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MECA report finds additional NOx emission reductions from new heavy-duty trucks achievable and cost-effective

Green Car Congress

CO 2 and NO x certification test data for heavy-duty diesel engines certified from 2002 through 2019. NO x is a precursor for both ground level ozone and secondary PM 2.5 Furthermore, catalyst development has produced higher activity catalysts that can provide higher NO x conversion with lower catalyst loading. Chart: MECA.

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