From the
X-Prize Knockout Round:
Quote:
The average of the 12 vehicles using electric drive MPGe (I'm including the FVT in this [which is a serial hybrid]) was 134.7MPGe
The average of the 6 hybrids (not including the FVT) was 61.26MPGe (Please note, these are all parallel hybrids?)
The average of the 5 internal combustion drive cars was 82.92MPGe
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The internal combustion cars included a diesel, E10, and E85, so MPGe is required to compare them. Here's the spreadsheet used in the X-Prize:
http://www.progressiveautoxprize.org...Calculator.xls
A parallel hybrid has to be switched between electric and ICE power - how and when is this done? If you use up the charge in the battery at the beginning of a long trip (or during during the slower portions), then how do you recharge the battery to drive slowly again at the end of the trip? If you cannot charge the battery (given it is a PARALLEL hybrid!) how do you drive the car slowly, or up hills or into a headwind - or any other time that conditions are less than ideal?
Would you be forced to have a multigear transmission and a larger more powerful engine? If so, then what does that do to the efficiency?