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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 ). —Emissions Analytics. Quoting such ratios, however, needs careful interpretation.

Exhaust 539
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Neste charters two new lower-emission tankers from Terntank; methanol and sails

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Neste has signed an agreement to charter two new lower-emission product tankers from Terntank. The tankers are designed with foldable suction sails and dual-fuel engine enabling the use of e-methanol as fuel, which is produced with Power-to-X technology using captured carbon and renewable energy.

Emissions 300
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Researchers use satellite data to show vehicles are an under-recognized source of urban ammonia pollution

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Researchers now report in ACS’ Environmental Science & Technology Letters that satellite data from before and during the spring 2020 lockdown in Los Angeles shows that vehicles, rather than agriculture, are the main source of urban airborne ammonia (NH 3 ), which forms small particles that contribute to air pollution and harm human health.

Pollution 321
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Ice core data show why air pollution is dropping more slowly in US and Western Europe despite lower sulfur emissions

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Despite these successes, sulfate levels in the atmosphere have declined more slowly than sulfur dioxide emissions, especially in wintertime. This unexpected phenomenon suggests sulfur dioxide emission reductions are less efficient than expected for cutting sulfate aerosols. These trends are expected to continue.

Pollution 221
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Argonne helps optimize piston bowl design for Caterpillar heavy-duty engines using high-performance computing

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Argonne National Laboratory is helping Caterpillar improve efficiency and reduce emissions in their heavy-duty diesel engines. Engineers are working to improve the fuel efficiency of these engines while minimizing pollution to reduce energy consumption and ensure the sustainability of these industries in the future.

Design 459
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CARB approves new requirements to further reduce air pollution from Transport Refrigeration Units

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The 2022 amendments will require a variety of actions designed to reduce the pollution these units produce, and accelerate their transition to zero-emission technologies. road particulate matter emission standard for 25?50 emission by 31 December 2029. road engines. Reductions of PM 2.5 50 horsepower engines.

Pollution 259
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Optimized heavy-duty CI engine fueled with DME delivers diesel performance, significantly reduces engine-out emissions

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A team from Empa - Swiss Federal Laboratories for Materials Science and Technology and FPT Motorenforschung reports in an open-access paper in the journal Fuel on the performance and emission characteristics of an 11-liter heavy-duty compression ignition engine which was optimized specifically for DME (dimethyl ether) combustion. from 16.5)

Engine 368