| 摘要 |
Methods and apparatus are provided for plasma-assisted engine exhaust treatment. In one embodiment, an engine exhaust treatment system includes at least one conduit with an inlet portion ( 215 ), an outlet portion ( 216 ), an intermediate portion ( 205 ), and at least one plasma cavity ( 210 ). The inlet portion is configured to connect to an engine block ( 510 ) and receive an exhaust gas. The outlet portion emits the exhaust gas after plasma treatment. The intermediate portion conveys the exhaust gas from the inlet portion to the outlet portion. In one embodiment, one or more plasma cavities ( 342, 344, 346 ) are located proximate to the inlet portion for treating the exhaust gas. The system also includes an electromagnetic radiation source ( 340 ) connected to the cavities for supplying radiation to the cavities, wherein the radiation has a frequency less than about 333 GHz. Exhaust gas treatments that use plasma catalysts ( 70, 170 ) are also provided.
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