Navistar touts lower emissions certification for ’11 MaxxForce DT midrange

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Updated Apr 6, 2011

Navistar International Corp. announced that it has received certification from the U.S. Environmental Protection Agency for its 2011 model year MaxxForce DT midrange diesel engine at 0.39 g/bHpHr NOx using Navistar’s in-cylinder NOx reduction technology. Navistar says the certification represents a 22 percent emissions reduction from the original 0.50g/bHpHr certification and demonstrates progress to achieving the 0.20g/bHpHr standard through base engine and in-cylinder optimization.

“As we’ve said all along, we’re continuing on our path to meeting the latest emissions requirements with the most customer-friendly solutions in the industry,” says Ramin Younessi, Navistar group vice president of product development and business strategy. “Our product development team has been laser-focused on our 0.20g NOx in-cylinder emissions solution for the past four years.”

Navistar says it has had continuous success in recent years producing progressively lower emissions diesel engines, phasing in these engines through a process that’s invisible to the customer. Navistar says that in just the past 18 months, its MaxxForce engines have ratcheted down NOx emissions by more than 67 percent from 1.2g NOx to 0.9g to 0.5g and today down to 0.39g and beyond.

“Getting to 0.2g NOx through our in-cylinder technologies has always been part of our plan and remains so today,” Younessi says. “Our technology path continues to be a seamless process for our customers where the only thing that changes for them is the EPA label affixed on the engine.”