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Study finds that replacing older, highly polluting school buses could lead to 1.3 million fewer daily absences annually

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Replacing all of the oldest, highly polluting school buses in the US could lead to 1.3 million fewer daily absences annually, according to a University of Michigan study. Even relatively short commutes on school buses can dominate students’ daily air pollution exposures. The program is ongoing.

Pollution 170
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NTSB Chair questions safety impact of heavy EVs

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Heavier vehicles also generate more particulate pollution from tyre wear. A focus on driving lighter, safer, cleaner and less can ensure a better future for everyone. —Jennifer Homendy. They require more materials and energy to build and propel them, adding to emissions and energy use. —Shaffer et al. Shaffer et al.

F-150 459
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Auburn University leads $2M DOE Co-Optima project to evaluate renewable butyl acetate as diesel fuel additive

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Auburn University researchers are leading a $2-million US Department of Energy Co-Optima project ( earlier post ) that will evaluate renewable butyl acetate (BA) as a bio-based fuel additive that can be blended with diesel fuel to reduce soot and greenhouse gas emissions and yield cleaner engine operation in cold-weather conditions.

Universal 247
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MIT team proposes flex-fuel gasoline-alcohol engine PHEV long-haul trucks

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We’ve been working for a number of years on ways to make engines for cars and trucks cleaner and more efficient, and we’ve been particularly interested in what you can do with spark ignition [as opposed to the compression ignition used in diesels], because it’s intrinsically much cleaner. —Daniel Cohn.

MIT 247
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DOE selects 9 universities for about $2.7M in advanced coal technologies research awards

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The US Department of Energy (DOE) has selected nine universities for awards for research projects that will continue to support innovation and development of advanced, lower emission coal technologies. million investment will be leveraged with additional funds from the universities to support $3.1 Brown University.

Coal 250
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In-use emissions report for Achates heavy-duty OP diesel shows substantial margin to most stringent EPA NOx proposed regulation

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Achates Power has released initial in-use NO x measurements from the cleaner, heavy-duty diesel engine it developed in a project funded by the California Air Resources Board (CARB) and several partners. Improving fuel economy both reduces the cost of operation and provides a commensurate reduction in CO 2 emissions. Earlier post.).

EPA 170
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Study suggests operational optimization can maximize the health and climate benefits of public transit investments in new bus technologies

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A study by a team from the University of British Columbia and Metro Vancouver suggests that optimized operational control strategies for transit bus fleets ultimately offer transit agencies a way to maximize the benefits of their capital investments in new, cleaner technologies. the contact of pollutants and people in space and time).

Climate 225