Cummins’ 12 liter X12 engine will join the lineup next year, targeting vocational, regional and bulk haul weight sensitive applications with the highest power to weight ratio in the industry.
Steven Reedy, program leader for the Cummins X12, says the engine weighs 2,050 lb., making it the lightest heavy-duty engine in the market – about 600 lb. lighter than nearest 13-liter engine and 150 lb. lighter than the nearest 11 liter.
“It’s similar in size and weight to a pre-EGR [Cummins] ISM11 engine,” Reedy adds. “You can have new technology without all the extra weight and baggage that goes with it.”
The X12 will feature a horsepower rating of up to 500 hp and 1,700 lb.-ft. and will get the same single module aftertreatment as the X15. Cummins first announced its single module aftertreatment system concept in 2015, and it became production-ready with the X series, combining VOC, DPF and SCR into a single canister and saving up to 60 percent more space and weighing 40 percent less than the company’s previous aftertreatment system. In addition, the single module aftertreatment system allows the DPF cleaning interval to be extended to between 600,000 and 800,000 miles.
Much of the engine’s weight-savings comes through its design. For example, the engine block has been sculpted and ribbed to minimize weight.
“We only put material where the tools tell us we need it,” Reedy says.
