- First Name
- Mike
- Joined
- Nov 14, 2021
- Threads
- 14
- Messages
- 266
- Reaction score
- 315
- Location
- North Idaho
- Vehicle(s)
- Subaru
- Engine
- 2.5L Hybrid
- Thread starter
- #16
Thanks for that. So the traction motor is the secret sauce to keep the ICE in is rpm sweet spot, I'd assume.Your differential analogy is pretty good expalantion!
The variable ratios are effected by the two motors working together with the engine. It can be hard to grasp, but think of it as balancing the speed of three things, an engine and two motors (one of which is connected to the wheels). One could go up, others could go down… even to a stop. It’s an infinite combination of those three.
It’s a super simple transmission with few moving parts. No bands or frequently used clutches to contaminate fluid over time either. No external starter motor with gears or alternator with belts either. There is literally nothing to wear out on this system, other than maybe a shaft seal.
This power split planetary system is also much simpler and more efficient than many other hybrids using a regular geared transmission with a motor slapped on the front.
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