Werner Preorders 500 Cummins Hydrogen Engines as German Lab Tops 60% Efficiency
Updated
Updated · autonocion.com · May 15
Werner Preorders 500 Cummins Hydrogen Engines as German Lab Tops 60% Efficiency
1 articles · Updated · autonocion.com · May 15
Werner Enterprises signed on for 500 Cummins X15H hydrogen internal-combustion engines, giving the 2027-bound platform one of its biggest fleet commitments yet.
Cummins is pitching the X15H as a lower-disruption diesel substitute: the 15-liter engine shares service tools and installation footprints with today’s X15 diesel while targeting long-haul routes where battery trucks struggle.
Otto-von-Guericke University in Magdeburg separately reported more than 60% indicated thermal efficiency for its experimental Argon Power Cycle hydrogen engine, a closed-loop design that remains at the lab stage.
That 60% figure does not equal road-ready output: researchers still face power-density and CO2 buildup issues, and brake efficiency after mechanical losses has not been published for a production truck application.
The developments underscore a three-way race to replace diesel in Class 8 trucking, with battery-electric, fuel-cell and hydrogen-combustion systems each targeting different duty cycles through 2030.
In the race to replace diesel, is the bigger hurdle building a charging grid or a hydrogen fuel network?
With high upfront costs for green trucks, which technology offers fleets the quickest return on investment?
Hydrogen Engines for Heavy-Duty Decarbonization: Cummins X15H’s 45% Efficiency vs. German APC’s 60% Lab Breakthrough and the Road to 2035
Overview
Werner Enterprises is taking a major step toward decarbonization by planning to purchase 500 Cummins X15H hydrogen internal combustion engines, aiming to cut greenhouse gas emissions by 55% by 2035. This move responds to growing customer demand for sustainable logistics and leverages Cummins’ fuel-agnostic platform, with production targeted for 2027. The X15H engine burns hydrogen instead of diesel, emitting mainly water vapor and a small amount of NOx, and is designed to match the performance and reliability of traditional engines. This strategy positions Werner at the forefront of adopting practical, scalable hydrogen technology for heavy-duty trucking.