http://www.innas.com/Assets/files/Hydrid%20brochure.pdf
Take the time to read this, PLEASE-IT IS CRUCIAL. It's 1.5 Meg and covers just about everything.
My design is self adjusting and needs no transformer. The INNAS design uses fixed displacement in wheel drives and requires a transformer. Losses are higher due to continuous fluid movement in fixed displacement motors. Mine has no fluid movement without any stroke.
Fluid movement only occurs if your are applying or recovering energy, with my design.
I did not include a transformer in my design because it does not exist. Stroke adjustment at each in wheel drive accomplishes infinite variations in displacement.
DCB while you may not care about the speed variations involved in P&G, other drivers around you can get really aggravated with your actions. Not relevant if you are not interfering with their driving, as would be if you are alone on the road, but dangerous in high traffic density situations where others do not understand your actions and their unpredictability from their perspective.
Pay particular attention to the engine, which is the same in both vehicles. In fact the vehicles are identical other than the power train changes. Also a fairly low power efficient diesel engine.
dcb, also thanks for rejoining the discussion, keep the questions coming.
regards
Mech