Just because we’re back in the office, doesn’t mean we’re done with
bauma coverage. At the show, John
Deere Power Systems (JDPS) introduced the PowerTech PWL 4.5L engine, which will
meet Tier 4 Final/Stage IV emissions regulations without a diesel particulate
The 85- to
140-hp engine complements the John Deere lineup of Tier 4 Final/Stage IV
off-highway diesel engines rated 48 to 600 hp also announced at bauma.
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 75- to 140-hp power segment.
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.
believe the elimination of the DPF will serve OEMs and end users well in the
very competitive 75 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
The introduction of the PowerTech PWL 4.5L engine represents
the third Integrated Emissions Control system configuration John Deere will
offer for Tier 4 Final /Stage IV.
For the 48
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 75 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 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.
Deere, we tailor our Integrated Emissions Control system configurations to meet
customer needs and Tier 4 Final/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
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 Tier
4 Final/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 Tier 4 Final/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
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
power ratings for the full John Deere Final Tier 4/Stage IV lineup include:
EWX 2.9L: 48-74 hp
EWX 4.5L: 74 hp
PWL 4.5L: 85-140 hp
PSS 4.5L: 125-173 hp
PVS 6.8L: 140-250 hp
PSS 6.8L: 225-300 hp
PSS 9.0L: 250-425 hp
PSS 13.5L: 414-600 hp
has an established record of reliability, accumulating over 22 million
operating hours with various after-treatment technologies. John Deere claims a
large dedicated in-house after-treatment team, working with a mature exhaust
filter and SCR supply chain, all to provide a field-proven Tier 4 Final/Stage
IV product lineup.
worldwide John Deere dealer network of more than 4,000 service locations will
be trained and prepared to fully support customers and their Tier 4 Final/Stage
more information on JDPS and its products, visit www.JohnDeere.com/jdpower.