On 29/09/2017 22:25, Tim Streater wrote:
In article , Theo
wrote:

In uk.d-i-y Peter Hill wrote:

The Toyota device is called a "power split device".

Planet gearbox has 3 shafts.
1: IC engine.
2: Motor/gen 1.
3: Motor/gen 2 and output to diff.

There's a nice video of the parts in action he
https://www.youtube.com/watch?v=ZmHpSyTsfm0

Thanks. That clarifies things a lot. What is nice too is that you're
not just adding weight to the standard petrol-only setup. Two electric
motors are added, but you delete the starter and alternator. Looks like
the gear box is effectively made much smaller/simpler too.



The cludge of these stop-start vehicles is terrible: extra heavy duty
battery and starter (god knows what they will cost, I do know you need
the ecu reprogrammed when you get a new special type battery). They
sound terrible when you drive them too.

Prius engine is spun up so nicely in comparison, you scarcely know it
has been started