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New lightweight aluminum piston from Federal-Mogul enables further downsizing of gasoline engines

Green Car Congress

Federal-Mogul Corporation has developed a lightweight, high-strength aluminium piston that enables engine manufacturers to increase the power density and efficiency of boosted, direct injected gasoline engines. Cutaway of the Advanced Elastoval II piston. Click to enlarge.

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Navigant: gasoline and diesel stop-start vehicles to represent 58% of all new vehicles sold in 2025

Green Car Congress

In a new report analyzing the emerging global market for technologies that improve fuel economy, Navigant Research forecasts that sales of gasoline and diesel stop-start vehicles (SSVs) will reach 63 million annually by 2025, representing 58% of all vehicles sold in that year.

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Consumer Reports survey shows high fuel costs cause downsizing, less driving; 73% would consider alt fuel vehicle

Green Car Congress

Two-thirds of owners surveyed said they expect their next vehicle to get better fuel mileage than the one they’re driving now, and fuel economy topped the list as the most important consideration when shopping for their next car, followed by quality and safety.

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Split injection Miller cycle with boost decreases knock tendency and increases torque in downsized engine

Green Car Congress

Researchers at Tianjin University in China report that combing split injection to the Miller cycle with boost pressure can effectively decrease the knock tendency and increase the engine torque in a downsized spark-ignition engine. Their paper is published in the journal Fuel. 2017.11.006.

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Navigant forecasts global road transportation energy consumption to increase 25% by 2035; 84% from conventional fuels

Green Car Congress

Navigant also projects that investments in alternative fuel and fuel efficiency improvements will reduce annual energy consumption in the United States year-over-year. Conventional fuels (e.g., gasoline and diesel) represent the bulk of energy consumption throughout the forecast period. Click to enlarge.

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Tsinghua studies on alcohol-gasoline dual fuel engines show fuel efficiency and particle number benefits

Green Car Congress

Researchers at Tsinghua University in China are studying the effects of Dual-Fuel Spark Ignition (DFSI) combustion fueled with different alcohols and gasoline. Alternatively, in the second study, gasoline–alcohol DFSI is based on PFI of gasoline and DI of alcohols.). —Liu et al. —Liu et al.

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FEV’s two-stage VCR system; 5-7% increase in fuel economy using variable length conrods

Green Car Congress

Use of a variable compression ratio (VCR) could be one technology approach to reducing fuel consumption in highly boosted (e.g., downsized, turbocharged) gasoline engine, as operating an engine with higher compression ratios at low load can increase fuel economy compared to operating an engine with fixed compression ratio.