Automotive Engineering - September 2021 - 33

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ELECTRIFICATION FEATURE
CAN
North American
e-motors director
Dan Sayre sees
opportunities in inwheel
motors.
Simultaneously Display
and Record 23 SPNs
serve the many different vehicle applications - passengercar,
high-performance, commercial. We want to have our
offerings match those applications within the package constraints,
absolute power and torque requirements, specific
NVH and cost targets. We have different technologies in our
e-motor topology offerings, as well as our locations and production
methods, to adapt to whatever the customer needs
for their specific application. "
One area of e-motor development that continues to interest
Sayre's team is in-wheel motors (IWMs; see August 2021
Automotive Engineering cover story). Schaeffler is considered
a leader in the field, and Sayre is excited about the
technology's market opportunities, such as local delivery
and robocabs.
" We've been working on IWMs for over a decade with multiple
prototypes and demo vehicles, and we're working on
some related business, " he said, detailing the vehicle applications
where in-wheel drive makes the most sense for transporting
cargo or people - especially at lower speeds. IWMs
offer greater vehicle maneuverability in tight spaces and moving
the powertrain out to the corners optimizes the vehicle's
load floor, he explained.
" In our chassis and wheel-bearing simulations, we've taken
the lessons learned and applied them to our in-wheel drive
product, " he said. " And we've actually gone to the point of
testing our development vehicles with curb strikes where
we've bent the road wheel but did not damage the in-wheel
motor. Industry is seeing more use cases for IWMs, as people
see more demonstrations of this topology and we take out
mass, cost and size in future development. "
Looking forward 10 years, Sayre sees even greater competition
in the e-mobility space, and a Schaeffler Group that " will
have a much larger team than today to meet the industry's
significant growth on e-mobility and electrification. "
AUTOMOTIVE ENGINEERING
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Automotive Engineering - September 2021

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