IEEE Electrification Magazine - June 2020 - 13

eBooster
eBooster

Ladeluftkühler
Charge Air Cooler

Abgasturbolader
Turbocharger

Bypass
Wastegate

Figure 2. The eBooster system architecture. (Source: BorgWarner.)

140
Recuperated Energy
Drive Energy
Vehicle Speed
Rekup Power

6,000
5,000
4,000

120
100
80

3,000

60

2,000

40

1,000

20

0
0

200

400

600
Time (s)

800

1,000

Vehicle Speed (km/h)
Recuperation Power(kW)

Drive Energy,
Recuperation Energy (kJ)

7,000

0
1,200

Figure 3. The NEDC with 20.2% recuperation.

10,000
9,000
8,000
7,000
6,000
5,000
4,000
3,000
2,000
1,000
0

100
90
80
70
60
50
40
30
20
10
0
800

Vehicle Speed (km/h)
Recuperation Power (kW)

Drive Energy,
Recuperation Energy (kJ)

applications not only provide
increased power for the proliferation of electrified vehicle systems but also significantly reduce
CO2 emissions.
Mild hybrid electrification architectures are given designations
related to their position (P) in the
vehicle (Figure 1), as follows.
xx
P0 is typically connected to the
crankshaft at the front of the
engine by a belt or chain.
xx
P1 is connected to the crankshaft at the back of the engine.
xx
P2 is connected to the transmission input between the
engine and transmission with a
clutch to disconnect the engine.
xx
P3 is mounted between the
transmission and axle.
xx
P4 is a separately driven axle.
xx
The power split (PS) is left to
the realm of a strong hybrid.
Each P architecture offers a
unique set of benefits. P0 is the easiest to integrate. The drive system
replaces the conventional alternator and couples through a similar
belt train or chain drive. Additional
motoring or generating crankshaft
torques are available, upward of
150 Nm at low engine speeds. The
system today is typically limited to
15 kW because little fuel economy
is gained at higher power levels. In
combination with an eBooster system, the engine can be downsized
for both launch and peak power.
The P1 architecture is similar in
performance to the P0 because it
is also connected to the engine
crankshaft. Torque levels can be
increased if desired because belt
concerns are eliminated. The P1
machine allows the elimination of
the starter.
The P2 architecture offers significant torque and power increases at
the crankshaft, with power levels of
25 kW or more. The starter can be
eliminated in this configuration. Energy recuperation and electric driving
are more effective because the engine
can be decoupled from the propulsion
system. The P3 and P4 architectures,
which are more closely located to the

0

100

200

300

400
500
Time (s)

600

700

Figure 4. The HWY with 5.6% recuperation.

	

IEEE Elec trific ation Magazine / J UNE 2 0 2 0

13



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
IEEE Electrification Magazine - June 2020 - 2
IEEE Electrification Magazine - June 2020 - 3
IEEE Electrification Magazine - June 2020 - 4
IEEE Electrification Magazine - June 2020 - 5
IEEE Electrification Magazine - June 2020 - 6
IEEE Electrification Magazine - June 2020 - 7
IEEE Electrification Magazine - June 2020 - 8
IEEE Electrification Magazine - June 2020 - 9
IEEE Electrification Magazine - June 2020 - 10
IEEE Electrification Magazine - June 2020 - 11
IEEE Electrification Magazine - June 2020 - 12
IEEE Electrification Magazine - June 2020 - 13
IEEE Electrification Magazine - June 2020 - 14
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IEEE Electrification Magazine - June 2020 - 64
IEEE Electrification Magazine - June 2020 - Cover3
IEEE Electrification Magazine - June 2020 - Cover4
https://www.nxtbook.com/nxtbooks/pes/electrification_december2022
https://www.nxtbook.com/nxtbooks/pes/electrification_september2022
https://www.nxtbook.com/nxtbooks/pes/electrification_june2022
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
https://www.nxtbook.com/nxtbooks/pes/electrification_december2020
https://www.nxtbook.com/nxtbooks/pes/electrification_september2020
https://www.nxtbook.com/nxtbooks/pes/electrification_june2020
https://www.nxtbook.com/nxtbooks/pes/electrification_march2020
https://www.nxtbook.com/nxtbooks/pes/electrification_december2019
https://www.nxtbook.com/nxtbooks/pes/electrification_september2019
https://www.nxtbook.com/nxtbooks/pes/electrification_june2019
https://www.nxtbook.com/nxtbooks/pes/electrification_march2019
https://www.nxtbook.com/nxtbooks/pes/electrification_december2018
https://www.nxtbook.com/nxtbooks/pes/electrification_september2018
https://www.nxtbook.com/nxtbooks/pes/electrification_june2018
https://www.nxtbook.com/nxtbooks/pes/electrification_december2017
https://www.nxtbook.com/nxtbooks/pes/electrification_september2017
https://www.nxtbook.com/nxtbooks/pes/electrification_march2018
https://www.nxtbook.com/nxtbooks/pes/electrification_june2017
https://www.nxtbook.com/nxtbooks/pes/electrification_march2017
https://www.nxtbook.com/nxtbooks/pes/electrification_june2016
https://www.nxtbook.com/nxtbooks/pes/electrification_december2016
https://www.nxtbook.com/nxtbooks/pes/electrification_september2016
https://www.nxtbook.com/nxtbooks/pes/electrification_december2015
https://www.nxtbook.com/nxtbooks/pes/electrification_march2016
https://www.nxtbook.com/nxtbooks/pes/electrification_march2015
https://www.nxtbook.com/nxtbooks/pes/electrification_june2015
https://www.nxtbook.com/nxtbooks/pes/electrification_september2015
https://www.nxtbook.com/nxtbooks/pes/electrification_march2014
https://www.nxtbook.com/nxtbooks/pes/electrification_june2014
https://www.nxtbook.com/nxtbooks/pes/electrification_september2014
https://www.nxtbook.com/nxtbooks/pes/electrification_december2014
https://www.nxtbook.com/nxtbooks/pes/electrification_december2013
https://www.nxtbook.com/nxtbooks/pes/electrification_september2013
https://www.nxtbookmedia.com