Truck & Off-Highway Engineering - August 2022 - 8

TECHNICAL INNOVATIONS
HYDRAULICS | ELECTRIFICATION
Rexroth expands software-controlled
hydraulics and electric portfolio
Hyliion's Hypertruck ERX powertrain provides 75 miles of electric range
and can achieve up to 1,000 miles of full range through the NG-fueled
onboard generator.
in the Hypertruck ERX
powertrain. " Attaining
EPA and CARB certifications
is a key step
on our production
path, " said Thomas
Healy, founder and
CEO of Hyliion. " I look
forward to working
with Cummins to get
our Hypertruck ERX
on the road and making
a positive impact
on the environment. "
Start of production
Bosch Rexroth recently invited TOHE to attend EMPAC, their
Electrified Mobile Product & Application Conference in
Schaumburg, Illinois. The show featured many of Rexroth's
latest electrification and software products for industrial and
off-highway equipment as well as educational sessions on the
direction of the brand moving forward.
Rexroth is endeavoring to work closely with customers to
offer products that not only suit their needs, but also provide
increased productivity, efficiency and durability. Some of those
products highlighted at EMPAC are detailed here.
Electrification through eLION
Rexroth's eLION is a product range aimed at the electrification
of commercial machines. The product line includes electric
motor-generators, inverters and accessories as well as
gearboxes, hydraulics and software. These components are
scalable in various sizes and applications of compact and
heavy machines for power ranges from 20 to 200 kW with
peak power output of 400 kW.
The eLION range can deliver a nominal torque of up to 1050
Cummins' ISX12N natural-gas engine is
being optimized as the onboard generator
for Hyliion's Hypertruck ERX powertrain.
for the Hypertruck ERX
with the ISX12N engine
is expected in late 2023. Low-cost refueling is a major benefit
of the powertrain solution, the companies note. According to
the U.S. Department of Energy's Alternative Fuels Data
Center, nearly 900 public compressed natural gas (CNG) fueling
stations are available in the U.S. as of 2021.
The aforementioned State of Sustainable Fleets report, authored
by clean-technology consulting firm Gladstein,
Neandross & Associates, found that fuel-cost savings is the
primary advantage for deploying NG units among 79% of the
surveyed fleets. Most fleets that have piloted or purchased
CNG trucks in the past two years also have reported equal or
better performance on emissions (96% of fleets), noise (87%),
fuel supply (67%) and total cost of ownership (57%) as compared
to diesel, according to the report.
Cummins also is expanding its NG offerings as part of its
" fuel-agnostic " ICE strategy announced earlier this year. These
platforms will use engine blocks and core components that
share common architectures - about 80% parts commonality,
according to Cummins - but are optimized for different lowcarbon
fuel types that include NG and hydrogen. The design
approach will be applied to B-, L- and X-Series engines, with
rollout of select units expected to begin in the 2024 timeframe.
Ryan Gehm
8 August 2022
Nm (775 lb-ft) and maximum torque of up to 2400 Nm (1770
lb-ft). The motor-generators are available in four sizes with
different lengths and winding configurations as well as in a
fast or standard speeds. Rexroth states that more than 80
configurations are available, and that all components meet
ISO 13849. eLION also offers inverters with up to 300 A continuous
current and high overload capacity and support DC
bus voltages from 400 to 850 V.
Rexroth states that the eLION motor-generators and inverters
are very robust and can be used in temperatures ranging from
-40 to +100°C (-40 to +212°F). Shock and vibration resistance
reportedly is up to 50 g and 10 g, respectively, and both components
comply with IP6K9K ingress protection. Production of the
eLION components is set to start this year.
" The aim is to use our technology to create a future with
higher efficiency, lower noise emissions and less air pollution, "
said Matthias Kielbassa, VP of Electrification of Mobile
Machines. " We have the right products at the right time and
Rexroth's eLION is a
product range aimed
at the electrification of
commercial machines.
TRUCK & OFF-HIGHWAY ENGINEERING
FROM TOP: HYLIION; CUMMINS; BOSCH REXROTH
Truck & Off-Highway Engineering - August 2022

Table of Contents for the Digital Edition of Truck & Off-Highway Engineering - August 2022
