SAE Update - August 2021 - 16

FOCUS:
ELECTRIFIED VEHICLES
Electrifying our vehicles
and improving mobility
the wall plug), without improving
the average domestic electrical
service. This daily available
range of 80 miles per 2-hour
recharging event is greater than
the 53.8 miles of daily driving
undertaken by the average US
household (according to the
2017 National Household Travel
Survey conducted by the Federal
Highway Administration of the
US DOT); however, the
availability of suitable higherpower
home-based recharging is
clearly problematic for those
drivers dependent on street or
communal parking. Fast charging
is clearly required to support
longer-distance trips (bear in
mind that vehicle owners
typically buy their vehicles for
the " 99th
percentile " of utility and
most are intolerant of
compromised performance and
range).
The entire US vehicle fleet
traveled a total of 3.26 trillion
miles in 2019 (Bureau of
Transportation Statistics, 2021),
of which 90.2% of VMT was
driven by LD vehicles, 3.8% MD,
and 6.0% HD. Assuming an
average 300 Wh/mile required
for LD vehicles (at the generation
facility), 1.0 kWh/mile for MD
(such as delivery vans) and 2.0 to
16
August 2021
Chris Atkinson and the Mazda 787B, the 1991 Le Mans winning vehicle, at the
Mazda Museum in Hiroshima, Japan, 2019.
4.0 kWh/mile for HD (long haul tractor trailers or
transit buses), implies a total electrical energy
requirement of 1.363 T kWh if all 2019 miles were fully
electrified. This represents an additional 34% or so
required over and above the total 4.01 T kWh
electricity generated by all sources in the US in 2019-a
significant, yet achievable required increase.
Essentially, the US has traded an historical
dependence on foreign oil for a growing dependence
on foreign-sourced critical materials (even though the
US has been a net petroleum exporter since 2020).
As an industry, we need to address the R&D aspects
of these emerging supply constraint issues from a
multiplicity of angles, including basic materials
research, vehicle and component design,
manufacturing, systems integration, mobility system
optimization, supply chain management, recycling,
and alternative sourcing options.
The constraints to be considered in the system
optimization include materials and components
supplies, ideal deployment scenarios for BEVs,
recharging access and convenience, and system costs,
UPDATE

SAE Update - August 2021

Table of Contents for the Digital Edition of SAE Update - August 2021

SAE Update - August 2021 - Cov1
SAE Update - August 2021 - Cov2
SAE Update - August 2021 - Cov3
SAE Update - August 2021 - 1
SAE Update - August 2021 - 2
SAE Update - August 2021 - 3
SAE Update - August 2021 - 4
SAE Update - August 2021 - 5
SAE Update - August 2021 - 6
SAE Update - August 2021 - 7
SAE Update - August 2021 - 8
SAE Update - August 2021 - 9
SAE Update - August 2021 - 10
SAE Update - August 2021 - 11
SAE Update - August 2021 - 12
SAE Update - August 2021 - 13
SAE Update - August 2021 - 14
SAE Update - August 2021 - 15
SAE Update - August 2021 - 16
SAE Update - August 2021 - 17
SAE Update - August 2021 - 18
SAE Update - August 2021 - 19
SAE Update - August 2021 - 20
SAE Update - August 2021 - 21
SAE Update - August 2021 - 22
SAE Update - August 2021 - 23
SAE Update - August 2021 - 24
SAE Update - August 2021 - 25
SAE Update - August 2021 - 26
SAE Update - August 2021 - 27
SAE Update - August 2021 - 28
SAE Update - August 2021 - 29
SAE Update - August 2021 - 30
SAE Update - August 2021 - 31
SAE Update - August 2021 - 32
SAE Update - August 2021 - 33
SAE Update - August 2021 - 34
SAE Update - August 2021 - 35
SAE Update - August 2021 - 36
SAE Update - August 2021 - 37
SAE Update - August 2021 - 38
SAE Update - August 2021 - 39
SAE Update - August 2021 - 40
SAE Update - August 2021 - 41
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