IEEE Electrification Magazine - June 2020 - 16

There is a natural
tradeoff between
electrical system
power, system
architecture, and
vehicle parameters
that enables
energy recovery.

pumping loss, and acceleration
assist. Engine start-stop reduces
fuel consumption, often by a few
percentages, by enabling engines to
be off at a stop and coasting. Another 5% of energy savings can be ob--
tained through opportunity-based
energy recuperation, which may be
used to power accessories, electric
driving, and eBoosting. Depending
on the architecture, the 48-V solution offers electric driving (P0 systems cannot really drive electrically)
at low- and peak-speed scenarios

Figure 11. The BorgWarner P2 on-axis system.

P0

P2

P3

P4

Figure 13. The MGi and P solutions.

16

I E E E E l e c t r i f i cati o n M agaz ine / J UN E 2020

to obtain an additional 4% fuel-consumption benefit.
Typically, tradeoffs between efficiency and performance exist. In Figure 8,
the benefits of increased performance
and fuel economy are compared for a
mixture of P0, P2, and eBooster implementation and downsizing scenarios.
The P0 system alone offers minimal
performance increases. When the P0 is
integrated with an eBooster or engine
downsizing, both performance and
efficiency are improved. The P2 system offers the strongest performance

Figure 12. The BorgWarner P2 off-axis system example.



IEEE Electrification Magazine - June 2020

Table of Contents for the Digital Edition of IEEE Electrification Magazine - June 2020

Contents
IEEE Electrification Magazine - June 2020 - Cover1
IEEE Electrification Magazine - June 2020 - Cover2
IEEE Electrification Magazine - June 2020 - Contents
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https://www.nxtbook.com/nxtbooks/pes/electrification_march2022
https://www.nxtbook.com/nxtbooks/pes/electrification_december2021
https://www.nxtbook.com/nxtbooks/pes/electrification_september2021
https://www.nxtbook.com/nxtbooks/pes/electrification_june2021
https://www.nxtbook.com/nxtbooks/pes/electrification_march2021
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https://www.nxtbook.com/nxtbooks/pes/electrification_september2018
https://www.nxtbook.com/nxtbooks/pes/electrification_june2018
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https://www.nxtbook.com/nxtbooks/pes/electrification_september2017
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https://www.nxtbook.com/nxtbooks/pes/electrification_september2016
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https://www.nxtbook.com/nxtbooks/pes/electrification_march2015
https://www.nxtbook.com/nxtbooks/pes/electrification_june2015
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https://www.nxtbook.com/nxtbooks/pes/electrification_june2014
https://www.nxtbook.com/nxtbooks/pes/electrification_september2014
https://www.nxtbook.com/nxtbooks/pes/electrification_december2014
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