Engine Development
Cummins announces latest X15 capable of meeting MY2027 EPA regulations
48V electric heater provides early SCR warm-up to improve NOx conversion
Cummins has announced the next generation X15 diesel engine, as part of its HELMTM 15L fuel agnostic platform, offering ratings up to 605 hp / 2,050 lb-ft and meeting the MY 2027 EPA/CARB Low NOx regulations.
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Recent Posts
Lifecycle Analysis of U.S. Medium- and Heavy-Duty Vehicle Fuel Pathways
March 10, 2026
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A recent study published in Environmental Science & Technology evaluates the lifecycle energy use and greenhouse gas (GHG) emissions of medium- and heavy-duty vehicles (MHDVs) in the United States.
EPA Demands Manufacturer Data as It Expands Action on DEF System Failures
February 15, 2026
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A brief summary of recent EPA changes to DEF-related failures.
EPA repeals 2009 GHG endangerment finding
February 12, 2026
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The US EPA is repealing the 2009 GHG endangerment finding and terminating all vehicular GHG standards.