1. Hybrid Transaxle

2. Hybrid Transaxle Overview P112 type Components: MG (Motor Generator) 1
Power-dividing Mechanism (Planetary Gears)
Reduction Mechanism
Differential Mechanism
Fluid type: ATF WS
Capacity: 3.8 liters

3. Hybrid Transaxle Overview P112 type Chain-drive Sprocket
Planetary Gears
MG2
MG1

4. Hybrid Transaxle Overview P112 type Counter Drive Gear
Chain-driven Sprocket
Counter-driven Gear
Reduction Mechanism
Final Drive Pinion Gear
Final Ring Gear
Differential Mechanism

5. Hybrid Transaxle MG1 / MG2
Compact and lightweight, highly efficient AC500V motor generator
MG1
MG2

6. Hybrid Transaxle MG1 Main operations  Generator
When engine starting  Starter
Stator Coil
MG1
Rotor
Speed Sensor

7. Hybrid Transaxle
MG2
When driving  Main power to engine power (Starting off) or provides supplementary
When braking  Converts kinetic energy to electrical energy
MG2
Stator Coil
Rotor
Speed Sensor

8. Generator, Engine Starter
Hybrid Transaxle
MG1 / MG2
Specifications
Item
MG1
MG2
Type
Synchronous AC Motor 
Function
Generator, Engine Starter
Generator, Wheel Drive
Rated Voltage
Max. AC 500 V
Maximum Output
[kW (PS) / rpm] —
50 (68) / 1200 ~ 1540
Maximum Torque
[N·m (kgf·m) / rpm]
400 (40.8) / 0 ~ 1200
Maximum rpm [rpm]
10,000
6,700
Cooling System
Water-cooled

9. Hybrid Transaxle MG1 / MG2
MG1 / MG2 include stator coil, permanent magnet
Stator Coil
Permanent Magnet
(Rotor)

10. Hybrid Transaxle MG1 / MG2
MG1 / MG2 rotate via 3-phase alternating current

11. N S Hybrid Transaxle MG1 / MG2
Stator coil polarity and magnetic strength changes moment by moment N S

12. N S Hybrid Transaxle MG1 / MG2
Rotor of permanent magnet is rotated via attraction / repulsion from stator coil N S

13. Hybrid Transaxle
MG1 / MG2 N S

14. Hybrid Transaxle
MG1 / MG2 N S

15. Hybrid Transaxle Speed Sensor (Resolver)
Detects position, speed and direction of MG1 / MG2 rotors
Speed Sensor (for MG2)
Speed Sensor (for MG1)
MG1 and MG2 has speed sensor (resolver).

16. Hybrid Transaxle Speed Sensor (Resolver)
Comparing the S and C waveforms against the excitation coil reference waveform
Rotor
Excitation Coil -C -S +C +S S +S +C
The position of the rotor can be detected by comparing the S and C waveforms against the excitation coil reference waveform -S -C C
Excitation Coil
Manual
Auto

17. Hybrid Transaxle Transaxle Damper
Installed at location of conventional clutch
Reduces shock which occurs when kinetic energy is transmitted

18. Hybrid Transaxle Cooling System
Cooling circuit is used for both MG1 / MG2
Separate cooling system from engine
Reservoir
Pump
MG1 / 2
Radiator
Inverter
Reservoir Tank
Coolant Type: SLLC
Coolant maintenance schedule is same as engine coolant.
Electric Water Pump
Radiator

19. Hybrid Transaxle Oil Pump
Forced lubrication system via trochoid pump used to lubricate main shaft bearings
Oil pump functions when engine is being driven
Oil Pump
Oil pump driven by engine.