View Single Post
Old 07-16-2013, 01:33 PM   #225 (permalink)
P-hack
Master EcoModder
 
P-hack's Avatar
 
Join Date: Oct 2012
Location: USA
Posts: 1,408

awesomer - '04 Toyota prius
Thanks: 102
Thanked 252 Times in 204 Posts
The main problem in this discussion (semi-hijack) is that we aren't looking at a typical situation, that somehow the range extender (which is pre-determined once you leave your driveway) is still malleable, so that leads to a lot of confusion about somehow the generator being more efficient. The efficiency of the gas generator depends on load and you have to pick a scenario, the 5 speed (or efficiency optimized cvt) can adapt in the hands of a capable driver who knows a thing or two about bsfc and hypermiling and situational awareness.

Pick a scenario (i.e. driving 1000 miles a few times a year), select the components for your generator system with known losses under various loads/speeds and lets compare efficiency (and cost if you like).

Consider also that lots of range extended miles offsets a higher initial cost of a range extender to a degree, but the efficiency becomes even more critical in terms of dollars with lots of miles too.
  Reply With Quote
The Following User Says Thank You to P-hack For This Useful Post:
IamIan (07-16-2013)