Watch: Cummins innovates to deliver results with the 2027 X15

The Cummins Inc. 2027 X15 with Cummins’ fully integrated powertrain is ready to perform as the company’s most efficient heavy-duty diesel engine yet while lowering emissions. The savings on fuel and maintenance practices result in overall lower total cost of operation compared to the current model.

The video below reveals how changes in the fuel and oil systems, combustion and aftertreatment all converge to create the best evolution yet of the venerable X15. 

Jared Holcomb, Product Manager for Cummins Engine Business Unit North America On-Highway, explains how each new design change plays a critical role including a more compact fuel-lubricated fuel pump, redesigned piston and turbo, a new closed crankcase ventilation system, and a Cummins-produced aftertreatment powered by a 48-volt alternator.

Customers can experience extended oil drain intervals as a result of the improved fuel economy. Those changes become less costly, too, thanks to a new cartridge-style filter. An improved fuel system with lower parasitic losses also gets a new cartridge-style filter that will improve TCO. “If we focus on month-to-month operation, there are TCO savings over current product [2024 X15],” Holcomb says.

Andy Smith, Product Management Leader for Cummins Emissions Solutions, provides a deeper look at the twin module aftertreatment which includes two parallel SCR/DPF canisters paired with 5kW heaters. As Smith points out, no extra batteries are needed to keep treatment temperatures at an optimum level to help ensure NOx reduction over the 2024 X15.

“We did not want to add [batteries] as a source of weight or maintenance and potentially expensive replacement costs,” Smith explains. Watch as Cummins demonstrates its continued commitment to evolving internal combustion technology.