Fuel efficiency
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Everyone knows that walking on soft sand is more difficult than walking on a hard sidewalk. By the same token, MIT scientists are now suggesting that if road surfaces were to be made stiffer, large trucks would use less fuel.
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Airbus' new fello-fly demonstrator project will test the idea that two commercial aircraft flying in tandem can boost flight efficiency while reducing emissions, based on the technique used by flocks of birds.
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Aptera says it plans to have a car on the road by 2022 that can squeeze 1,000 miles (1,600 km) out of a 100-kWh battery.
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The gasoline age is giving way to electric, but there's still plenty of room for last-gasp improvements to the combustion engine.
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Once a year, the Delsbo Electric contest in Sweden challenges students to create and improve on the world's most energy-efficient vehicles. This year's champ, the Eximus IV, smashed the competition and all previous records with an electric equivalent of 687 MPGe (0.34 l/100km).
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When Gibson introduced the Flying V electric guitar in 1958, it divided opinion. A bold new aviation concept out of TU Delft is sure to do the same. Wearing the same moniker as Gibson's iconic instrument, the design is aimed at improving aircraft efficiency and sustainability.
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British company Camcon Automotive has built a fully digital engine valve system, uncoupled from the crank, that offers unprecedented control over the combustion cycle. It enables some weird and wonderful ideas we've never seen before, such as giving 4-stroke engines brief 2-stroke power boosts.
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Shell Lubricants has teamed up with Connecticut-based AirFlow Truck Company on "the Starship," a concept big rig fitted with various fuel-saving technologies that is being sent from sea to shining sea on a road trip to test its performance.
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With fuel accounting for a significant proportion of truck running costs these days, the quest for fuel efficiency has been attracting increasing attention. XStream Trucking's approach is to literally close the gap between the cab and the trailer at highway speeds.
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Researchers in Sweden are developing a device that increases the fuel efficiency of trucks by cloaking them in electric wind. Using plasma actuators to charge the air, the new technology controls the flow of wind around the truck to reduce drag and could improve fuel consumption by five percent.
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Volvo's SuperTruck concept has been designed to address fuel economy and emissions issues, which has been fitted with a prototype hybrid powertrain. Fuel consumption is reduced by 5 to 10 percent by allowing the diesel engine to shut off up to 30 percent of the time.
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Taking inspiration from nature, engineers at the UC Riverside have found a way to cut the fuel consumption of many PHEVs by over 30 percent, just by changing the way the split between combustion engine and battery power is handled.
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