Navistar unveils 15-liter MaxxForce

Published March, 19 2009

Navistar yesterday, March 18, introduced a new 15-liter version of the MaxxForce engine for its International truck brand at the Mid-America Trucking Show.

The engine “was developed using a proven formula of collaboration,” said Eric Tech, president of Navistar’s engine division. The company worked with Caterpillar in producing the MaxxForce 15, “leveraging a proven platform,” including the block, crankshaft, head and other components of the Caterpillar C15, he said. Navistar will add to that foundation the fuel and air systems it developed for the MaxxForce 11- and 13-liter engines.

Caterpillar announced in June 2008 that it will exit the heavy-duty on-highway engine business effective with the next round of emissions cuts in January 2010.

Tech said maximum ratings will include 500 hp with 1,850 lb. ft. of torque as well as a 550-hp version at the same torque level. Both 1,800 and 2,000 rpm-governed speeds will be offered. The engine will be built at Navistar’s Huntsville, Ala., plant along with the MaxxForce 11- and 13-liter engines.

The necessary testing, verification and certification for the MaxxForce 15 means it won’t be available in January 2010. Five million miles of testing will be done before the engine is introduced, according to Tech.

As a bridge, Navistar will use Cummins ISX engines built in 2009 to the extent allowed by the U.S. Environmental Protection Agency, said Tim Shick, director of business and product strategy for Navistar Engine Group. In addition, the MaxxForce 13 will be used for applications that don’t require 15-liter power. Shick expects the 15-liter engine to be available in early 2011.

“Development of the MaxxForce 15 took several years,” said Jim Hebe, senior vice president of North American sales operations. “It’s all about integration, and International wanted a more integrated engine strategy. Today, International is the most vertically integrated truck manufacturer.”

Referring to the fact that Navistar is the only engine maker not using selective catalytic reduction to meet new emissions regulations that go into effect in January 2010, Hebe said, “The competition says we’re on an island. We think it’s more like an oasis.” Navistar will meet the 2010 regulations using a combination of enhanced exhaust gas recirculation and emissions credits.

With the addition of the MaxxForce 15, the Navistar heavy-duty engine family ranges from 11 to 15 liters with power ratings from 300 to 550 hp.