Automotive Engineering - November/December 2020 - 2

EDITORIAL

NY, NJ, OH:
Ryan Beckman
+1.973.409.4687
rbeckman@techbriefs.com

Bill Visnic
Editorial Director
Bill.Visnic@sae.org

EDITORIAL
Warm socks for the EV options list
" Tips for Improving Range When Using
the Climate Control System " are listed
on pages 46-47 of the 2020 Hyundai
Kona EV's owner's manual. I'll wager
that every electric-vehicle owner's
booklet or digital download contains
info similar to Hyundai's, including variations of this warning: " When using the
heater during cold weather or driving at
high speed, the high-energy battery
consumes a lot more electricity. This
may reduce the range significantly. "
It's still fairly rare for automakers to
offer up their latest EVs for
media test drives when the
mercury begins to fall in the
northern climes. Batteries, no
matter their cell chemistry,
don't like thermal extremes.
Cold particularly puts a lessthan-ideal face on electrification. But the electric Kona
that found its way to my
driveway seemed perfect for
getting me to an OEM vehicle
launch about an hour away.
The November morning was
sunny and brisk (44°F ambient) and the
Kona's 360-V, 64-kW-h battery pack was
fully charged with 252 miles' (405 km)
worth of electrons rarin' to go. The 120mile (193-km) round trip would be accomplished with range to spare.
No sweat, except for two variables:
My destination required a highway
route if I wanted to arrive on time. And
soon after leaving home, my chilled
toes and hands demanded cabin heat.
Therein lies the most nagging compromise of EVs. Sustained 75-to-80-mph
(120-to-128-km/h) freeway driving sucks
the juice at an alarming rate. Range-toempty calculations are often imprecise.
And the colder the outside air, the more
the driver is forced to trade warm feet
and fingers for reaching the destination
without a tow truck. I opted for the latter, after turning on the heater and seeing the estimated range immediately
plummet by 12 miles.
Upon arrival, I recounted my frustration

to an engineer at the event who chuckled:
" That's why ICEs are known as 'heat engines'! " he quipped. My frigid toes wished
for a hot turbocharger ahead of the firewall instead of a DC converter.
For the return trip, the Kona EV's range
estimator reported a 46% battery SOC.
The equivalent half-tank of gasoline, even
in a big SUV, would have taken me much
further than 60 miles (96 km). This made
me worry. The air temperature had
dropped. My route home included a construction zone and it was getting dark. I
accepted the drive would
require the Kona and me to
loaf in the right lane, at
greatly reduced velocity, taking far longer than it should
have. Nothing like range anxiety and frosty feet.
Readers who are involved
with EV programs are likely
thinking, " Turn on the seat
heater! " That I did, recalling
former GM Volt engineering
exec Larry Nitz's coaching.
Heating the seats rather
than the entire interior, Larry advised,
warms the body's core and conserves
range. Sure, but it doesn't warm the extremities. For passengers, the ride can
be equally chilly, as the Kona manual
admonishes: " When possible, use the
DRIVER ONLY feature on the climate
control system. This will discontinue airflow to the passenger side and reduce
climate control power consumption. "
Not to pick on Hyundai, because the
Kona EV is a well-executed, high-value
product. Most, if not all contemporary
EVs have similar speed-comfort-range
tradeoffs that many believe are impeding the market's transition to electrification. Battery and HVAC technologies to
end the self-sacrifices are a missing
piece of the Electrification puzzle. Until
their introduction, however, EV drivers
in the Upper Midwest and elsewhere
will have to buck up, slow down... and
pull on an extra pair of socks.
Lindsay Brooke, Editor-in-Chief

Most contemporary EVs
have speedcomfort-range
tradeoffs that
are impeding
the market's
transition to
electrification.

2 November/December 2020

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AUTOMOTIVE ENGINEERING



Automotive Engineering - November/December 2020

Table of Contents for the Digital Edition of Automotive Engineering - November/December 2020

Automotive Engineering - November/December 2020
Editorial: Warm socks for the EV options list
Supplier Eye
Technology Report
New SAE wireless charging standard is EV game-changer
Tula DMD aims for more-efficient e-machines
Multiphysics helps transform modeling, simulation
Is the camshaft being timed out?
New Magna seat puts connectivity in the second row
Road Ready
BMW reveals its first “M” performancebadged two-wheeler
Volkswagen readies new-generation Golf R
Volkswagen reveals its ‘people’s’ EV
Answering the fuel-cell compressor question
Tire pressure’s impact on EV driving range
Product Briefs
Q&A
Companies Mentioned, Ad Index
Automotive Engineering - November/December 2020 - Intro
Automotive Engineering - November/December 2020 - Automotive Engineering - November/December 2020
Automotive Engineering - November/December 2020 - Cover2
Automotive Engineering - November/December 2020 - 1
Automotive Engineering - November/December 2020 - Editorial: Warm socks for the EV options list
Automotive Engineering - November/December 2020 - 3
Automotive Engineering - November/December 2020 - Supplier Eye
Automotive Engineering - November/December 2020 - 5
Automotive Engineering - November/December 2020 - New SAE wireless charging standard is EV game-changer
Automotive Engineering - November/December 2020 - 7
Automotive Engineering - November/December 2020 - Tula DMD aims for more-efficient e-machines
Automotive Engineering - November/December 2020 - Multiphysics helps transform modeling, simulation
Automotive Engineering - November/December 2020 - 10
Automotive Engineering - November/December 2020 - 11
Automotive Engineering - November/December 2020 - New Magna seat puts connectivity in the second row
Automotive Engineering - November/December 2020 - 13
Automotive Engineering - November/December 2020 - BMW reveals its first “M” performancebadged two-wheeler
Automotive Engineering - November/December 2020 - 15
Automotive Engineering - November/December 2020 - Volkswagen readies new-generation Golf R
Automotive Engineering - November/December 2020 - Volkswagen reveals its ‘people’s’ EV
Automotive Engineering - November/December 2020 - 18
Automotive Engineering - November/December 2020 - 19
Automotive Engineering - November/December 2020 - 20
Automotive Engineering - November/December 2020 - Answering the fuel-cell compressor question
Automotive Engineering - November/December 2020 - 22
Automotive Engineering - November/December 2020 - Tire pressure’s impact on EV driving range
Automotive Engineering - November/December 2020 - 24
Automotive Engineering - November/December 2020 - Product Briefs
Automotive Engineering - November/December 2020 - 26
Automotive Engineering - November/December 2020 - 27
Automotive Engineering - November/December 2020 - 28
Automotive Engineering - November/December 2020 - 29
Automotive Engineering - November/December 2020 - Q&A
Automotive Engineering - November/December 2020 - 31
Automotive Engineering - November/December 2020 - Companies Mentioned, Ad Index
Automotive Engineering - November/December 2020 - Cover3
Automotive Engineering - November/December 2020 - Cover4
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