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ORNL study finds best current use of natural gas for cars is efficient production of electricity for EVs

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However, they also noted, high PTW efficiencies and the moderate fuel economies of current compressed natural gas vehicles (CNGVs) make them a viable option as well. If CNG were to be eventually used in hybrids, the advantage of the electric generation/EV option shrinks. —Curran et al. —Curran et al.

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Simulation study suggests ORC waste heat recovery system could deliver potential 7% improvement in fuel consumption in a PHEV on highway

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The analysis used the Ohio State University EcoCAR, a student prototype PHEV, as the basis for the preliminary fuel economy evaluation. On the other hand, it is well known that in an internal combustion engine up to 35% of the energy developed by the fuel combustion is dissipated in the exhaust gases.

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ORNL researcher explores impact of motor/generator and battery pack sizing on medium-duty PHEV; optimization framework

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GHG emissions in PHEV post-transmission configuration as an example of the optimization study output. Broadly, he found that for the PHEV pre-transmission configuration, there is a trade-off between fuel economy and GHG emissions when the motor/generator and battery size increases. Source: A.A. Malikopoulos.

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Argonne releases new cradle-to-grave lifecycle analysis of US LDV vehicle-fuel pathways

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The study provides a comprehensive analysis of the cost and greenhouse gas (GHG) emissions of a variety of vehicle-fuel pathways; the levelized cost of driving (LCD); and the cost of avoided GHG emissions. Selected fuel pathways were constrained to those deemed to be nationally scalable in the future. vehicle subsidies).

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ICCT: incremental technology can cut vehicle CO2 by half and increase fuel economy >60% through 2030 with ~5% increase in price

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l/100 km) in 2016, the The ICCT team assessed increased consumer label fuel economy (as opposed to the regulatory test fuel economy) to 35 mpg (6.71 The resulting trajectory would reduce CO 2 emissions by half and increase fuel economy by more than 60% from 2016 through 2030.

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Gov’t, industry, national labs collaborate on comprehensive cradle-to-grave LCA study and economic assessment of LDV GHG reductions

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Numerous LCA tools have been used to evaluate the GHG emissions associated with various vehicle-fuel technologies, including fossil fuels, biofuels, hydrogen fuel cell electric vehicles (FCEVs), hybrid electric vehicles (HEVs), plug-in hybrid electric vehicles (PHEVS), and battery electric vehicles (BEVs).

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ADEPT project to apply gasoline engine HyBoost system to diesel; 48V architecture; full hybrid fuel economy at much lower cost

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The Ricardo-led Advanced Diesel Electric Powertrain (ADEPT) project will apply 48V “intelligent electrification” concepts, mild hybridization and waste heat recovery in a Ford Focus diesel demonstrator. version of its vehicle (a 2009 Ford Focus) but with fuel economy and CO 2 emissions approaching those of a Prius.