John Deere PowerTech™ PSS 9.0L Final Tier 4/Stage IV diesel engine
John Deere's Integrated Emissions Control system meets the demands of off-highway applications.
WATERLOO, Iowa (April 17, 2012) — John Deere Power Systems will exhibit its PowerTech™ PSS 9.0L Final Tier 4/Stage IV diesel engine featuring the Integrated Emissions Control system at Intermat 2012, April 16 – 21 in Paris.
United States Final Tier 4 and European Union Stage IV emissions regulations for mobile off-highway diesel engines 56 kW (75 hp) and above will be implemented in stages starting in 2014 and 2015. These standards maintain the particulate matter (PM) levels established by Interim Tier 4/Stage III B regulations while requiring an additional 80 percent reduction in nitrogen oxides (NOx) from previous regulations.
As announced on March 2, John Deere will continue with its planned building-block approach to meet the challenging Final Tier 4/Stage IV regulations. To achieve compliance, John Deere developed the Integrated Emissions Control system — a solution that optimizes engine performance, operating efficiency and reliability.
For engines 56 kW (75 hp) and above, the Integrated Emissions Control system will consist of a diesel oxidation catalyst (DOC), a diesel particulate filter (DPF) and a selective catalytic reduction (SCR) system specifically designed to meet the demands of off-highway applications. The DOC/DPF exhaust filter reduces PM while cooled EGR and the optimized SCR system reduce NOx to the regulatory levels of Final Tier 4/Stage IV.
"From the onset of emissions regulations, John Deere has focused on incorporating emissions-reduction technologies that meet applicable regulations while maintaining or improving performance," said John Piasecki, director of worldwide marketing, sales and customer support for John Deere Power Systems. "SCR is an appropriate technology building block for Final Tier 4/Stage IV, now that it is more mature for off-highway applications, the DEF supply chain infrastructure is better developed, and John Deere has optimized the performance of our SCR system."
"We're committed to using the right combination of technology building blocks to meet increasingly stringent emissions regulations and customer expectations," Piasecki said. "This building-block approach led to the Integrated Emissions Control system and an optimized Final Tier 4/Stage IV technology solution that we're confident will deliver emissions compliance without sacrificing power, performance, ease of operation, fluid efficiency, reliability, durability or economical operating cost."
"John Deere Final Tier 4/Stage IV engine performance will meet or exceed that of our Interim Tier 4/Stage III B engines. John Deere engines will continue to provide the same or higher levels of power density and torque along with transient response that meets or exceeds that offered with Interim Tier 4/Stage III B engines."
John Deere attained a world-class fuel economy position with its Tier 3/Stage III A engines. Since then, the company has continued to demonstrate industry leadership by developing solutions that consider not only fuel economy, but also total fluid economy. Total fluid economy takes into account an engine’s total fluid consumption, including diesel fuel and additional fluids such as diesel exhaust fluid (DEF).
When combined with cooled EGR technology, the Integrated Emissions Control system will enable John Deere engines to meet emissions requirements while utilizing less DEF than alternative Interim Tier 4/Stage III B SCR solutions. DEF consumption with John Deere Final Tier 4/Stage IV engines will be 1 to 3 percent of diesel fuel consumption depending on the application. Lower DEF consumption means DEF tank size can be smaller — minimizing the impact on vehicle applications while extending DEF filter service intervals and reducing operator involvement. Increased pressures created by John Deere's Final Tier 4/Stage IV high-pressure fuel systems will reduce engine-out PM and extend intervals between an active exhaust filter regeneration, improving fuel economy from Interim Tier 4/Stage III B.
"With low DEF dosing rates and a higher-pressure fuel delivery system, John Deere Final Tier 4/Stage IV engines will meet or improve upon the total fluid economy of Interim Tier 4/Stage III B engine models," Piasecki said. "Our enhanced electronic control unit (ECU) monitors and controls the engine and Integrated Emissions Control system, providing superior fluid efficiency without compromising performance."
John Deere has an established record of reliability since becoming the first engine manufacturer to widely commercialize cooled EGR and variable geometry turbocharger technologies in 2005. John Deere has also accumulated nearly 5 million operating hours with DOC/DPF exhaust filter technology implemented for Interim Tier 4/Stage III B, and employs a dedicated in-house aftertreatment team working with a mature exhaust filter and SCR supply chain to provide a field-proven Final Tier 4/Stage IV solution.
Final Tier 4/Stage IV regulations for engines below 56 kW (75 hp) begin as early as 2012. In this power range, John Deere will offer models that meet Final Tier 4/Stage IV regulations using an Integrated Emissions Control system consisting of an exhaust filter without cooled EGR or SCR.
For Final Tier 4/Stage IV, John Deere will offer its familiar PowerTech displacements of 2.9L, 4.5L, 6.8L, 9.0L and 13.5L. Power ratings throughout the lineup will, in some cases, be higher than previous offerings.
John Deere is one of the few manufacturers exclusively dedicated to providing efficient power to meet the needs and rigors of off-highway applications. Designing engines for OEM applications and their own construction, forestry and agricultural machines provides John Deere with unique expertise in integrating the engine into the rest of the vehicle, including the drivetrain, hydraulics, ECU, cooling package and other vehicle systems for optimized efficiency. This integrated process will benefit John Deere machine owners and OEM customers by maximizing performance, operator convenience, fluid economy and overall value.
The proven worldwide John Deere dealer network of over 4,000 service locations will be trained and prepared to fully support customers and their Final Tier 4/Stage IV engines.
For more information on the John Deere Final Tier 4/Stage IV engine technology, check our website at www.JohnDeere.com/tier4. For regularly updated insights on emissions developments and other related resources, visit the John Deere Emissions Hub blog at www.JohnDeereEmissionsHub.com.
Deere & Company (NYSE: DE) is a world leader in providing advanced products and services and is committed to the success of customers whose work is linked to the land — those who cultivate, harvest, transform, enrich and build upon the land to meet the world's dramatically increasing need for food, fuel, shelter and infrastructure. Since 1837, John Deere has delivered innovative products of superior quality built on a tradition of integrity. John Deere Power Systems manufactures and markets 30 kW to 448 kW (40 hp to 600 hp) industrial diesel engines and 56 kW to 559 kW (75 hp to 750 hp) marine diesel engines, as well as drivetrain components for use in a variety of off-highway applications. For more information, visit John Deere Power Systems at www.JohnDeere.com/jdpower.