COLUMBUS, Ind.--(BUSINESS WIRE)--Today, Cummins Inc. (NYSE: CMI) announced it will launch its most efficient heavy-duty diesel engine ever. As the next product in the Cummins HELM™ 15-liter fuel agnostic platform, the diesel X15 will be compliant with U.S. EPA and CARB 2027 aligned regulations at launch. The next generation X15 diesel engine in North America will serve the heavy-duty on-highway market. “We have applied our decades of experience with the X15 to our next-generation product and believe these i ...