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Mayor of London expanding Ultra Low Emission Zone London-wide; new £110M scrappage scheme

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The Mayor of London, Sadiq Khan, will expand the Ultra Low Emission Zone (ULEZ) ( earlier post ) London-wide. The expansion will come into effect on 29 August 2023 and will operate across all London boroughs up to the existing Low Emission Zone boundary for large and heavy vehicles. Source: Transport for London. daily charge.

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EPA says methane emissions from natural gas production have dropped 36% from 2007-2011

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In its recently released Inventory of US Greenhouse Gas Emissions and Sinks: 1990 – 2011 ( earlier post ), the US Environmental Protection Agency (EPA) reported that methane (CH 4 ) emissions from the field production of natural gas have declined by 36% from 2007 to 2011 (from 83.1 CH 4 emissions represented 8.8%

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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. The study, the Phase 2 Report of the comprehensive Advanced Collaborative Emissions Study (ACES). The study, the Phase 2 Report of the comprehensive Advanced Collaborative Emissions Study (ACES). Source: CRC. Click to enlarge.

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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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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. —Ezra Finkin.

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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. Current 2010 USEPA emissions standards for NO x and PM are set at 0.20 The team used a MY 2007 Volvo MD11 engine compliant with USEPA 2007 emissions standards. Click to enlarge.

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US charges Audi manager with conspiracy to cheat US emissions tests; sacrificing NOx control for a sound system

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The US has charged a former Audi manager via criminal complaint for his role in a conspiracy to defraud US regulators and customers by implementing defeat device software in thousands of Audi diesel vehicles to cheat US emissions tests. liter diesel engine employed Selective Catalytic Reduction (“SCR”) technology to reduce NO x emissions.

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