What is the Tier 4 Final and Stage IV emissions standard in 2014?
• Beginning in 2014, EPA Tier 4 Final and EU Stage IV will require another major emissions reduction for the industry. Off-highway diesel engines from 174-hp to 751-hp must reduce NOx emissions by a further 80% compared to the 2011 level. By 2014, both NOx and PM exhaust emissions will be reduced by 90% compared with current Tier 3 and Stage IIIA levels. The emissions standards for this power category are: 0.4g/kW-hr Oxides of Nitrogen (NOx) and 0.02 g/kW-hr Particulate Matter (PM) effective January 2014. These extremely low levels can be described as ‘near zero’ emissions levels.
