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US DOE launches cost calculator to compare emissions and operating costs for alternative fuel and conventional vehicles

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The Vehicle Cost Calculator, an easy-to-use tool that allows users to compare emissions and lifetime operating costs of specific vehicle models, including conventional cars and trucks, as well as vehicles running on alternative fuels such as electricity, ethanol, natural gas, or biodiesel.

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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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First, it considers the performance of both mature and novel hydrogen production processes, multiple electricity generation pathways and several alternative drivetrains. Third, the analysis offers a novel comparison of drivetrain and energy carrier production pathways based on natural resource categories.

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Penn team proposes liquid-organic hydrogen carriers as endothermic fuels for hypersonic aircraft

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For comparison, the reaction of methylcyclohexane formed tars that quickly blocked the reactor, even at 500 °C on this catalyst. These results suggest that LOHC could serve as alternative fuels for endothermic cooling. The catalyst was stable over a period of at least several hours and no coking was observed. —Cao et al.

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MIT study finds including non-CO2 emissions from synthetic aviation fuel in lifecycle analysis of climate impact can lead to decrease in relative environmental merit; need for a holistic analysis framework

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An an example, they point out that an SPK fuel option with zero life cycle GHG emissions would offer a 100% reduction in GHG emissions but only a 48% reduction in actual climate impact using a 100-year time window and the nominal climate modeling assumptions in the paper. Many other factors have less quantifiable impacts.

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

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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. Life-cycle GHG emissions results for MCCI bioblendstocks produced from wet waste feedstocks, in comparison to 91 g of CO 2 e/MJ of petroleum diesel.

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FEV to show compressed natural gas light-duty concept engine with ATAC combustion system at 2011 SAE World Congress

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The engine is designed for use in light-duty vehicles, and demonstrates the potential of modifying passenger vehicle engines to achieve diesel-like fuel efficiency and power using CNG as an alternative fuel. FEV developed ATAC more than a decade ago, targeting large-bore engines in stationary and heavy-duty applications.

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