional additional additional inventional additional inventional additional inventional additional additional additional inventional inventional additional
Amy William Lewis Henderson Mohinder Singh Jun (John)
Berris Watkins Chattha Li