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ORNL researchers quantify the effect of increasing highway speed on fuel economy

Green Car Congress

Vehicle installed on the chassis dynamometer in the ORNL vehicle research laboratory. This website, jointly maintained by the US Department of Energy and the US Environmental Protection Agency (EPA), provides information such as official EPA “window label” fuel economy estimates for city, highway, and combined driving for all U.S.

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EPA trends report sees record levels of average new vehicle fuel economy and CO2 emissions for MY 2012; role of new gasoline vehicle technologies

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EPA projects advanced transmissions (6+ speeds and CVTs), gasoline direct injection (GDI) systems, and turbocharged engines will be installed on at least 15% of all MY 2013 vehicles. The majority of the emissions and fuel savings from current vehicles, EPA noted, is due to new gasoline vehicle technologies. mpg, or 22%.

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Non-hybrid stop/start systems installed on 35.7% of US light-duty trucks produced in MY2018

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Through 2015, cars had the greatest share of stop/start systems installed. After 2015, the greatest share of start/stop systems was installed on light-duty trucks, rising to 35.7% Stop/start systems are designed to conserve fuel by reducing idle time when a vehicle is stopped. Source: U.S.

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In-use emissions report for Achates heavy-duty OP diesel shows substantial margin to most stringent EPA NOx proposed regulation

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In addition, the Environmental Protection Agency (EPA) recently released its proposed rule to lower NO x emissions levels for commercial vehicles across the entire United States. Option 1 from EPA is similar in many respects to the CARB regulation. —Kent Johnson, Principal Investigator, Emissions and Fuels Research, UCR.

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Obama Administration announces first fuel economy and GHG standards for medium- and heavy-duty vehicles

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US President Barack Obama announced fuel efficiency and greenhouse gas emission standards for medium- and heavy-duty vehicles. Heavy-duty engines affected by the final standards are generally those that are installed in commercial medium- and heavy-duty trucks and buses. vocational vehicles such as transit buses and refuse trucks.

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Toyota launches battery-electric bZ4X SUV

Green Car Congress

Coming to dealerships this spring with an EPA-estimated range rating of up to 252 miles (for XLE front-wheel drive models, based on EPA’s testing procedure standards), the 2023 Toyota bZ4X will have a starting MSRP of $42,000. The XLE FWD model has an EPA-estimated range rating of up to 252 miles. seconds for FWD and 6.5

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Gasoline direct injection was the most widely adopted emerging fuel saving technology in 2018: 51%

Green Car Congress

Manufacturers have been adopting technologies that improve the efficiency of light-duty vehicles and allow them to achieve greater fuel economy. Eight of the largest manufacturers installed GDI in more than 75% of the vehicles they produced, with several near or at 100%. Source: DOE, US EPA.

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