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Cummins and Tula study of Diesel Dynamic Skip Fire (dDSF) shows 74% reduction in NOx, 5% in CO2 on low load cycle

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a leader in propulsion efficiency, announced at SAE International’s WCX the results of their collaborative study on the effectiveness of Tula’s diesel Dynamic Skip Fire (dDSF) in reducing nitrogen oxides (NO x ) and carbon dioxide (CO 2 ) emissions on a Cummins X15 HD Efficiency Series diesel engine. Cummins Inc. Earlier post.).

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Study finds Tula dDSF software reduced NOx 41% and CO2 9.5% in Leibherr D966 diesel

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Based on simulations, Tula’s diesel Dynamic Skip Fire (dDSF) software ( earlier post ) allowed the reduction of NO x tailpipe emissions by 41% and CO 2 by 9.5%. 6-cylinder diesel engine, will also be used in further tests. Liebherr D966 inline engine tested with Tula’s diesel Dynamic Skip Fire software.

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JATO: European new car CO2 emissions highest average since 2014; shift from diesel to gasoline and SUVs rise

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An analysis by JATO Dynamics has found that average new vehicle CO 2 emissions in European increased in 2018, with the total average increasing by 2.4 g/km in 2018—the highest average of the last four years. At the same time, the sales growth of diesel cars fell from +7% to +1%. g/km to 120.5 g/km in 2015 to -1.4

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EEA: average CO2 emissions from new cars and new vans in Europe increased in 2018

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According to provisional data published by the European Environment Agency (EEA), the average CO 2 emissions from new passenger cars registered in the European Union (EU) in 2018 increased for the second consecutive year, reaching 120.4 g CO 2 /km in 2018. Vans registered in the EU and Iceland in 2018 emitted on average 158.1

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EEA final data shows average car CO2 emissions in Europe kept increasing in 2019

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SUVs are typically heavier than other cars and have more powerful engines and larger frontal areas—all features that increase fuel consumption. Moreover, the average mass of new conventional cars, excluding SUV, increased by around 22 kg from 2018 to 2019. Diesel vehicles constituted 31% of new registrations. g CO 2 /km.

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EIA: US energy-related CO2 fell by 2.8% in 2019, slightly below 2017 levels

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in 2018, the only annual increase in the past five years. The changes in US energy-related CO 2 emissions in 2019 offset the increase in 2018. CO 2 emissions from coal fell by 14.6%, the largest annual percentage drop in any fuel’s CO 2 emissions in EIA’s annual CO 2 data series dating back to 1973.

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Study finds renewable diesel blends deliver fuel consumption and CO2 benefits in Euro 5 engines

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Researchers from Istituto Motori - CNR in Italy and Eni report in a paper in the journal Fuel that blends of hydrocracked fossil oil (HCK) and Hydrotreated Vegetable Oil (HVO) as diesel fuels deliver fuel consumption (FC) and CO 2 savings based on the NEDC cycle. All fuels were FAME-free. —Napolitano et al.

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