JOHN DEERE

John Deere Announces Final Tier 4/Stage IV Engine Technology Path

John Deere announces continuation of its planned building-block approach to meet United States Final Tier 4 and European Union Stage IV emissions regulations.

Final Tier 4/Stage IV regulations for off-highway diesel engines begin as early as 2013 for engines 55 kW (74 hp) and below. Regulatory dates for engines 56 kW (75 hp) and above will be implemented in stages starting in 2014 and 2015, and require particulate matter (PM) levels established by Interim Tier 4/Stage III B regulations to be maintained while requiring an additional 80 percent reduction in nitrogen oxides (NOx) from previous regulations.

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). 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.

“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.

“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.”

Consisting of an exhaust filter and SCR aftertreatment components that are
optimized and fully integrated, the Integrated Emissions Control system will
allow John Deere engines to utilize less diesel exhaust fluid (DEF) than
alternative Interim Tier 4/Stage III B SCR technology solutions. 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. Monitored and controlled by proprietary electronics within the John
Deere enhanced engine control unit (ECU), the Integrated Emissions Control
system also provides outstanding fluid efficiency without sacrificing overall
performance.


Like the John Deere 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). John Deere
Final Tier 4/Stage IV engines will operate efficiently with traditional ultra-low sulfur diesel as well as biodiesel 5 to 20 percent (B5-B20) blends meeting
applicable ASTM standards, providing optimal performance and fuel choice
flexibility.

John Deere is one of the few manufacturers 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,
electronic control unit (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 is 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.

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