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Researchers show mechanism by which diesel exhaust particles trigger respiratory “flare-ups”

Green Car Congress

Researchers at Imperial College London, working with colleagues from King’s College London and University of British Columbia, have demonstrated a mechanism by which diesel exhaust particles directly affect the lungs to initiate symptoms such as a tightening of the airways and cough.

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Bosch says it has solved diesel NOx problem; as low as 13 mg NOx/km even under RDE; refining existing technologies

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Bosch says that its engineers have refined existing diesel technolgoies to reduce emissions of nitrogen oxides (NO x ) so significantly that they already comply with future limits. There’s a future for diesel. Today, we want to put a stop, once and for all, to the debate about the demise of diesel technology.

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Volvo Trucks used SuperTruck learnings to boost efficiency, performance in 2017 powertrains; wave piston, turbocompounding, injection

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Key learnings from Volvo’s SuperTruck ( earlier post ) efforts played a critical role in the design and engineering of Volvo Trucks North America’s recently introduced 2017 powertrain, delivering improved fuel efficiency and performance to customers. A proven common rail fuel injection system was adapted to Volvo’s 2017 D11 and D13 engines.

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CPT, TU Wien study finds 48V mild diesel hybrid cuts engine-out NOx 9%, 4.5% fuel economy improvement

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A joint study by Controlled Power Technologies (CPT) and Austria’s Technische Universität Wien (TU Wien) into 48V diesel mild hybrid technology verified a 9% reduction of NO x in raw engine-out emissions, while retaining the fuel economy and CO 2 benefits of diesel engine technology.

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UCLA, ARB, WVU measure on-road particle numbers for heavy-duty diesel and CNG trucks in California

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In a new study, a team from UCLA, with colleagues from the California Air Resources Board (ARB) and West Virginia University, measured total particle number emission factors (PNEFs) from six newly certified heavy-duty vehicles (HDVs) powered by diesel and CNG totaling over 6,800 miles of on-road operation in California. g/bhp-hr NO x FEL.

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Cummins Emission Solutions introduces next-gen aftertreatment system EcoFit Single Module

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The smaller size enables better heat management and retention for improved fuel economy capability, while the simple single-pass exhaust flow design delivers low back pressure, meeting the needs of end-user customers. Currently, Cummins Emission Solutions offers two separate EcoFit on-highway systems: EcoFit Diesel Particulate Filter Systems.

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ORNL-led team developing breakthrough high-temperature, high-strength Al alloy for advanced light-duty engines

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Projected conditions for internal combustion engines in 2025 push light-duty engine exhaust temperatures into the low end of gas turbine regimes, Haynes said. The increasing piston, cylinder, head, exhaust valve and turbocharger temperatures represent significant structural materials—and cost—challenges.

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