| 摘要 |
An exhaust treatment device, such as a catalytic converter assembly ( 20 ) for vehicles includes an inner housing ( 21 ) having an inlet and an outlet defining a longitudinal direction ( 63 ) and having a catalytic material ( 27, 27 ') therein chosen to reduce undesirable emissions from the exhaust of a combustion engine as the exhaust passes from the inlet to the outlet. The catalytic converter assembly ( 20 ) further includes an outer housing ( 22 ) enclosing the inner housing ( 21 ) but characteristically not contacting the inner housing ( 21 ), the outer housing ( 22 ) including an inlet and an outlet that align with the inlet and outlet of the inner housing ( 21 ), the inner and outer housing ( 21, 22 ) including walls ( 30, 31 ) forming a sealed cavity ( 26 ) around the inner housing ( 21 ), the cavity ( 26 ) having a vacuum drawn therein. The catalytic converter assembly ( 20 ) further includes supports ( 25 ) of various configurations and materials that extend radially between the inner and outer housings ( 21, 22 ).
|
