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NASA-led study finds 50 vol% biofuel blend reduces soot particle emissions during aircraft cruising; reduced climatic impact of contrails

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Contrail cirrus clouds have a similar impact on the climate than all aviation carbon dioxide emissions that have accumulated over more than 100 years in the atmosphere. The possibility of reducing the engine exhaust soot emissions by more than half using biofuels paves the way for reducing the climatic impact of contrails.

Climate 210
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NASA and DLR to conduct joint flight tests on alternative fuel emissions with focus on ice crystals

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The first joint DLR/NASA flights, which were conducted from Palmdale, California in 2014, showed that adding 50% alternative fuel for cruising flight reduces the soot particle emissions of an aircraft engine by 50 to 70%, compared to the combustion of pure kerosene. Earlier post.). The research flights will start from Ramstein Air Base.repv.

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DLR wrapping up ECLIF in-flight study of emissions from alternative aviation fuels; potential for improved fuel design

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In a three-week series of flight tests lasting until 9 October 2015, the German Aerospace Center (Deutsches Zentrum für Luft- und Raumfahrt; DLR) has been investigating how to reduce the impact of air transport on the climate by using alternative fuels. At present, global air traffic contributes towards almost 5% of global warming.

Fuel 150
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NASA begins ACCESS flight research to study effects of biojet fuels on engine performance, emissions and contrails

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NASA researchers have begun a series of flights using the agency’s DC-8 flying laboratory to study the effects of alternate biofuel on engine performance, emissions and aircraft-generated contrails at altitude. A second phase of ACCESS flights is planned for 2014. Earlier post.).

Emissions 225
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DNV GL paper suggests near-term success for LNG in shipping; alternative fuel mix to diversify over time

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LNG as fuel eliminates SO x emissions, significantly reduces NO x and particulate matter, and also reduces GHG emissions—although not to the levels that would be required for addressing climate change. For example, shifting from AC to on board DC grids would allow engines to operate at variable speeds, helping to reduce energy losses.

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New Mercedes C-Class Estate offers new 1.6L diesel, diesel hybrid options; gasoline plug-in hybrid model coming

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Mercedes-Benz is adding a new Estate (wagon) model to its C-Class family starting in September 2014. Mercedes-Benz C-Class Estate (S 205) 2014: C 300 BlueTEC HYBRID & C 250 BlueTEC. An overhead camshaft actuates two intake and two exhaust valves per cylinder. liter 4-cylinder diesel (OM 626) produced by Renault. l/100 km (54.7

Diesel 304
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More details on the Mercedes-Benz S500 PLUG-IN HYBRID; new warranty for battery and PEEM

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The high-voltage battery feeds the electric motor through a water-cooled DC/AC converter, the power electronics. To optimise the effort for wiring, packaging and cooling, the DC/AC converter has been integrated into the engine space. Extended pre-entry climate control. 2014: C 300 BlueTEC Hybrid. 2012: E 400 HYBRID.

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