Power management company Eaton in collaboration with Cummins have expanded their lineup of integrated ISX15 SmartAdvantage powertrains to provide customers with additional choices tailored to their unique application and operations. A SmartAdvantage direct drive ratio is now available, and new engine ratings for the small-step overdrive ratios are being announced.
The new SmartAdvantage direct drive ratio is available in Cummins ISX15 400hp and 450hp ratings with 1,550/1,750 ft/lbs torque-rating, ensuring optimal performance at lower rpm when combined with a 2.26 or 2.28 axle ratio. This package is a solution for line haul or regional haul applications that operate in flat and hilly road terrains at cruise speeds in the 50 to 62 mph range.
Launched in 2013, the SmartAdvantage powertrain with small-step technology is now available with 400hp and 420hp ratings that provide customers with additional options beyond the original 450hp rating. Small-step technology provides the benefits of a direct drive and an overdrive transmission configuration and is ideal where cruising speeds exceed 62 mph or where vehicles spend a high percentage of time (75 percent or more) at a set cruise speed.
The new SmartAdvantage powertrain options continue to leverage the diesel engine’s torque and efficiency with technology that enables downspeeding. Downspeeding refers to engine operation at a lower rpm while cruising at a certain speed for fuel savings. Today’s line haul and regional haul fleets are spec’ing downsped powertrains to maximize fuel efficiency.
The Eaton Fuller Advantage Series 10-speed transmissions feature a 26 percent step between ninth and 10th gears to maximize downspeeding in the small-step overdrive model by keeping the engine in its “sweet spot” for maximum fuel economy. Fuller Advantage transmissions address friction loses every 100 rpm of engine downspeeding, bolster fuel efficiency by approximately one percent and provide customers with increased cost savings.
“The Eaton and Cummins SmartAdvantage Powertrain continue to demonstrate our unparalleled collaboration,” said Ryan Trzybinski, product strategy manager, commercial powertrain, Eaton. “We’re building on that success now with these new additions to our lineup of products that give our customers improved fuel economy, performance and driver satisfaction.”
“We understand our customers operate in diverse conditions and that they ask for choice,” said Mike Taylor, general manager, global powertrain, Cummins. “We’re pleased to support our customers by providing an optimal SmartAdvantage powertrain option within a single provider of solutions across their diverse fleets. The SmartAdvantage powertrains are redefining efficiency and are available in the most fuel-efficient trucks from the OEM of your choice.”
Features of the Eaton Fuller Advantage automated transmission include the use of lightweight components and precision lubrication, which reduces churning losses and eliminates the need for a cooler. These factors reduce weight, increase reliability and improve fuel efficiency. Optimized shifting is based on grade, vehicle weight, engine torque and throttle position.
