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Old 12-23-2010, 07:37 PM   #16 (permalink)
Frank Lee
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Blue - '93 Ford Tempo
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I beg to differ.

You see, when accelerating, what- 10x? more work is being done per unit of time vs steady state cruising.

It has been well established that ICEs are at max efficiency i.e. doing the most work per unit of fuel burned when they are at or near WOT... NOT when the throttle is nearly closed and they are loafing along.

They are at or near WOT when accelerating, and the throttle is nearly closed in comparison at steady state cruise.

So it stands to reason that in spite of the fe gauge showing the lowest mpgs during accel, that is because the amount of work being done per unit of fuel is not displayed. And it's lower because of being in lower gears.

Then when you look at electric propulsion you see that acceleration almost disproportionately draws the batteries down, while if the vehicle was to be accelerated by other means and the electric drive used only for steady state cruise, the range would be extended enormously. This premise has been affirmed to me just about every time I use my electric bicycle- when I pedal a bit whenever acceleration is desired it MAJORLY saves on the batteries.

So.... for max efficiency I think ICEs should be used for acceleration and electric should be used for cruise.

Last edited by Frank Lee; 12-23-2010 at 07:48 PM..
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