Pit & Quarry, May 2013
EQUIPMENT FOCUS SAFETY ENVIRONMENTAL ers with a clean and efficient solution The Ecomax Tier 4is unique engine design also allows JCBs dealers to sell low cost kits to recalibrate these engines back to previous emissions standards That means that when these machines have been sold used at auctions buyers from non legislated countries without access to ultra low sulfur diesel fuel will be able to purchase and use them without difficulty John Deere Like the John Deere approach to previous tiers its Tier 4F Stage IV technology solution has been designed to consider overall performance and operating efficiency which takes into account total fluid consumption including diesel fuel and additional fluids such as diesel exhaust fluid DEF John Deere Tier 4F Stage IV engines will operate efficiently with traditional ultra low sulfur diesel as well as biodiesel 5 to 20 percent blends meeting applicable ASTM standards providing optimal performance and fuel choice flexibility To meet Tier 4F Stage IV emissions regulations in some power categories John Deere developed the Integrated Emissions Control system an optimized aftertreatment solution paired with the performance enhanced fuel efficient Tier 4i Stage III B engine platform featuring cooled exhaust gas recirculation EGR The John Deere Integrated Emissions Control system will typically consist of a diesel oxidation catalyst DOC diesel particulate filter DPF and a selective catalytic reduction SCR system specifically designed to meet the rigorous demands of off highway applications John Deere will continue to tailor its Integrated Emissions Control system configurations to fit a variety of off highway applications Komatsu Komatsu America Corp introduced a new diesel engine that features the next generation of engine technology designed to meet EPA non road Tier 4i emission regulations Based on Komatsus proprietary technologies developed over many years the new diesel engine reduces exhaust gas particulate matter PM by more than 90 percent and NOx by more than 45 percent compared to current Tier 3 levels Erik Wilde vice president of product marketing for Komatsu says Our Tier 4 platform is based on our proven Tier 3 engine platform and technology To achieve Tier 4 on these models we added a diesel particulate filter similar in function to other manufacturers To optimize machine performance we added in the robust Komatsu Variable Geometry Turbocharger and a large capacity Exhaust Gas Recirculation System Both systems are hydraulically actuated for precision control and reliability www pitandquarry com May 2013 PIT QUARRY 21
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