Dig the ZF8 in my RAM a lot. Did not like the 10 speed in my F-150, ZF is much better.
Dig the ZF8 in my RAM a lot. Did not like the 10 speed in my F-150, ZF is much better.
The idea was that you need a certain velocity and torque to hold the drive train at a given speed, and instead of using reconfigurable gearsets for that, you use a differential, and one of the output shafts is sometimes an input shaft. One of the output shafts is attached to the wheels, the other to a motor. At some speeds output shaft B is stationary. To accelerate, you feed power into the motor and now it's speeding up shaft A. At lower speeds, you bleed power off of shaft B by running the motor as a dynamo, using it to charge the batteries and run auxiliary equipment.
In the hybrid version there was an ICE on the input shaft (or an ICE and a ganged electric motor) but on a full electric you could run two motors with different torque curves and balance the inputs for each speed.
Honda's old system, 'IMA', which was a traditional ICE drivetrain with a motor assist. They abandoned it because mild hybrids don't really deliver a good value. It's a lot more cost for not very much improvement in economy.
Honda's new system, E-drive, usually operates like an EV with a generator attached, but it also has a lock-up clutch to allow the engine to direct drive the wheels in cruising conditions.
3-motor actually. https://eahart.com/prius/psd/
2x Electric Motors + 1x ICE motor. Its a bit confusing but there's a lot of Youtube demos, webpage-demos, and simulations to help you understand how it all works.