Emissions reduction

摘要

Research looks at the impact of cylinder deactivation and a 48V e-heater upstream of the aftertreatment system on temperature management, NO_x levels and fuel economy. Cylinder deactivation (CDA) has proved to be an effective technology for diesel-powered commercial vehicles to meet future emissions regulations requirements. Eaton's Vehicle Group has shown through previous testing that its CDA technology, when combined with a close-coupled selective catalytic reduction (SCR) aftertreatment system, can reduce NO_x by up to 99% and CO_2 by up to 5% in various drive cycles. However, there are other technologies being evaluated to achieve the NO_x and CO_2 targets established by the California Air Resources Board (CARB) for 2024 and 2027.