BIODIESEL FOUND TO HAVE NO IMPACT ON EMISSION CONTROL SYSTEM DURABILITY

摘要

Diesel powered vehicles are becoming more popular in the United States (U.S.). The requirement that they meet strict Environmental Protection Agency (EPA) Tier 2 emission standards has led to the development of emission control systems (ECS). Selective catalytic reduction (SCR) systems with urea injection and nitrogen oxide (NO_x) adsorber catalyst (NAC) systems are the leading technologies to reduce NO_x emissions from diesel engines to Tier 2 limits.