By Brian Roberts
Cummins has released a new version of the 6.7L engine found in many trucks today. This hydrogen engine was developed to offer cleaner burning fuel for emissions on trucks and pieces of equipment. Europe is rapidly transitioning to the use of hydrogen where this engine was launched. This will be used in truck applications across the 10-26 ton gross vehicle weight and offer a range of around 500 kilometers or 311 miles.
Cummins installed this engine into a Mercedes-Benz Atego 4×2 truck. The hydrogen conversion has no effect on the engine’s performance, payload or cargo capacity. Keeping the engine basically the same and modifying it for a different fuel source keeps most of the engine we are familiar with the same. The B6.7LH engine has 290 horsepower and 885 ft-lbs of torque. The engine runs with much less noise compared to a diesel.
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Cummins has partnered with hydrogen storage specialists NPROXX to assist with the twin hydrogen fuel tanks. The tanks are caron fiber reinforced structurally to provide a very strong yet light weight storage. Capacity is around 40-kilograms and room for an auxiliary 10-kilogram tank. Refill time is estimated to be 10 minutes. With these tanks, the engine has a greater range than that of a battery-powered equivalent truck.
At the time of this publication, Cummins hydrogen engines also include a 9.9L (X10H) and a 14.5L (X15H).
Read this article with all images in the digital issue of Engine Professional magazine https://engineprofessional.com/2025EPQ1/#p=32