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English: Department of Energy's Energy Efficiency and Renewable Energy Fuel Cell Technologies Program Fuel cell comparison chart. This shows a summary of the different types of fuel cells. Materials on the EERE Web site are in the public domain.
vehicles 1976 and newer model-year gas-powered, hybrid, and flex-fuel vehicles; exemptions: new car = ≤6 model-years old are exempt; change of ownership = ≤4 model-years old are exempt required biennially for registration renewal; 2000 model-year and newer receive only visual and OBDII inspections
Super ultra-low emissions vehicle (SULEV) is a U.S. classification for passenger vehicle emissions. The classification is based on producing 90% fewer emissions than the average gasoline-powered vehicle. [ 1 ]
2024 Toyota RAV4 Hybrid. Price: Starting at $32,825 Fuel economy: up to 40 mpg combined. The 302-hp Toyota RAV4 Prime might sound the most appealing to enthusiasts like us, but the mid-range, non ...
Though vehicle fuel efficiency has increased within each category, the overall trend toward less efficient types of vehicles has offset some of the benefits of greater fuel economy and reduction in carbon dioxide emissions. [5] Without the shift towards SUVs, energy use per unit distance could have fallen 30% more than it did from 2010 to 2022. [6]
Cycling has a low carbon-emission and low environmental footprint. A European study of thousands of urban dwellers found that daily mobility-related CO 2 emissions were 3.2 kg (7.1 lb) of CO 2 per person, with car travel contributing 70% and cycling 1% (including the entire lifecycle of vehicles and fuels).
[20] [21] The number of flex-fuel vehicles on U.S roads increased from 1.4 million in 2001, to 4.1 million in 2005, and rose to 7.3 million in 2008. [3] [19] E85 flex-fuel vehicles are becoming increasingly common in the Midwest, where corn is a major crop and is the primary feedstock for ethanol fuel production.
Comparison of Wien’s curve and the Planck curve. Wien's approximation (also sometimes called Wien's law or the Wien distribution law) is a law of physics used to describe the spectrum of thermal radiation (frequently called the blackbody function). This law was first derived by Wilhelm Wien in 1896.