| 摘要 |
A pollution control method and apparatus devices which have two or more modes of operation in an air breathing engine. One mode of operation optimizes the constituents of engine exhaust fractions for global environmental benefits when a vehicle is operated in a clean air attainment area. A second or additional modes of operation optimize the engine exhaust fractions for ultra-low emission of ozone precursors and other air pollutants, when and where necessary to achieve local ambient air quality standards, in a clean air non-attainment area. The present invention provides methods for receiving commands over a national range and of automatically switching modes to achieve optimal performance.
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