Truck and engine maker
Navistar Inc. proclaimed the economical operating efficiency of its products during a Webcast Monday concerning what the original equipment manufacturer called “fluid efficiency.”
The Warrenville, Ill., OEM said its ProStar+ tractor with a MaxxForce 13-liter engine was 0.9% more efficient than a Freightliner Cascadia with a Detroit Diesel DD15 engine, and 2.5% more efficient than a Kenworth T660 with a Cummins Inc. 15-liter ISX engine.
The basis for comparison was gallons of fluid used in terms of ultra-low-sulfur diesel fuel plus urea-based diesel exhaust fluid.
The ProStar+ burned diesel fuel only in its exhaust gas recirculation, or EGR, engine, while the Freightliner and Kenworth tractors used both fluids in their selective catalytic reduction, or SCR, systems.
Navistar hired engineering consulting firm Transportation Research Center to run the tests where vehicles traveled 440-mile routes through northern Indiana in June and July.
Navistar said the evaluation complied with standards for a Type IV test as established by the Technology & Maintenance Council of American Trucking Associations.
