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New Emissions Analytics study suggests pollution from tire wear now 1,850 times worse than exhaust emissions

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In early 2020, UK-based independent testing firm Emissions Analytics published a study claiming that tire particulate wear emissions were 1,000 times worse than exhaust emissions ( earlier post ). As testament to the filtration efficiency of the latest gasoline particulate filters (GPFs), tailpipe mass emissions are now as low as 0.02

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Study finds catalyzed gasoline particulate filters effective at reducing particulate and PAH emissions from GDI engines

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The researchers assessed the gaseous, particulate, and genotoxic pollutants from two current technology gasoline direct injection vehicles when tested in their original configuration and with a catalyzed gasoline particulate filter (GPF). LEVIII will begin a four year phase-in of a tighter 1 mg/mile starting in 2025. Yang et al.

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New VW Golf now available to order with natural gas drive

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The engine of the quasi-monovalent drive system is powered primarily with CNG (Compressed Natural Gas), but can also run on gasoline. kg and permits a driving radius of a good 400 kilometers (249 miles) in the WLTP cycle. The Golf TGI is also equipped with a gasoline tank with a useful capacity of 9 liters (2.4

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UC Riverside study finds emissions benefits for E15 blend in California

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A study by a team from UC Riverside has assessed the potential of increasing ethanol content in California reformulated gasoline (CaRFG) by investigating the exhaust emissions from a fleet of 20 Tier 3 light-duty vehicles. A baseline CaRFG E10 (10% ethanol by volume) fuel was splash-blended with denatured ethanol to create an E15 fuel.

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NREL study probes emissions impact of butanol-gasoline blends in light-duty vehicles

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Results of a study led by a team from the National Renewable Energy Laboratory on the impact of butanol-gasoline blends on light-duty vehicle emissions suggest that widespread deployment of n-butanol or i-butanol in the gasoline pool could result in changes to the estimated emissions of alcohols and carbonyls in the emissions inventory.

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Recent on-road real-world emission testing in India highlights disparity between cycles, gasoline and diesel

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The results highlight the disparity between test-cycles and real-world emissions as well as the large disparity between gasoline and diesel vehicles. gNO x /km for gasoline; and 0.25 On-road tests were conducted 50 km (31 miles) south west of New Delhi. Source: The ICCT. Click to enlarge.

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Ford study suggests GDI engines can meet coming California and US PM emissions standards over 150k miles; more work to be done

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2021) over a 150,000-mile vehicle lifetime, but that further work must be done to address achieving the more stringent 1 mg/mi target (LEV III in 2025). The efficiency advantage is not as large as with diesel engines, making use of gasoline particulate filters (GPF) a less practical solution to PM emissions aftertreatment.

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