ENGINES
iVT International Off-Highway 2020 49
As with Cummins’ B6.7 structural engine,
which is also part of its Stage V lineup, the new
four cylinder block and oil pan include design
features to minimize weight yet provide maximum
strength for engine and driveline durability.
Both F3.8 and F4.5 benefit from Cummins’
wastegate turbocharging as standard, with Holset
VGT variable turbocharger technology available on
the F4.5 engine for applications requiring higher
torque across a wider range of engine speeds.
Stage V
The F3.8 and F4.5 structural engines meet EU
Stage V emissions legislation with Cummins’ Flex
Module aftertreatment. This uses the same
technology developed for Cummins Single
Module aftertreatment, in a flexible two-piece
package. It enables the required emissions levels
to be met without the use of exhaust gas
recirculation (EGR). The Flex Module is
adaptable to suit the available space across
a range of tractor designs, without impacting
lines of visibility from the cab.
“Customer flexibility has been core to the
design of our new engines,” says Schmelzer. “Both
products can be tailored to suit a variety of
installations with features such as the oil pan, fan
hub position, turbocharger position and
aftertreatment, customizable to suit packaging
requirements. Electronic control capability means
performance is tailored for on-farm operation with
the optimum power bulge and torque back-up to
suit tractor duty cycles. The EGR-free design
facilitates lower total cost of ownership through
higher fuel efficiency, and less servicing with up to
1,000 hours of operation between oil drain intervals.”
Cummins’ global manufacturing capability
means that these engines can be manufactured in a
number of facilities (e.g. US, UK or China),
dependent on where the customer needs them. iVT
Author: Steven Nendick, marketing and communication
director for off-highway, Cummins
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“FOR STAGE V, CUMMINS TECHNOLOGY
SIGNIFICANTLY IMPROVED THE CAPABILITIES OF
OUR F3.8 ENGINE, WITH 33% MORE POWER AND
31% MORE TORQUE VERSUS ITS STAGE IV
PREDECESSOR”
Ann Schmelzer, general manager global agriculture, Cummins
/pivt