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NHTSA to propose new fuel economy standards soon; 8% increase per year for MY 2024-2026

Green Car Congress

The US Department of Transportation’s National Highway Traffic Safety Administration (NHTSA) announced that it will soon propose robust new fuel economy standards. NHTSA will also begin work, under a new Presidential Executive Order, to develop fuel economy standards for passenger cars and light duty trucks for model years 2027-2030.

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Studies highlight effects of different gasoline components on fuel economy, combustion and emissions

Green Car Congress

Researchers at Jilin University (China) have investigated the effect of gasoline components on fuel economy, combustion and emissions in a GDI (gasoline-direct-injection) engine. The team subsequently followed up this first study with a second, exploring the effects in a PFI (port-fuel-injection) engine.

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Hyundai Motor Group unveils CVVD engine technology; +4% performance, +5% fuel economy, -12% emissions

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T-GDi—the first engine to feature the technology. CVVD optimizes both engine performance and fuel efficiency while reducing emissions. When the vehicle is maintaining a constant speed and requires low engine output, CVVD opens the intake valve from the middle to end of the compression stroke. T-GDi engine.

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NASA Glenn develops automated flywheel pulse-and-glide system; improving fuel economy up to 40-100%

Green Car Congress

Innovators at NASA’s Glenn Research Center have developed an automated pulse-and-glide technique using a flywheel energy storage system for on-road vehicles; the technology, which NASA Glenn says can improve fuel economy over existing internal combustion or battery hybrid systems by 40-100%, is available for licensing.

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Tesla had lowest tailpipe CO2 emissions & highest fuel economy in 2021 EPA Auto Trends report finds

Teslarati

The EPA released its annual Automotive Trends report, and findings reveal that Tesla is leading the way with the lowest tailpipe CO2 emissions and the highest fuel economy of all large manufacturers. Stellantis had the highest new vehicle average CO2 emissions and lowest fuel economy of the large manufacturers, the report noted.

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New Navistar International Prostar models offers up to 5% fuel economy improvement

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announced that its International ProStar linehaul and regional haul tractors are now available with the company’s 13-liter engine and Eaton Fuller Advantage Series Automated 10-speed transmission. The new ProStar offering delivers up to 5% in fuel economy improvement. Navistar, Inc.

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Navistar ships first vocational vehicles with 9- and 10-liter SCR engines; up to 8% fuel economy improvement

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has started customer shipments of its first International DuraStar and International WorkStar vehicles with the company’s 9- and 10-liter engines with Selective Catalytic Reduction (SCR) emissions technology. Built on Navistar’s proven I-6 platform, the company’s 9- and 10-liter engines bring 9.3-liter Navistar, Inc.