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View Diary: BREAKING: PG&E quits US Chamber over climate change (283 comments)

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  •  Li-ion EVs don't lose much from starting and (0+ / 0-)

    stopping.  They're more efficient at regen than conventional hybrids.  A Prius only puts back about 30% of its energy back into the pack, while a Tesla Roadster puts back 60-70%.  The main limitation of EVs is in high speeds, which are virtually absent from the LA4 cycle.  Again, which is why it was chosen by Nissan.  Of all the major cycles, it gives the best results for EVs.

    Here's a graph for you of how EVs respond to speed.

    •  thanks for the information (0+ / 0-)

      And that's why I treat my Prius like a space ship, just firing the booster for several seconds, then coasting!  That's the way to get 100+ mpg with a Prius, but even short of extreme hyper-miling the Prius gets excellent mileage with the streamlined shape and excellent coasting ability.

      So it sounds like the Prius could be upgraded to 70+ mpg with Li-ion batteries, and maybe a plug-hybrid version of the Prius will be out by the time the slumbering taxpayer fed GM finally spews out a few thousand Volts.

      Aftermarket plug-hybrid Prius:

      The conversion package increases the car’s fuel mileage with the addition of a 170-pound high-energy rechargeable plug-in lithium-ion battery module.

      The lithium-ion battery can power the Prius for 40 miles, then it needs a recharge. Until then, the Prius goes back to using the factory battery as well as the gasoline engine.

      Plug Hybrid Prius

      So 40 miles for $.60 worth of electricity, that is  1.5 cents per mile for fuel, I pay about 5 cents per mile now for gasoline.

      "I like to know what I'm talking about before I speak." - Barack Obama, 3-24-09

      by MD patriot on Wed Sep 23, 2009 at 02:00:49 PM PDT

      [ Parent ]

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