John Deere is one of the few manufacturers dedicated to providing efficient power to meet the needs and rigors of off-highway applications. John Deere Final Tier 4/Stage IV engines will operate efficiently with traditional ultra low-sulfur diesel as well as biodiesel five to twenty percent (B5-B20) blends meeting applicable ASTM standards, providing optimal performance and fuel choice flexibility. Like John Deeres approach to previous tiers, its Final Tier 4/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). Monitored and controlled by proprietary electronics within John Deeres enhanced engine control unit (ECU), the Integrated Emissions Control system also provides outstanding fluid efficiency without sacrificing overall performance. Lower DEF consumption means DEF tank size can be smaller minimizing the impact on vehicle applications, extending DEF filter service intervals and reducing operator involvement. "Exhaustive research and testing determined that an application-specific SCR system that is well integrated with our proven Interim Tier 4/Stage III B engine platform will be the best solution to achieve Final Tier 4/Stage IV emissions compliance while delivering the power, performance, ease of operation, fluid efficiency, reliability and economical operating cost that our customers expect from John Deere."Ĭonsisting of an exhaust filter and SCR aftertreatment components that are optimized and fully integrated, the Integrated Electronic Control system will allow John Deere engines to utilize less diesel exhaust fluid (DEF) than alternative Interim Tier 4 SCR technology solutions. "At John Deere, we continue to offer the right combination of technologies at the right time to meet increasingly stringent emissions regulations and customer needs," said John Piasecki, director of worldwide marketing, sales and customer support for John Deere Power Systems. John Deere will continue to tailor its Integrated Emissions Control system configurations to fit a variety of off-highway applications.
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. To meet Final Tier 4/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 Interim Tier 4/Stage III B engine platform featuring proven cooled exhaust gas recirculation (EGR).
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