| http://www.w3.org/ns/prov#value | - The U.S. EPA 2010 emissions standards, the world???s most stringent diesel engine emissions standards, mandated emissions no greater than 0.2 g/bhp-hr (grams per brake horsepower-hour) for NOx and 0.01 g/bhp-hr for PM. To comply, engine and truck manufacturers settled on two types of emissions control technologies: selective catalytic reduction (SCR) and exhaust gas recirculation (EGR).
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