Eaton’s latest advancement in ICE cylinder and valve control provides solution for Euro VII emissions compliance

By Luke Willetts - 16th March 2023

Eaton’s cylinder deactivation (CDA)

USA – Power management firm, Eaton Corporation of Maumee, Ohio, last month announced an emissions testing milestone for its Vehicle Group's Cylinder DeActivation (CDA)* and Late Intake Valve Closing (LIVC)** technologies, both proven to systematically reduce carbon dioxide (CO2) and nitrogen oxides (NOx), and both designed for diesel-engine powered commercial vehicles to comply with Euro VII emissions limits.

According to Eaton the test results for fuel consumption and exhaust temperatures compared with a Euro VI base engine are as follows: The CDA created up to a 38% reduction of NOx compared with 13% for LIVC thanks to exhaust gas temperature increase, which enables optimal emissions after-treatment performance. Eaton’s CDA resulted in a fuel consumption decrease of 3% in a low-load cycle, while LIVC lowered fuel consumption by 0.5%. Using CDA and a close-coupled selective catalytic reduction (SCR) catalyst reduced CO2 emissions by 4% in a low load cycle with NOx emission by 0.02 g/hp-hr.