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A study based on a spatial and longitudinal travel dataset by a team from Lamar University, Iowa State University and Oak Ridge National Laboratory found that whether plug-in hybrids (PHEVs) have lower energy costs that conventional gasoline vehicles (CGVs) or hybrid-electric vehicles (HEVs) depends on charger coverage.
The federal subsidy significantly favors larger battery packs to a stronger degree than their potential for additional gasoline savings. A 2011 paper by Michalek and colleagues found that strategies to promote adoption of HEVs and PHEVs with small battery packs offer more social benefits (i.e., Peterson and Michalek 2012.
Households with plug-in hybrid vehicles (PHEVs) and smart meters actively managed how, when and where they charged their cars based on electricity rates but rarely took advantage of online feedback, according to a two-year study by a team at the University of Colorado Boulder’s Renewable and Sustainable Energy Institute ( RASEI ).
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).
In addition to its regional and temporal scope, this study is distinct from earlier LCA literature in four key aspects: This study considers the lifetime average carbon intensity of the fuel and electricity mixes, including biofuels and biogas. This is especially important for assessing the GHG emissions of PHEVs.
The analysis used the Ohio State University EcoCAR, a student prototype PHEV, as the basis for the preliminary fuel economy evaluation. Internal combustion engines have been significantly improving in the past decade, after the adoption of technologies such as Gasoline Direct Injection, mild electrification, downsizing and turbocharging.
Powertrain elements in the Outlander PHEV. Mitsubishi Motors Corporation (MMC) will present the global debut of the new Outlander SUV plug-in hybrid electric vehicle (PHEV) at the 2012 Paris Motor Show later this month. liter 4-cylinder MIVEC gasoline engine, has a targeted fuel economy in excess of 61 km/liter (143.5
Net emissions resulting from the use of plug-in hybrid electric vehicles (PHEVs) depend on the efficiency of the conventional vehicle fleet; PHEV CD (all-electric, charge-depleting mode) efficiency; charging strategy; battery pack capacity; driving patterns; and generator mix used for charging. Scott Peterson, J.
A study by researchers at the University of Texas found that in general, use of plug-in hybrid electric vehicles (PHEVs) can lead to an increase in ozone during nighttime hours (due to decreased scavenging from both vehicles and EGU stacks) and a decrease in ozone during daytime hours.
One of SDG&E’s converted PHEVs. The third phase of a SDG&E multi-year in-use study on plug-in hybrid electric vehicles showed that plug-in hybrids offer significant improvements in gas mileage and reductions in emissions when compared with standard hybrid-electric and gasoline internal combustion engine (ICE) vehicles.
The study by Dr. Jeremy Michalek and colleagues found that while a fleet with plug-in hybrid electric vehicles (PHEVs) with universal high electric range (i.e., gal gasoline, $0.11/kW gal, electricity prices below $0.16/kW gal gasoline, $0.11/kW gal, electricity prices below $0.16/kW
The Electrification Coalition released two case studies outlining how two cities— Houston, Texas and Loveland, Colorado —are saving money by using electric vehicles (EVs) in their vehicle fleets. A similar study examining Loveland, Colo. Earlier post.). In tough economic times, these savings cannot be ignored.
WTW GHG emissions of vehicles across driving patterns and PHEV charging scenarios. Solid portions represent GHG emissions associated with gasoline propulsion. Patterned portions represent GHG emissions associated with electric propulsion. Solid left bar = hydro electricity scenario.) Credit: ACS, Raykin et al.
In a new study published in the journal Applied Energy , Carnegie Mellon University (CMU) researchers found that controlled charging of plug-in hybrid electric vehicles (PHEVs) reduces the costs of integrating the vehicles into an electricity system by 54–73% depending on the scenario.
A new analysis of the real-world usage of more than 100,000 plug-in hybrid electric vehicles shows a large deviation between on-road CO 2 emissions and fuel efficiency and the official vehicle type-approval values. Patrick Plötz, Coordinator of the Business Unit Energy Economy at Fraunhofer ISI and lead author of the study.
A team of researchers from Carnegie Mellon University has analyzed the impact of plug-in hybrid electric vehicle (PHEV) battery pack size on fuel consumption, cost and greenhouse gas emissions over a range of charging frequencies (distance traveled between charges). But batteries are heavy and expensive.
Researchers at the University of Waterloo (Canada), with a colleague in Sweden, have used a power management strategy greatly to extend the durability of onboard fuel cells in a plug-in hybrid electric vehicle: an increase of 1.8, Architecture of FC-PHEVs with three fuel cell stacks as considered in the Zhang et al. —Zhang et al.
Strategies to promote adoption of hybrid electric vehicles (HEVs) and plug-in hybrid electric vehicles (PHEVs) with small battery packs offer more social benefits (i.e., In this study we assess, under a wide range of scenarios, how much externality damage reduction plug-in vehicles can offer in the US and at what cost.
Fleet penetration of PHEV by 2020 in different scenarios. The first character of the scenario represents the price of gasoline at simulation termination, the second represents “yes” or “no” on a manufacturer subsidy, and the third represents “yes” or “no”on a sales tax exemption. Source: Sullivan et al. Click to enlarge.
Three months since the introduction of the Ultra-Low Emissions Zone (ULEZ) in London, results of a year-long trial in the capital suggest that plug-in hybrid electric (PHEV) commercial vehicles could present the most practical, readily available option for businesses trying to meet clean-air targets in cities. million (US$5.9-million)
If CNG were to be eventually used in hybrids, the advantage of the electric generation/EV option shrinks. The study investigated the the WTW energy and emissions from the use of natural gas in CNGVs with a range of CNGV fuel economy and natural gas compressor efficiency. Their open access paper is published in the journal Energy.
It adds an assessment of electrically chargeable vehicle configurations, such as plug-in hybrid, range extended, battery and fuel-cell electric vehicles. In 2003 JEC issued its first Well-to-Wheels study, a type of analysis which takes into account the entire energy lifecycle of fuels and powertrains and their possible combinations.
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. The study by a team at the Swiss Federal Institute of Technology Zurich, reported in the Journal of Power Sources , is novel in three respects, the researchers said.
Researchers at the University of Colorado, Boulder and the National Renewable Energy Laboratory (NREL) modeled the emissions impact had plug-in hybrid electric vehicles (PHEVs) replaced light duty gasoline vehicles in the Denver, Colorado area in summer 2006. Brinkman et al. For other areas, where PM2.5
The study by Aaron Brooker, Matthew Thorton and John Rugh aimed to identify possible pathways to cost-effective vehicle electrification by evaluating a variety of scenarios and technology improvements. The gasoline, on the other hand, is a large expense, especially for the conventional vehicle. Source: Brooker et al. Click to enlarge.
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).
The study, in press in the Journal of Power Sources , examines the efficiency and costs of current and future EVs, as well as their impact on electricity demand and infrastructure for generation and distribution, and thereby on GHG emissions. Compare GHG emissions and costs of PHEV and BPEV with those of regular cars.
According to a recently published report commissioned by the Victoria (Australia) Department of Transport from AECOM, electric vehicle (EV) technology offers the state of Victoria potentially significant economic benefits by the late 2020s. electricity supply to provide the necessary protections from higher voltages. Source: AECOM.
Preliminary findings from a study by researchers at Argonne National Laboratory (ANL) show that current compressed natural gas (CNG) technology applied in conventional light-duty vehicles leads to a 2% fuel consumption penalty when the engine is not resized (i.e., up-sizing”) to deliver comparable performance to the gasoline-fueled version.
Their paper, to be published in the summer issue of the journal Issues in Science and Technology , is based on their earlier study that found that strategies to promote adoption of hybrid electric vehicles (HEVs) and plug-in hybrid electric vehicles (PHEVs) with small battery packs offer more social benefits (i.e.,
A newly released University of Michigan study found widespread consumer interest in buying plug-in hybrid electric vehicles; however, the cost of the cars is much more influential than environmental and other non-economic factors as a predictor of purchase probabilities. Source: Curtin et al. 2009) Click to enlarge.
The new study projects the increasing dominance of the production phase in terms of lifecycle CO 2 impacts. The report builds on an earlier study, “Preparing for a Life Cycle CO 2 Measure” written for the LowCVP by Ricardo. The new study is a “streamlined” LCA based largely on secondary data available from published literature.
For the study, they define EVs as including both battery-electric (BEV) and plug-in hybrid electric (PHEV) vehicles. Only in the case of high EV market share and a high renewable electricity standard (RES) do EVs make a material contribution to greenhouse gas (GHG) reductions, they found. Credit: ACS, Choi et al.
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. the cost is less than that of the gasoline ICEV. High production volume is assumed unless explicitly specified.
As a result, they suggested, vehicle window stickers, fuel economy standards, and life cycle studies using average lab-test vehicle efficiency estimates are incomplete. Their study is published in the journal Energy Policy. —Karabasoglu and Michalek. They used the Powertrain Systems Analysis Toolkit (PSAT) SP1 Version 6.2,
A comprehensive survey of major power management control algorithms for hybrid-electric (HEVs) and plug-in hybrid electric vehicles (PHEVs) proposes that future work will need to consider the vehicle as part of a larger system which can be optimized at an even larger scale.
Californians own more than 12,000 plug-in electric vehicles (PEVs), roughly 35% of all plug-in vehicles in the United States. The more than 12,000 PEVs provide both consumer and environmental benefits, according to a new study by the California Center for Sustainable Energy (CCSE).
In a new study, a team from Carnegie Mellon University (CMU) and Ford Research and Advanced Engineering set out to determine the optimal mix for the fleet of mid-size personal vehicles in the US—while maintaining current driving patterns—with the goals of minimizing greenhouse gas emissions (GHG) or cost. Traut et al.
Two recent studies explore different aspects of the use, potential impact and valuation of PHEVs. A study by Jonn Axsen and Ken Kurani from the Institute of Transportation Studies, UC Davis, estimates electricity and gasoline use under three recharging scenarios. Axsen and Kurani. Plug and play.
The marginal electricity emissions rate will be higher than the average rate from all generation—likely to exceed 600 gCO 2 equiv.kWh -1 during most hours of the day and months of the year—and will likely be more than 60% higher than the value estimated in the Low Carbon Fuel Standard. Source: McCarthy et al. Click to enlarge.
A pair of researchers at the University of Michigan have used “big data” mining techniques to evaluate the impact of adopting plug-in electric vehicles (PEVs) in the Beijing taxi fleet on life cycle greenhouse gas emissions based on the characterized individual travel patterns. In particular, consumer travel patterns (i.e., —Cai and Xu.
China’s State Council has published a plan to develop the domestic energy-saving and new energy vehicle industry, which includes battery-electric vehicles, plug-in hybrid vehicles and fuel cell vehicles. China has made big progress in electric car technologies but still lags behind other countries in certain areas, said the report.
Left, global light-duty fleet in the electric-favoring case; right, the hydrogen-favoring case. In both electric- and hydrogen-favoring cases, availability of low-carbon electricity and hydrogen prolonged the use of petroleum-fueled ICE vehicles. Top, without CCS and CSP; bottom, with CCS and CSP. Credit: ACS, Wallington et al.
Opel presented the new all-wheel drive PHEV (plug-in hybrid electric vehicle) version of the Grandland X. turbocharged gasoline engine and two electric motors for a system output of up to 300hp. litr†e turbocharged direct injection four-cylinder gasoline engine specially adapted to the hybrid application; and.
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