I thought this a neat plug in hybrid solution by BMW substituting electric motor for torque convertor in their 8HP ZF auto box
![[Linked Image]](https://i.imgur.com/hxh1tmL.jpg)
Take your point about matching diesel engine characteristics to use in hybrid environment. I remember very many years ago when the hybrid concept was first muted how the IC engine could be designed to achieve greater efficiency by running near constant rpm and load whilst battery power filled in the gaps.