Parking lock represented by spacer (not in the adv. engineering focus)
2013.4.19-21 T/M Symposium Suzhou
No sealing between motor and reducer
Agenda
Driveline electrification, Introduction Integration approach in Hybrid drivelines Electric Vehicle Drive Solution First Experiences from test rig and driving Summary
Full Hybrid parallel (serial, power split)
Plug-In-Hybrid Electric Vehicle
Range Extension
ICE Driving
Stop/Start
Regeneration/ Electric
Boosting
Launch
Electric Driving (regen energy)
Compact, light weight: 45 kg Power density: 2,0 kW/kg Optimized acoustics Scalable up to:
130 kW / 2.000 Nm axle torque
2013.4.19-21 T/M Symposium Suzhou
50
Motor weight [kg]
© ZF Friedrichshafen AG, 2013
40
30 PM-SM
20
Design focus
10
Equivalent motor speed at 150 km/h [rpm]:
0
8.000
13.000
21.000
26.000
6
10
16
20
Final eDrive ratio i (–)
Optional differentiation characteristics:
Changed requirements for chassis and drive train
© ZF Friedrichshafen AG, 2013
Efficiency
Cost advantages
Low noise
Two speeds vs. single speed
Japan 1,0 NEDC 10-15 FTP72
Baseline: Single-Speed Transmission
[%]
Route Route Cust. 1 Cust. 2
AMS Route
-1,1% - +0,3%
Energy consumption with 2-speed transmission compared to 1 speed
460 x 325 x 250 mm
© ZF Friedrichshafen AG, 2013
EVD1 – Sectional View of prototype
Spur gear
Planetary gear set
High-speed motor
© ZF Friedrichshafen AG, 2013
2013.4.19-21 T/M Symposium Suzhou
Agenda
Driveline electrification, Introduction Integration approach in Hybrid drivelines Electric Vehicle Drive Solution First Experiences from test rig and driving Summary
-50
-70
-90
T_Mot [Nm]
Torque [Nm]
© ZF Friedrichshafen AG, 2013
2013.4.19-21 T/M Symposium Suzhou
Speed [rpm]
EVD1 demonstration vehicle
ZF Stromos with EVD1
Shifting quality
Response characteristics
Changes in vehicle requirements due to hifting strategy
Low speeds in city traffic
Limited maximum speed
Two speeds only make sense for a high demand both for top speed and drag force
2013.4.19-21 T/M Symposium Suzhou
ZF’s EVD1 for Small Passenger Cars
Specifications:
1.500 3.000 5.000 7.000 9.000 11.000 13.000 15.000 17.000 19.000 21.000
90
70
50
40
>97%
30
20
15
>96%
10
5 -5
>94%
90-94%
-10
-15
EM efficiency (calculated)
-20
-30
-40
Electric Driving (with external energy)
Pure Electric Driving
Step 0
Electric driving speeds
–
small
Step 1
Step 2
medium
all
ICE driving speeds
all
– / some
2013.4.19-21 T/M Symposium Suzhou
2013.4.19-21 T/M Symposium Suzhou
© ZF Friedrichshafen AG, 2013
Driveline Electrification
Terms, Classes, Functions, Steps
(Micro Mild Hybrid
Hybrid)
parallel
E-Vehicle based on Suzuki Splash / Opel Agila
Replacement of the existing E-drive by E-drive EVD1 and ZF inverter
40.000
30
Effect: light-weight and compact solution due to high speed approach
2013.4.19-21 T/M Symposium Suzhou
Analysis of relevant operation modes
Wheel torque [Nm]
2013.4.19-21 T/M Symposium Suzhou
© ZF Friedrichshafen AG, 2013
EVD1
Efficiency map of transmission
Transmission efficiency [%], measured data
n_Mot [rpm]
Driving resistance Constant power operation
-1.500 0
200 400 600 800 1.000 1.200 1.400 1.600
Wheel speed [1/min]
2013.4.19-21 T/M Symposium Suzhou
Energetic benefit in EV Drive
© ZF Friedrichshafen AG, 2013
Agenda
Driveline electrification, Introduction Integration approach in Hybrid drivelines Electric Vehicle Drive Solution First Experiences from test rig and driving Summary
2013.4.19-21 T/M Symposium Suzhou
© ZF Friedrichshafen AG, 2013
Electric mobility drivelines
Differences for the OE / Tier-1 supplier
Driveline USPs are significantly reduced:
-1,0
-2,0
© ZF Friedrichshafen AG, 2013
-3,0 -4,0
Ideal Two-Speed Gear Box (optimized cycle, loss-free shift operation)
Two-Speed Gear Box subject to real conditions (losses, shift strategy, extra mass, synchr. power, …)
First Results from driving and testing ZF‘s Electric Vehicle Drive EVD1
Stephan Scharr , Dr. Bernd Vahlensieck, Dr. Karl-Hermann Ketteler, Robert Pauli, Joachim Cichy Presented by Dr. Sven Laemmermann