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HEI ACES study of lifetime animal exposure to New Technology Diesel Engine exhaust finds no lung cancer

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The first study to conduct a comprehensive evaluation of lifetime exposure to new technology diesel exhaust (NTDE)—i.e., exhaust from heavy-duty diesel engines meeting EPA 2007 and later emissions requirements—has found no evidence of carcinogenic lung tumors. Earlier post.) Earlier post.)

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

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The transient results illustrate the gradual formation of the nucleation mode particles with continuous increase in exhaust temperatures. Manufacturers have responded with different technologies and engine control strategies for compliance. Diesel engines for use in the US are certified on the Federal Test Procedure (FTP) cycle.

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DUH says testing indicates use of defeat device in BMW 320d diesel

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Results of testing on a Euro 6 BMW 320d diesel by the German environmental organization Deutsche Umwelthilfe (DUH), ZDF’s WISO and a software expert point to the use of inadmissible defeat devices, according to DUH. The vehicle must have fully functional exhaust gas cleaning in all normal operating situations.

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CRC ACES Phase 2 report finds emissions from modern heavy-duty diesels well below required levels

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2010 engines emissions reduction relative to 2010, 2007, and 2004 US emission standards. earlier post ), found that emissions of NO 2 and other nitrogen oxides—which can have direct health effects and contribute to the formation of smog—were approximately 61% below the 2010 EPA standard and 99% lower than in 2004 engines.

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Health Effects Institute to release Executive Summary of ACES new-technology diesel results this fall

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The Summary will be the synopsis and final publication from the program to characterize the emissions and assess the health effects of new-technology diesel exhaust (NTDE) from heavy-duty diesel engines that meet the 2007 and 2010 regulations enacted by the US Environmental Protection Agency (EPA). Earlier post.)

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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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Audi of America introduced four new TDI clean diesel models for the US market this year—the Audi A8, A7, A6, Q5—along with an updated Q7 TDI, all equipped with a second-generation 3.0L V6 TDI diesel engine. ” One of our primary goals and objectives is to level the playing field for clean diesel vehicles.

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US transit agencies adopting lower-emissions diesel at faster rate than HD truck fleet

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US transit agencies are adopting lower-emissions diesel technology at a faster percentage than the heavy-duty trucking fleet, said Ezra Finkin, the Director of Policy for the Diesel Technology Forum, at last week’s American Public Transportation Association (APTA) Expo Bus and Maintenance Technical Session in Houston. Click to enlarge.

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