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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. —Han et al.

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

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In a second paper, also published in Fuel , they systematically compared the stoichiometric alcohol–gasoline and gasoline–alcohol DFSI combustion for engine particle number (PN) reduction (and fuel economy improvement), also using a high compression ratio gasoline engine. They flexibly controlled the PFI to DI fuel ratios.

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Toyota details design of fuel cell system in Mirai; work on electrode catalysts

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In PEM fuel cells, the humidity of the electrolyte membrane must be controlled to ensure sufficient proton conductivity; this function is usually performed by an external humidifier. For the stack, Toyota: Reduced the thickness of the electrolyte membrane, promoting the diffusion of the water in the air system. Fuel economy.

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ICCT study concludes no technical barriers to use of higher blends of ethanol

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With stagnating demand for gasoline due to rising fuel economy in the nation’s fleet and other factors, further increases to US ethanol consumption would require the use of higher blends of ethanol, either in conventional vehicles or in flex-fuel vehicles (FFVs) designed to tolerate blends of up to 85% ethanol (E85).

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Perspective: US Needs to Transition to Hydrous Ethanol as the Primary Renewable Transportation Fuel

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The oil price shocks of the 1970s led the Brazilian government to address the strain high prices were placing on its fragile economy. Under the Proalcool Program, sugar companies were ordered to increase production and the state-run oil company, Petrobras, was required to make álcool (ethanol) available at its fuel stations.

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Elio Motors unveils engine prototype for 84 mpg highway 3-wheeler

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As the team began to dive into some of the details and changes to meet the desired Elio targets, it found that the Geo Metro engine would not meet the fuel efficiency targets to enable the vehicle fuel economy goal of 84 mpg highway. This model is referred to as the Full Vehicle Model with Restraints and Crash Dummy.

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2015 VW Jetta to debut at New York Show; new EA288 diesel version already LEV3/Tier 3 compliant

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l/100 km); its combined fuel economy is projected to be around 37 mpg (6.36 An innovative thermal management system makes use of separate coolant loops for the cylinder head and the crankcase during the warm-up phase and has a water pump that can be deactivated. A complex exhaust gas recirculation system is also used.

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