CHICAGO – Following failure by the American Trucking Assn. and its support from 345 trucking companies to have the U.S. Environmental Protection Agency delay changeover this October to new diesel engine technology, Caterpillar Inc. has launched a new strategy. The company is asking a federal appellate court to overturn the EPA's certification of competitor Cummins Inc.'s engine. Caterpillar contends that under certain driving conditions the Cummins technology disengages its ...

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