The case for Class 8 hybrids    • Image: Merits of Hybridizing
table.jpg   • Image: Payback Analysis from Fleet Viewpoint.jpg
• Image: BAE transmission-centric hybrid.jpg   • Image: Mild vs.
Heavy Hybrids table.jpg   • Image: Traction Motor overlay on
ICE.jpg   • Image: Kinetic energy vs. speed and mass.jpg   •
Image: WalMart dual-mode hybrid.jpg   • Image: Rotor and stator
for SR machine.jpg   • Image: SR traction motor torque vs. IPM
machine.jpg Image: Coca-Cola class 8 hybrid electric.jpg  During
a 13-month study conducted by NREL with Coca-Cola, the Class 8
hybrid-electric tractors—equipped with a parallel hybrid system
from Eaton—demonstrated 13.7% higher fuel economy than the
conventional tractors, resulting in a 12% reduction in fuel
costs for the hybrids.  The conventional wisdom is that Class 8
vehicles have been so well optimized for their vocation that
there is little opportunity for generating significant benefits
with hybrid technology. The high power levels and long ranges
required of these ve