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Swiss WTW study finds important role for alternative fuels as well as alt drivetrains in move to low-emissions vehicles

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WTW energy demand and GHG emissions for EV and PHEV drivetrains for various electricity sources; gasoline ICE vehicle is solid square, hybrid the hollow square. Third, the analysis offers a novel comparison of drivetrain and energy carrier production pathways based on natural resource categories. Click to enlarge.

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JATO: new car CO2 emissions rise for the first time in a decade in Europe; diesel down, gasoline up, SUVs up

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This rise in average CO 2 emissions correlates with a decrease in demand for diesel cars across Europe—which produce lower CO 2 emissions than gasoline cars—and the rising popularity of SUVs, which emit higher average CO 2 emissions of 133.0 g/km, compared to gasoline cars, which had an average of 123.4 g/km CO 2 emitted.

Gasoline 244
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U. of Wisconsin RCCI combustion work progressing; modeled 53% gross indicated efficiency in a light-duty engine could result in 2x fuel savings compared to SI gasoline

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In a single-cylinder heavy-duty research engine fueled with gasoline and diesel, RCCI delivered near zero NO x and soot and peak gross thermal efficiency of 56%; fueling with E85 and diesel resulted in an indicated efficiency of 59%. Alternative Fuels. by volume 2-EHN (2-ethylhexyl nitrate).

Wisconsin 249
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Argonne study finds BEVs can have lowest scheduled maintenance costs, but highest cost of driving

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The study considers five different powertrains (internal combustion engine, hybrid-electric, plug-in hybrid-electric, fuel-cell-electric, and battery-electric) and 12 cost components (purchase cost, depreciation, financing, fuel, insurance, maintenance, repair, taxes, registration fees, tolls and parking, payload capacity and labor).

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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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The average emissions for diesel cars continued to be lower than their gasoline counterparts (3.2 If this trend continues and the adoption of alternative fueled vehicles doesn’t accelerate, the industry will need to take more drastic measures in order to meet the short- term targets.

Diesel 236
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Study finds butanol-gasoline blends effective to control soot from CI engines under Low Temperature Combustion

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(Left) Thermal efficiency and ( right ) soot from different gasoline-butanol blends at different EGR rates. A study by a team at Tianjin University found that the addition of n-butanol to gasoline for use in a compression ignition engine (CI) under Low Temperature Combustion (LTC) conditions has a significant effect on soot reduction.

Gasoline 210
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DOE researchers investigate economic and environmental impacts of converting wet waste to renewable diesel

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Among their findings: The estimated minimum fuel selling prices were $1.22/gasoline gasoline liter equivalent (GLE) and $0.94/GLE Cost breakdown of the minimum fuel selling price for MCCI fuel produced from (a) yellow grease and (b) swine manure HTL, in comparison to the diesel price of $0.79/GLE. —Ou et al.

Waste 434