Executives from Cummins and Eaton revealed on March 10 a new powertrain package for the North American heavy-duty truck market that they expect will deliver a 3 to 6% fuel-economy (FE) improvement, lower preventive maintenance costs, and total life-cycle cost improvements. The package combines an Eaton Fuller Advantage Series automated transmission with new Cummins ISX15 SmartTorque2 ratings. The product will be available in fall 2013 for linehaul, regional haul, and less-than-truckload applications.
The automated transmission will be offered as a small ratio step Over-Drive model with new Cummins ISX15 SmartTorque2 ratings: the ISX15 415 ST2, with torque of 1450 to 1650 lb·ft (1966 to 2237 N·m), and the ISX15 450 ST2, with torque of 1550 to 1750 lb·ft (2102 to 2373 N·m). The powertrain package is currently undergoing field testing with various sized fleets, and initial testing and customer validation results are confirming the anticipated 3-6% better FE, the companies claim.