Truck & Off-Highway Engineering - October 2022 - 23

ELECTRIFICATION FEATURE
" Our focus was to build and
integrate a highly efficient
drive unit that gives the
vehicle the same capabilities
as its ICE counterpart. "
- Jörg Trampler, ZF
Schaeffler engineers assert that their design also reduces
the number of required hoses and cables, meaning
less energy is lost due to heat transfer. " The greatest
advantage of the [integrated] system is the optimized
interaction of the individual subsystems, " Schröder explained.
The control system efficiently transfers heat
from components that need to be kept at a stable temperature,
such as drive-system electronics and motors,
and utilizes it for tasks such as warming the interior. The
system also regulates the temperature of the battery to
maximize vehicle range and reduce charge times.
The thermal-management system is charged with
natural carbon dioxide refrigerant. Schaeffler states
that carbon dioxide refrigerant has less environmental
impact than conventional refrigerant and that its physical
properties are more efficient for heating and cooling.
The company claims that up to a 96% overall efficiency
rating is possible for this system, which translates
into increased range.
Schaeffler manufactures components for electric
axles at locations in Hungary and China. A production
facility is being set up in Massachusetts where hybrid
modules already are being manufactured, and a new
lead plant for electric motors now is being built in
Bühl, Germany.
Allison powers up commercial trucks
On the commercial end of the eAxle spectrum, Allison
Transmission has begun exhibiting its eGen Power
axle at trade shows across Europe and North America.
Allison's eAxle lineup consists of four units, the 100S,
130S (revealed at IAA Transportation in Hanover,
Germany, in late September), 100D and 130D. These
axles are intended to cover the needs of the global
medium- and heavy-duty truck and bus markets with
a range of weight ratings and power outputs.
The 100S is the lightest-duty axle and features a
single electric motor rated at 227 kW @ 650V for continuous
operation and 326 kW of peak output. The
100S has a maximum wheel torque of 26,177 Nm
(19,307 lb-ft) and a GAWR of 23,000 lb (10,433 kg). It
was designed principally for medium and tandem-axle
heavy-duty vehicles in North American markets.
TRUCK & OFF-HIGHWAY ENGINEERING
Hino Trucks has commenced testing and validation of Allison's next
generation eGen Power 100D in its XL series heavy-duty BEVs.
The new eGen Power 130S was designed specifically to support the
heavier 13-ton gross axle weight rating that often is required by commercial
vehicles in Europe and Asia-Pacific markets. The 130S uses a
single motor and a two-speed parallel-axis gear architecture that
helps to maximize energy recovery through 100% regenerative braking
capability.
The 100D carries the same weight rating as the 100S but is a
dual- motor design with a max torque output of 47,018 Nm (34,678
lb-ft) and a 454-kW continuous/652-kW peak power rating. The
130D maintains the same core components, kW rating and peak
output as the 100D, but a greater GAWR of 28,660 lb (13,000 kg).
As with the 130S, the 130D was specifically designed for the
European and Asia-Pacific markets.
October 2022 23
Schaeffler claims that
its eAxle requires significantly
less space than non-integrated systems.
FROM TOP: SCHAEFFLER; ALLISON
Truck & Off-Highway Engineering - October 2022

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