Equipment World Digital Magazine
Issue link: http://read.dmtmag.com/i/185325
tier 4 | by Tom Jackson TJackson@randallreilly.com What you need to know about Tier 4 Starting in 2014 new diesel engines will be cleaner than ever – the results of a decade long evolution in technology J Air-to-air Cooler DEF Line Ex ha us t Exhaust Engine Coolant Lines anuary 1, 2014, is a bellFinal requirements. prices by as much as 10 percent. wether day for off-road The reduction in emissions from Here's a short review to help diesel engines. On that fast diesel engines as a result of this you sort out all the details: approaching date, the matechnology has been nothing short jority of diesel engines sold of astounding. But it is mandated EMISSIONS in the United States, Japan and The EPA regulations aimed to drastiby the EPA, and it doesn't come most of Europe will have to meet cheap. By some estimates, the new cally reduce two primary exhaust the most strict exhaust emissions pollutants. Particulate matter, or PM, engines have boosted machine standards yet. To meet those standards – called Tier 4 Final in this country – Temperature Sensor DEF Injector NOx Sensor manufacturers will outMixer fit these engines with a AOC SCR variety of new exhaust aftertreatment compoTemperature Sensors nents. The ramp up NOx to this point has been Exhaust Sensor Throttle gradual, with the Tier Valve DOC 3 standards phased in between 2006 and WGT Fresh Air 2008, Tier 4 Interim Header Assembly with EGR Valve from 2008 to 2012 and Level and Temperature Sensor now Tier 4 Final. You won't have to deal with the full gamut of Tier 4 Final technology until you buy EGR Cooler your next new piece DEF Supply Module of equipment or new and Filter engine. But eventuECU ally almost everybody will have some Tier 4 Compressed Air From Turbocharger Final machines in their DEF Tank fleet. And many of you have at least some Tier 3 or Tier 4 Interim This diagram of the Tier 4 Final solution from John Deere Power Solutions shows machines in your fleet the full gamut of emissions technology from cooled EGR, through a DOC and DEF exhaust dosing in an SCR module. now. There are even some engines out currently that meet Tier 4 EquipmentWorld.com | October 2013 39 EW1013_Tier 4.indd 39 9/24/13 1:56 PM