Navistar receives EPA certification for MaxxForce mid-range diesel engine
Kelly Cauthorn posted on April 06, 2011 11:23
Courtesy of RV Daily Report, Greg Gerber - Editor

WARRENVILLE, Ill. -- Navistar International Corporation announced yesterday that it has received certification from the U.S. Environmental Protection Agency (EPA) for its 2011 model year MaxxForce ® DT mid-range diesel engine, at 0.39g/bHpHr NOx, using Navistar’s in-cylinder NOx reduction technology.
This 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,” said Ramin Younessi, group vice president, product development and business strategy, Navistar. “Our product development team has been laser-focused on our 0.20g NOx in-cylinder emissions solution for the past four years.”
Navistar 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. In just the past 18 months, Navistar’s 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 added. “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.”
Navistar has also received 2010 emissions certification from the EPA and the California Air Resources Board (CARB) for its 2011 MaxxForce 15 big bore diesel engine. The company launched full-scale production of the MaxxForce 15 at its Huntsville, Ala., engine plant in mid-January and the first 2011 model year International ® ProStar ®+ units with MaxxForce 15 are now making their way into customers’ hands.
In addition, Navistar also recently submitted its MaxxForce 13 at 0.20g NOx for EPA certification, once again reiterating its prime technology path in meeting the 0.20g NOx standard through in-cylinder technologies. The company intends to phase-in its engines at progressively lower NOx emissions levels (0.4g NOx, 0.35g NOx, 0.3g NOx, 0.25g NOx, etc.) in the years ahead in an effort to make emissions compliance as seamless as possible to its customers.
SOURCE: Business Wire press release