Proving Heavy-Duty Hydrogen Engine Integration
PTL supported Southwest Research Institute as part of an industry-backed H₂ICE consortium project focused on converting a Cummins X15N natural gas engine to operate on port-injected hydrogen. Because CO₂ emissions from hydrogen ICE vehicles are by nature near zero, the consortium’s primary emphasis was on achieving competitive fuel economy and sharply reducing other regulated emissions, particularly NOₓ. The main objective was to demonstrate compliance with the California Air Resources Board’s voluntary Ultralow NOₓ designation in a Class 8 truck, a demanding application characterized by high loads, arduous duty cycles, and minimal tolerance for compromises in durability or packaging.
