U.S. Department of Energy - Energy Efficiency and Renewable Energy
FreedomCAR and Vehicle Technologies Program
Just the Basics
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Technology Overviews
Biodiesel (
PDF 284 KB
)
Combustion (
PDF 240 KB
)
Diesel Engine (
PDF 267 KB
)
Electric Vehicles (
PDF 285 KB
)
Ethanol (
PDF 299 KB
)
Fuel Cells (
PDF 316 KB
)
Hybrid Electric Vehicles
Hydrogen (
PDF 264 KB
)
Liquefied Petroleum Gas (
PDF 274 KB
)
Natural Gas (
PDF 300 KB
)
Particulate Matter (
PDF 268 KB
)
Vehicle Emissions (
PDF 273 KB
)