Southwest Research Institute (SwRI) demonstrated the effectiveness of its CAT-DEF technology during the WCX World Congress Experience in Detroit, which took place April 5–7. The advancement successfully reduced heavy-duty diesel engine nitrogen oxide (NOx) emissions to meet the California Air Resources Board (CARB) 2027 standards.
source https://www.lifetechnology.com/blogs/life-technology-technology-news/technology-reduces-heavy-duty-diesel-emissions-to-meet-stringent-carb-2027-nox-requirements
