Tier 4 Regulations Affect More than Engines

Howe, Todd
June 2011
Power Engineering;Jun2011, Vol. 115 Issue 6, p50
Trade Publication
The article focuses on issues concerning Tier 4 regulations as part of the U.S. Environmental Protection Agency (EPA) national program to reduce emissions from nonroad diesel engines through engine controls and reduced-sulfur fuel, as of June 2011. It lists the components that have been improved upon or added to engines that use Tier 4 interim (Tier 4i) technology. Manufacturers will need to account for a reservoir or tank to hold diesel exhaust fluid (DEF), in preparation for the Tier 4 final emissions standards.


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