Study: EPA ’07 engines far exceeded emission expectations

A new study, released by a group of government and industry organizations including the Dept. of Energy, the Environmental Protection Agency, the California Air Resources Board and the Engine Manufacturers Assn., indicates that “clean diesel technologies” used in engines manufactured beginning in 2007 not only reduced certain emissions by 90% over 2004 engines, but “exceeded substantially even those levels required by law. The ACES (Advanced Collaborative Emissions Study) Phase 1 study, conducted by the Coordinating Research Council and the Health Effects Institute, found that “current engine models” produced 98% less carbon monoxide, 10% ...

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From the Print Issue

November 2009

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