Cummins Inc. said its heavy-duty diesel engines that comply with the Environmental Protection Agency’s 2010 standards will not require NOx aftertreatment, although its medium-duty engines will use ...

Thanks to “heavy-duty truck maintainers” reporting fewer engine-related problems, Caterpillar and Cummins ranked highest in customer satisfaction in the J.D. Power and Associates 2007 Heavy-Duty Truck ...

Navistar International Corp., in a move that seems likely to pinch suppliers Cummins Inc. and Caterpillar Inc., said yesterday that it plans to begin producing a heavy diesel engine for its ...