The Diesel Variable Valve Actuation from Eaton Corporation maintains aftertreatment temperature, maximizing an engine's thermodynamic efficiency for both medium- and heavy-duty engines. Eaton offers three variable valve actuation technologies, including Early or Late Intake Valve Closing (EIVC or LIVC) options, a Cylinder Deactivation (CDA) technology, and an Early Exhaust Valve Opening (EEVO) option. Depending on the asset's need, each valve solution can have hydraulic or electro-mechanical actuation, and each can be configured for overhead cam or overhead valve applications. The LIVC can offer improved fuel economy an a higher compression ratio. while the CDA reduces NOx of up to 90% when utilized with advanced aftertreatment, the company stated, and is compatible with Dynamic Skip Fire. Finally, the EEVO can open one or two valves and is compatible with engine brake and other variable valve actuation methods.