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Study finds high exhaust temperatures within NTE operation for heavy-duty diesels with aftertreatment systems contribute to high nanoparticle concentrations

Green Car Congress

The transient results illustrate the gradual formation of the nucleation mode particles with continuous increase in exhaust temperatures. Diesel particulate filters (DPF) and urea-based selective catalytic reduction (SCR) exhaust after-treatment systems thus have emerged as feasible strategies to meet the 2010 USEPA regulations.

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Audi banking on Gen 2 3.0L TDI diesel for US sales; calls for a “fair shot” for diesel

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Do they receive HOV access for their improved fuel economy and ultra low emissions? In fact in 6 of the states, diesel fuel is penalized with additional state taxes. So diesel fuel gets taxed twice or penalized twice at the federal and state level. Changes in the exhaust manifolds and turbo from Gen 1 to Gen 2.

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ICCT study finds real-world NOx emissions from Euro 6 diesels ~7x higher than Euro 6 regulatory levels

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The study follows another recent ICCT report showing that the gap between official and real-world fuel-economy figures in Europe has risen to about 38%. The testing of the US-spec vehicles certified to the US Tier 2 Bin 5/California LEV II standard was commissioned to West Virginia University (WVU) by the ICCT.). Earlier post.).

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ICCT-sponsored study of in-use testing of 3 Tier2-Bin5, CA LEV-II light-duty diesels finds wide variation of emissions against the limits

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The International Council on Clean Transportation (ICCT) contracted with the Center for Alternative Fuels, Engines and Emissions at West Virginia University to conduct in-use testing of three light-duty diesel vehicles (two 2.0L Overall, urban/suburban driving leads to a 32-39% reduction in fuel economy over highway driving.

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DOE to award up to $137M for SuperTruck II, Vehicle Technology Office programs

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West Virginia University Research Corporation. Develop and demonstrate technologies to enable a downsized, boosted, lean, low temperature gasoline combustion engine system that improves fuel economy while meeting emissions requirements. valve faces, piston crowns, and exhaust ports) to improve fuel economy.

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