Coming clean

Wehrspann, Jodie
October 2010
Farm Industry News;Oct2010, Vol. 43 Issue 9, p10
Trade Publication
This article examines the impact of the U.S. Environmental Protection Agency's Tier 4i emissions regulations on agricultural engines. The new rules call for a 90% reduction of particulate matter and a 50% drop in oxides of nitrogen. The expected outcome of Tier 4A engines are cleaner air and a healthier environment. Dave Kanicki of "Farm Equipment" estimates that Tier4i engine technology will lead to a four-nine percent increase on the price of a 2011 model tractor. Particular focus is given to the Selective Catalytic Reduction technology.


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