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Cummins QSL9 engine is Tier 4 Final

Posted By Kerry Clines On April 23, 2012 @ 11:05 am In eRoadPro Newsletter | No Comments

Cummins Inc. says its new QSL9 engine, with up to 400-horsepower output, is ready to meet 2014 EPA Tier 4 Final near-zero emissions standards with a next-generation compact catalyst and selective catalytic reduction (CCC-SCR) aftertreatment system. The company says the engine makes no performance compromises in order to meet the standard, retaining its proven fast engine response and reliability. The compact aftertreatment system provides a fully passive, flow-through operation and enables the engine to further improve fuel efficiency up to 3 percent over the current engine.


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