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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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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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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.

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

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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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Report: Mazda seeking 30% boost in fuel economy with HCCI SkyActiv 2 engines around 2020

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Automotive News reports that Mazda plans a second generation of SkyActiv engines around 2020 that would achieve 30% better fuel economy than the current line of Skyactiv engines. The focus will be on lean burning, and increased compression ratios for the gasoline engines. Earlier post.).

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Oak Ridge-GM prototype low-viscosity ionic liquid-additized engine oil delivers 2% fuel economy improvement over 5W-30

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Prototype low-viscosity ionic liquid-additized engine oil demonstrated a 2% improved fuel economy compared to Mobil 1 5W-30 engine oil (3.93% over the 20W-30 baseline oil) in standard fuel efficiency engine dynamometer tests. Fuel Efficiency Lubricating Oils' Blau, Sheng Dai, Michael B. 2013.11.010.