Heavy hybrids drag down savings, study finds
#1
08-10-2007, 01:20 AM
Join Date: Oct 2005
Location: Huntsville, AL
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Heavy hybrids drag down savings, study finds
http://www.msnbc.msn.com/id/20200574/
Although the physics is right, the solution proposed would be disastrous because it ignores payload, the real goal. I have no problem with superior materials, carbon fiber frames and suspension parts. But going just on weight is counter productive to the technology. Sure, I'd have preferred seeing GM's first full hybrid in something smaller but they are going after an existing market. This proposed policy change would be so anti-GM as to not be funny.
Bob Wilson
. . .
"The average hybrid is growing rapidly heavier, more powerful, and as a result the fuel consumption benefits are reduced," said Conor Reynolds of University of British Columbia.
. . .
Although a heavy hybrid consumes more fuel than a light one, Reynolds and Kandlikar were surprised to find that hybrids carry additional weight more efficiently than internal combustion engine vehicles (ICEV).
Specifically, when normal ICEVs scale up 1,000 pounds in size, they require on average an extra 1.3 gallons of gas to go 100 miles. For HEVs, the same weight gain would correspond to an extra 0.7 gallons per 100 miles.
. . .
Reynolds thinks the new weight scaling results could help determine the best way to encourage more fuel efficient vehicle sales.
"It might be decided that tax breaks should be given to any vehicle that has demonstrated environmental benefits, and not only to hybrid SUVs or hybrid luxury cars," Reynolds said.
. . .
"The average hybrid is growing rapidly heavier, more powerful, and as a result the fuel consumption benefits are reduced," said Conor Reynolds of University of British Columbia.
. . .
Although a heavy hybrid consumes more fuel than a light one, Reynolds and Kandlikar were surprised to find that hybrids carry additional weight more efficiently than internal combustion engine vehicles (ICEV).
Specifically, when normal ICEVs scale up 1,000 pounds in size, they require on average an extra 1.3 gallons of gas to go 100 miles. For HEVs, the same weight gain would correspond to an extra 0.7 gallons per 100 miles.
. . .
Reynolds thinks the new weight scaling results could help determine the best way to encourage more fuel efficient vehicle sales.
"It might be decided that tax breaks should be given to any vehicle that has demonstrated environmental benefits, and not only to hybrid SUVs or hybrid luxury cars," Reynolds said.
. . .
Bob Wilson
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