NREL study finds 2nd-generation diesel hybrid delivery vans show significant gains in fuel economy over conventional vans
Green Car Congress
SEPTEMBER 29, 2012
The two study groups were on different duty cycles and required a route switch to provide a valid comparison, which UPS accommodated. The team also performed dynamometer testing at the Renewable Fuels and Lubricants (ReFUEL) Research Laboratory in Denver. mpg, 13% greater than the 9.2 mpg, 20% greater than the 7.9
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