View Single Post
Old 07-18-2013, 09:25 AM   #234 (permalink)
Master EcoModder
NeilBlanchard's Avatar
Join Date: May 2008
Location: Maynard, MA Eaarth
Posts: 7,907

Mica Blue - '05 Scion xA RS 2.0
Team Toyota
90 day: 42.48 mpg (US)

Forest - '15 Nissan Leaf S
Team Nissan
90 day: 156.46 mpg (US)

Number 7 - '15 VW e-Golf SEL
90 day: 155.81 mpg (US)
Thanks: 3,474
Thanked 2,949 Times in 1,843 Posts
When the battery is full, the genset is shut off completely.

With a multi-gear transmission, a engine while it is accelerating the vehicle is *by definition* almost never at peak efficiency. With proper gearing, it can achieve maximum efficiency on flat ground with no wind. Add an up hill and or a head wind, and the engine is forced off-peak. How much off peak? These are large factors not in the control of the driver.

Electric motors have a very flat efficiency curve that is 2-3X higher than an internal combustion engine. The recent serial hybrid *airplane* claims a 25% improvement in fuel mileage.

World?s First Aircraft With Serial Hybrid Electric Drive - Siemens Global Website

Why are we discussing the merits and challenges of various hybrids on this thread? We already have a thread on parallel hybrids:

And we have threads on serial hybrids:
Sincerely, Neil
  Reply With Quote