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Downspeeding and supercharging with transmission optimization can deliver fuel economy improvement over downspeeding and turbocharging

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Researchers from Southwest Research Institute (SwRI) and Eaton have demonstrated the application of downspeeding and supercharging a diesel vehicle, in conjunction with optimizing transmission gear ratios and the shift schedule, to deliver a greater improvement in fuel economy than a downsped and turbocharged configuration.

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Pinnacle Engine pre-production prototype opposed piston engine shows about 27% fuel consumption improvement across different scooter cycles compared to conventional engine

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Fuel mass flow comparison shows Pinnacle engine ahead at just about all points in the map. FEV performed engine mappings in a dynamometer test cell to evaluate the fuel economy of Pinnacle’s TP90 scooter engine compared to a benchmark engine (N15) from Pinnacle’s Asian OEM partner. Test engine specs.

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Co-Optima releases capstone report on first 4 years of work

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For the past four years, the Co-Optimization of Fuels & Engines (Co-Optima) National Laboratory consortium has focused research efforts primarily on turbocharged (boosted) spark-ignition (SI) engines for light-duty vehicles. The report highlights researchers’ answers to three vital questions: What fuels do engines want?

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Update on Nissan’s new front-engine, front-wheel drive hybrid system

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At the SAE 2013 Hybrid and Electric Vehicle Technology Symposium in Anaheim this week, Owen Thunes, Senior Project Engineer, Zero Emissions Research Group at Nissan, provided an updated overview of the company’s development efforts on the upcoming FF (Front-engine, Front-wheel drive) hybrid system. Earlier post.) —Owen Thunes.

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SAE High Efficiency IC Engine Symposium opens with consideration of alternative engine designs

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SAE’s 2012 High Efficiency IC Engine Symposium in Detroit—the second as an immediate precursor to the SAE World Congress—opened on Sunday with a consideration of several alternative engine designs: opposed piston 2-stroke (Achates Power); variable compression ratio (MCE-5); split cycle (Scuderi); and advanced rotary (Liquid Piston).

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Lotus Omnivore Engine Shows Up To 10% Better Fuel Economy Than Spray-Guided GDI Engines; Achieves HCCI At Extremely Light Loads

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Comparison of fuel consumption of Omnivore, homogeneous Gasoline Direct Injection (GDI) and Spray-Guided GDI engines. The first testing phase of Lotus Engineering’s Omnivore variable compression ratio, flex-fuel direct injection two-stroke engine ( earlier post ) has been successfully completed on gasoline.

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Ricardo working to reduce development time for 48V-based powertrains; THOMSON project

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million) aims to develop cost-effective solution based on 48V architectures as a key element to increase fuel economy and reduce environmental impact. liter diesel and a small downsized Spark Ignited CNG engine equipped with a direct injection system. million THOMSON project (with an EU contribution of €9.1