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Cummins, Eaton Expand Powertrain Package; Add Natural Gas

Posted on March 10, 2014

Eaton and Cummins Inc. have announced that their SmartAdvantage powertrain package is being expanded to include applications for the ISX12 diesel engine and ISX15 SmartAdvantage applications up to 110,000 lb gross vehicle weight (GVW). The product initially integrated an Eaton Fuller Advantage Series automated transmission with the Cummins ISX15 engine.

Designed to meet the demands of fleets seeking lighter-weight vehicles, the new SmartAdvantage offering will pair the Eaton Fuller Advantage Series 10-speed automated manual transmission with the Cummins ISX12 diesel engine. It will be offered as a small-ratio-step overdrive model with two new Cummins ISX12 SmartTorque2 (ST2) ratings: the ISX12 370ST2, with torque of 1150 lb-ft to 1450 lb-ft (1559-1966 Nm), and the ISX12 425ST2, with torque of 1350 lb-ft to 1650 lb-ft (1830-2237 Nm).

Through a combination of hardware and software enhancements, the two companies said the powertrain package benefits include:  fuel and shifting strategies to provide an estimated 2 percent to 4 percent fuel economy improvement for regional haul applications; optimized engine and transmission communications and new control logic, enabling further engine downspeeding in the overdrive position, and the effective use of direct-drive technology in operational conditions required for a blend of perfect efficiency.

This newest SmartAdvantage powertrain package will be available in the fall of 2014, and is currently undergoing field testing, with initial test results confirming a 2 percent to 4 percent fuel economy improvement, depending on duty cycle and application, the companies said.

Eaton and Cummins continue to collaborate on expanded offerings to cover more market segments, including the ISX15 SmartAdvantage in operations over 110,000 lbs. The joint validation of the products is being conducted with planned release later in 2014.

More information on the SmartAdvantage Powertrain can be found at

Cummins Westport & Eaton Announce Integrated Powertrain

Further, Eaton and Cummins Westport, a joint-venture company of Cummins Inc. and Westport Innovations announced an integrated powertrain package for the Cummins Westport ISX12 G natural gas engine that will provide customers with an automated transmission to be paired with a spark-ignited natural gas engine in the North American market. The powertrain will combine an Eaton UltraShift PLUS automated transmission with the Cummins Westport ISX12 G engine.

Paired with the ISX12 G, the new powertrain package will be available for limited application release for linehaul and regional haul in mid-2014.  The Cummins Westport ISX12 G natural gas engine is based on the Cummins ISX12 diesel engine, and operates on 100 percent natural gas, which can be carried on the vehicle in either compressed (CNG) or liquefied (LNG) form. The ISX12 G has a power band at 1500-1800 rpm, and delivers its peak torque at 1200 rpm. The natural gas engine is available with horsepower of 320 hp to 400 hp (239-298 kW) with 1450 lb-ft (1966 Nm) peak torque.