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Study finds engines emit exhaust nanoparticles even when not fueled during engine braking

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Exhaust particle size distributions measured by ELPI (color map) and particle concentration measured by CPC (white line) during individual engine braking conditions (speed change from 32 km/h to 0 km/h). The exhaust sample was taken from the exhaust manifold. The exhaust sample was taken from the exhaust manifold.

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SwRI D-EGR gasoline demo vehicle delivers diesel efficiency at lower cost; potential for LEV III/Tier 3 emissions

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2014-01-1190. Southwest Research Institute (SwRI) announced preliminary test results of its Dedicated-Exhaust Gas Recirculation (D-EGR) demonstration vehicle ( earlier post ) at the SAE 2014 World Congress in Detroit. liter gasoline direct injection engine. Hydrogen-enriched exhaust is routed to the intake.

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2014 Mercedes-Benz E-Class in the US will offer new 4-cylinder diesel; new 4-cylinder gasoline direct injection engine in other markets

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Mercedes-Benz has introduced the updated 2014 E-Class Sedan and Wagon, featuring an array of new driver assistance systems in addition to new fuel efficient engines. Both the E-Class sedan and wagon offer a range of gasoline and diesel engines, all coming with the ECO start/stop system as standard equipment. Earlier post.).

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Neste files patent on gasoline fuels with high bioenergy content

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Neste, currently largest producer of renewable drop-in fuels (primarily diesel) with its NEXBTL platform ( earlier post ), has filed a patent ( US20150144087 ) on a gasoline composition (and the method for making it) comprising up to 20 vol% (preferably from about 10-15 vol.%), of paraffinic bio-hydrocarbons originating from the NEXBTL process.

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2014 Sprinter van for US standard with new 2.1L diesel; new driver assistance features

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2014 Sprinter. Since 2010, all Sprinters in the US have been powered by BlueTEC diesel engines, marking the first use of BlueTEC technology, with its selective catalytic reduction (SCR) exhaust aftertreatment system, in the commercial van market here. The two overhead camshafts actuate 16 intake and exhaust valves.

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

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Pressure on the RFS2 has increased as statutory mandated volumes of biofuel exceed the “blendwall” of 10% ethanol in gasoline. Ethanol has about one-third lower energy density than gasoline; accordingly, cars drive fewer miles per gallon when operating on ethanol blends compared with unblended gasoline. The ICCT ethanol paper.

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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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Volkswagen is presenting the world premiere of the redesigned 2015 Jetta sedan at the 2014 New York International Auto Show. In addition to its three four-cylinder gasoline engines (2.0-liter A complex exhaust gas recirculation system is also used. The system has low exhaust back pressure and high filtration efficiency.

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