[Vwdiesel] negative aspects of burning water

[James Hansen]

> 
> I saw one overall number that stated the regenerative braking -> battery storage overall 
> efficiency is about 75%.  Probably looking at a 5%-10% loss through each stage of the system.

That's pretty good numbers actually.
thanks Roger

> 
> I wonder what you could do with a highly optimized diesel engine built to run at a single, 
> constant speed feeding an alternator similarly designed.  Then have that feed an electric 
> motor and batteries.  Size the engine to just have enough power for highway cruising.
> 

I have a genset that runs like that- a 9hp 30 amp unit that runs on the 
smell of an oily rag.  I still think you can do better with less steps- 
direct usage of the power produced by a moderately sized engine.

  Trouble is, stuff like my truck is ridiculously overpowered.  Simply 
matching the drivetrain to the circumstances is a great boost.

Since you're talking small motors, I would think TWO gensets would be 
your answer.  One bigger for cruise on no more than 2% grade, one 
smaller to help out if you get hilly, more than normal.
-james