Frank Markus of Motor Trend magazine explains why every carbon molecule in a liquid biofuel, such as ethanol or biodiesel, can't be counted "as an ecological freebie." He reports on the debate about the Renewable Fuel Standard that took place during a panel discussion at this year's Society of Automotive Engineers (SAE) Government-Industry Meeting in Washington, DC.
At the close of this week's Asia Pacific Economic Cooperation (APEC) trade summit in Beijing, President Barack Obama and Chinese President Xi Jinping pledged to cut greenhouse gas emissions and detailed an agreement that includes a renewed five-year commitment to supporting clean vehicle research efforts via the U.S.-China Clean Energy Research Center.
The motor vehicle is at the cusp of being transformed by two threads of technology advancement. One is electrification, replacing gasoline and other liquid fuels with the direct use of electrons, enabling cars to plug in for some or all of their power. The other is intelligence, relieving humans of the error-prone task of driving through the connectivity, sensing and increasing automation, leading to vehicles that will one day drive themselves.
Officials from the U.S. Department of Energy, China’s Ministry of Science and Technology, faculty and students from the University of Michigan- led Clean Energy Research Center- Clean Vehicle Consortium (CERC-CVC) and industry partners met in Ann Arbor on August 11th and 12th to review progress on the initiative's joint clean vehicle energy research projects.
This National Research Council (NRC) report assesses the potential to achieve twin goals of reducing petroleum use and cutting greenhouse gas (GHG) emissions from U.S. cars and light trucks to 80 percent below the 2005 level by 2050.
ABSTRACT. Improving the fuel efficiency of automobiles (cars and light trucks) is an important means of addressing transportation oil demand and greenhouse gas (GHG) emissions. This report examines the efficiency attainable through evolutionary changes in U.S. automobiles that have fueling characteristics as well as performance, size and other attributes similar to those of today. The analysis combines results from previous engineering studies of powertrain efficiency and load reduction with new examinations of rates of technology change and cost reduction.
With the backing of 13 car companies, the United Auto Workers and other parties, the Obama Administration announced the biggest step forward on auto efficiency in over a generation. The new Corporate Average Fuel Economy (CAFE) regulations just finalized target the greenhouse gas emissions equivalent of 54.5 mpg by model year 2025, double the efficiency of this year's vehicle fleet.
Building on the Bush Administration's 2007 proposal to raise automotive fuel economy by up to four percent per year, the Obama Administration is now considering regulations that might target a doubling of Corporate Average Fuel Economy (CAFE) standards by 2025. But just how much can the efficiency of cars and light trucks be improved, and at what cost?