Tech Brief
CARB and EPA Low NOx Engines and Trucks Announced
Background
Both California (CARB) and the U.S. EPA have set stringent standards for limiting NOx emissions from heavy-duty trucks. We have covered these standards previously. Without going into the intricacies of the rules and the differences, it is important to point out that compared to today, California requires an intermediate 75% reduction of NOx starting model year (MY) 2024, while starting MY 2027, the final EPA tailpipe standards apply across the country and require a NOx reduction of 82.5% on existing FTP & RMC lab transient test cycles.
Conference Summary – Hydrogen for Sustainable Mobility Forum
A summary of the “Hydrogen for Sustainable Mobility Forum” conference held in Turin.
Cummins new engines introduced and poised to meet MY2027 standards
A round-up of the recently announced engines which will meet the upcoming EPA MY 2027 standards.
Biodiesel and Renewable diesel production in the US hits a speedbump
Biodiesel and renewable diesel production in the U.S. has slowed down significantly in 2025. Here’s why.
