New Cummins Westport Natgas Engines Meet Low NOx


The model-year 2018 Cummins Westport B6.7N natural gas engine for school bus applications meet the lowest optional standards for oxides of nitrogen (NOx) emission, the company announced.

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Think You Know Diesel? Think Again

New federal emissions standards ratings released this year for school bus engines reveal that all fuels, including diesel, are now much cleaner with emissions falling well below EPA emissions standards.