The National Academies: What You Need To Know About Energy

The National Academies

What You Need To Know About Energy

Review of the 21st Century Truck Partnership (2008)

Heavy-duty trucks and buses now consume about 21 percent of the fuel used for surface transportation in the United States. As gasoline and diesel fuel prices have risen in the past few years, the pressure to find ways to increase fuel use efficiency by these vehicles has grown significantly. In 2000, four federal agencies and 15 industrial partners formed the 21st Century Truck Partnership (21CTP) to manage a cooperative R&D effort toward a safer and more efficient fleet of vehicles. In 2007, DOE-which now leads the partnership-asked the NRC to conduct an independent assessment of the 21CTP. This report provides a discussion of the organization and background of the Partnership; an analysis of its management strategy and priority setting; and an assessment of the Partnership’s technical goals for engine systems and fuels, heavy-duty hybrid vehicles; reduction of parasitic energy losses, engine idle reduction, and safety.

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Energy Hands-on

What do you know about energy?

Which of the following is frequently used as a unit of measurement for the energy content of fuels?

  • Sorry, that’s incorrect.

    The British Thermal Unit, or Btu, is frequently used as a measure for energy content of fuels. One gallon of gasoline contains about 124,000 Btu.

  • Correct!

    The British Thermal Unit, or Btu, is frequently used as a measure for energy content of fuels. One gallon of gasoline contains about 124,000 Btu.

  • Sorry, that’s incorrect.

    The British Thermal Unit, or Btu, is frequently used as a measure for energy content of fuels. One gallon of gasoline contains about 124,000 Btu.

  • Sorry, that’s incorrect.

    The British Thermal Unit, or Btu, is frequently used as a measure for energy content of fuels. One gallon of gasoline contains about 124,000 Btu.