Aug 5, 2024 ， EPA confirms approximately 15% of all test results, but it is the manufacturers that are responsible for providing the fuel economy data used ...
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How to calculate greenhouse gas emissions from vehicles?
To determine annual greenhouse gas emissions per mile, the following methodology was used: carbon dioxide emissions per gallon of gasoline were divided by the average fuel economy of vehicles to determine carbon dioxide emitted per mile traveled by a typical passenger vehicle.
How does EPA test cars?
Vehicles are tested on a dynamometer under standard test cycles designed to account for various driving conditions, including city, highway, and aggressive driving, as well as cold and hot weather conditions. More information on regulations covering vehicle testing procedures.
How much fuel consumption and greenhouse gas emissions?
A typical passenger vehicle emits about 4.6 metric tons of CO2 per year. This assumes the average gasoline vehicle on the road today has a fuel economy of about 22.2 miles per gallon and drives around 11,500 miles per year. Every gallon of gasoline burned creates about 8,887 grams of CO2.
How do you measure greenhouse gas emissions?
One of the best-established ways to measure greenhouse gas concentrations is called nondispersive infrared, or NDIR, spectroscopy. An NDIR spectroscopy measurement starts by sucking air into a tube. An infrared lamp shines light into the tube at one end, and the light is measured at the other.
Oct 25, 2016 ， The agencies issued a Notice of Proposed Rulemaking (NPRM) on July 13, 2015, that proposed Phase 2 GHG and fuel efficiency standards for heavy- ...
Jun 1, 2021 ， Currently, the federal standards that regulate fuel economy and GHG emissions from new passenger cars and light trucks include the Corporate ...
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The Program will further reduce greenhouse gas emissions (GHG) and increase fuel efficiency for on-road heavy-duty vehicles, responding to the President's ...
Apr 22, 2024 ， We refer to the EPA-specific GHG regulations found within the ＾Greenhouse Gas Emissions and Fuel Efficiency Standards for Medium- and Heavy-Duty ...
Car makers and suppliers have developed far more innovative technologies to improve fuel economy and reduce GHG emissions than anticipated just a few years ago.
Fuel economy and carbon-related emissions are tested over EPA's two test cycles (the Federal Test Procedure. (FTP-75), weighted at 55%; and the Highway Fuel ...
Jun 1, 2021 ， Currently, the federal standards that regulate fuel economy and GHG emissions from new passenger cars and light trucks include the Corporate ...
GHG emissions related to vehicle energy consumption occur not just on board the vehicle but also upstream in the fuel generation and transport to the vehicle.
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Jul 1, 2023 ， The SAFE regulation set 2021 targets for CO2 emissions and fuel economy for new vehicles in the US at 136.7 gCO2/km and 37.3 mpg, respectively.
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