John Deere expands Final Tier 4/Stage IV offering

June 4, 2013
— John Deere Power Systems has introduced the PowerTech PWL 4.5L engine,
which will meet Final Tier 4/Stage IV emissions regulations without a diesel
particulate filter (DPF). The 63 kW to 104 kW (85 hp to 140 hp) engine was announced
at Bauma 2013 in Munich, and complements the John Deere lineup of Final Tier
4/Stage IV off-highway diesel engines rated 36 kW
to 448 kW (48 hp to 600 hp) announced earlier.

The PowerTech PWL 4.5L engine reduces cost and improves
engine packaging by eliminating the DPF — while still meeting customer
performance expectations for applications in the 56 kW to 104 kW (75 hp to 140
hp) power segment.
The
PowerTech PWL 4.5L is equipped with an Integrated Emissions Control system consisting
of selective catalytic reduction (SCR), a diesel oxidation catalyst (DOC) and  cooled exhaust gas recirculation (EGR)
technology. Elimination of the DPF was enabled through combustion system optimization
and improvements in SCR system conversion efficiency.

No DPF means better efficiency and easier maintenance.

“We
believe the elimination of the DPF will serve OEMs and end users well in the very
competitive 56 kW to 104 kW (75 hp to 140 hp) segment, balancing packaging and
product cost considerations with performance and operating cost requirements,”
said John Piasecki, director of marketing, sales and customer support for John
Deere Power Systems. “We expect emissions technologies will continue to evolve
and improve, and we’ll adopt those changes when available to improve the
customer experience.”The introduction of the PowerTech PWL 4.5L engine represents
the third Integrated Emissions Control system configuration John Deere will
offer for Final Tier 4/Stage IV.

For the 36 kW to 55 kW (48 hp to 74 hp) power range,
John Deere will offer models using a
DOC/DPF without cooled EGR or SCR. The PowerTech PWL 4.5L in the 56 kW to 104 kW (75 hp to
140 hp) power range will be equipped with an Integrated Emissions Control
system configured with SCR, a DOC and cooled EGR. Engine models above 104 kW
(140 hp)
will feature an Integrated Emissions Control system consisting of cooled EGR, a
DOC/DPF and SCR. All John Deere Integrated Emissions Control systems are exclusively
designed to meet the specific demands of off-highway applications in the given
power categories.

“At John Deere, we tailor our Integrated Emissions
Control system configurations to meet customer needs and Final Tier 4/Stage IV
emissions regulations,” Piasecki said. “We’re confident that all of our
solutions will deliver industry leading
performance and value while also meeting required long term emissions
compliance.”

John Deere did attain an industry leading fuel economy position
with its Tier 3/Stage III A and Interim Tier 4/Stage III B engines. With the
move to SCR technology for Final Tier 4/Stage IV engines, total fluid economy
becomes important, and John Deere is confident that its total fluid operating costs
will continue that industry leadership. Total fluid economy takes into account
an engine’s total fluid consumption, including diesel fuel and diesel exhaust
fluid (DEF). DEF consumption with John Deere Final Tier 4/Stage IV
engines will be 1 to 4 percent of diesel fuel consumption depending on the
application. Low DEF consumption also means 1) the DEF tank size can be smaller,
minimizing space required on vehicles, 2) extended DEF filter service intervals,
and 3) less on-site bulk storage requirements.

John Deere Final Tier 4/Stage IV engines will provide the same or
higher levels of power density and transient response as the Interim Tier 4/Stage
III B product lineup.

Models and power ratings for
the full John Deere Final Tier 4/Stage IV lineup include:

·        
PowerTech EWX 2.9L:
36 kW – 55 kW (48 hp – 74 hp)

·        
PowerTech EWX 4.5L:
55 kW (74 hp)

·        
PowerTech PWL 4.5L:
63 kW – 104 kW (85 hp – 140 hp)

·        
PowerTech PSS 4.5L:
93 kW – 129 kW (125 hp – 173 hp)

·        
PowerTech PVS 6.8L:
104 kW – 187 kW (140 hp – 250 hp)

·        
PowerTech PSS 6.8L:
168 kW – 224 kW (225 hp – 300 hp)

·        
PowerTech PSS 9.0L:
187 kW – 317 kW (250 hp – 425 hp)

·        
PowerTech PSS
13.5L: 309 kW – 448 kW (414 hp – 600 hp)

“Staying true to our
building block approach, we have adopted the best available technologies to
meet Final Tier 4/Stage IV regulations while minimizing the impact on OEMs and
end users,”
Piasecki said. “The Integrated Emissions Control system in its various
configurations represents technology optimization that achieves emissions
compliance, and delivers the power, performance, ease of operation, fluid
efficiency, reliability, durability and economical operating cost customers
expect from John Deere.”

John Deere has an
established record of reliability, accumulating over 22 million operating hours
with various aftertreatment technologies. John Deere claims a large dedicated
in-house aftertreatment team, working with a mature exhaust filter and SCR
supply chain, all to provide a field-proven Final Tier 4/Stage IV product
lineup.

The 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.

Related Link
www.deere.com