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The US Department of Energy (DOE) launched the “ eGallon ” as a quick and simple way for consumers to compare the costs of fueling electric vehicles vs. driving on gasoline. Today’s national average eGallon price is about $1.14, meaning that a typical electric vehicle could travel as far on $1.14 worth of gasoline.
Well-to-wheel (WTW) greenhouse gas emissions for in situ SAGD and surface mining pathways generated employing GHOST/TIAX/ GHGenius combination and comparison with SAGD, mining and conventional crude oil literature pathways (all results are on a HHV basis). 74% of WTW emissions in our oil sands pathways. Click to enlarge.
A new study by a team from Environmental Health & Engineering (EH&E) has found that greenhouse gas emissions from corn ethanol are 46% lower than those from gasoline—a decrease in emissions from the estimated 39% done by previous modeling. gCO 2 e/MJ) which is 46% lower than the average carbon intensity for neat gasoline.
In terms of fuel consumption per distance driven, the change between 1973 (the year of the first oil embargo) and 1991 (from 7.75 In comparison, the change between 2008 and 2019 (from 4.59 A minor increase between 2008 and 2019 (from 21.8 gallons per 100 miles to 5.10 gallons per 100 miles to 4.50
Renault’s comparison of the carbon footprint of EV and ICE vehicles over production, operation and end of life. The publication gives the opportunity for an “apples-to-apples” comparison between the environmental impacts of the two types of powertrains: same manufacturer, same model, same boundary conditions. Gasoline Fluence 16V.
Change in primary oil demand by sector and region in the central New Policies Scenario, 2010-2035. Under the WEO 2011 central scenario, oil demand rises from 87 million barrels per day (mb/d) in 2010 to 99 mb/d in 2035, with all the net growth coming from the transport sector in emerging economies. Click to enlarge. billion in 2035.
In terms of fuel consumption per distance driven, the change between 1973 (the year of the first oil embargo) and 1991 (from 7.75 In comparison, the change between 2008 and 2017 (from 4.59 A minor increase between 2008 and 2017 (from 21.8 gallons per 100 miles to 5.09 gallons per 100 miles to 4.48
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).
Comparison of current federal subsidy to base case assumptions showing lifetime fuel savings (HomeEve charging scenario). An EPA estimate based on the Chevy Volt’s reported efficiency is also included for comparison. Earlier post.). per gallon saved while subsidizing 16 kWh battery PHEVs at roughly $4.50
The oil price shocks of the 1970s led the Brazilian government to address the strain high prices were placing on its fragile economy. Brazil, the largest and most populous country in South America, was importing 80% of its oil and 40% of its foreign exchange was used to pay for that imported oil.
Volkswagen also has a modular gasoline engine toolkit, the MOB (Modularen Ottomotor Baukasten), which includes the new EA211 series. The MQB allows the integration of alternatives, for example, natural gas, hybrid and electric drives, in addition to the conventional gasoline and diesel power units. Oil and vacuum pump.
A) CNG light-duty cars vs. gasoline cars; (B) CNG heavy-duty vehicles vs. diesel vehicles; and (C) combined-cycle natural gas plants vs. supercritical coal plants using low-CH 4 coal. On the one hand, a shift to natural gas is promoted as climate mitigation because it has lower carbon per unit energy than coal or oil. Click to enlarge.
Comparison of brake thermal efficiency and specific fuel consumption at rated power (ICOMIA Mode 5), hydrogen vs. gasoline engines. This is due to raw, externally premixed fresh charge comprising air, fuel and lube oil being short-circuited into the exhaust during the scavenging process. Oh and Plante. Click to enlarge.
Researchers at the Norwegian University of Science and Technology (NTNU) have compared the emissions resulting from the production, use, and end-of-life of electric and internal combustion engine vehicles (EVs and ICEVs) in a full life-cycle analysis (LCA). This has led to a general perception of EVs as an environmentally benign technology.
In a new, comprehensive study, a team from Argonne National Laboratory, Stanford University and UC Davis ITS has estimated the well-to-wheels (WTW) GHG emissions of US production of gasoline and diesel sourced from Canadian oil sands. g CO 2 e/MJ for US conventional crude oil recovery. This range can be compared to ∼4.4
Depletion of fossil energy resources [kg oil-eq.]. A recent PSI study led by environmental scientist Christian Bauer found that a battery electric car is already the most environmentally friendly option in Switzerland and many other countries, even when the manufacture of the battery is figured in.
Toyota Motor Corporation has developed a new series of fuel-efficient gasoline engines that achieve improved thermal efficiency. liter gasoline engine in which Toyota is employing the Atkinson cycle—normally used in dedicated hybrid engines—and a compression ratio of 13.5:1. Click to enlarge. One of the engines is a 1.3-liter
The company says that some of the most promising projects are the Turbosteamer ( earlier post ); the Thermoelectric generator (TEG) ( earlier post ); engine encapsulation; and a waste heat exchanger for oil heating. Research project Turbosteamer: comparison of the heat exchanger generation 1 (top) and generation 2 (bottom).
CO 2 emissions of the C 180 in comparison to its predecessor [t/car]. Over the entire lifecycle of the C 180, the lifecycle analysis yields a primary energy consumption of 521 gigajoules (corresponding to the energy content of around 16,000 liters of gasoline); an environmental input of approx. Source: Mercedes-Benz. Click to enlarge.
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. First, it considers the performance of both mature and novel hydrogen production processes, multiple electricity generation pathways and several alternative drivetrains.
Water consumption intensity of ethanol from corn grain and crop residue and the avoided/displaced water use credits assigned to coproducts: DGS and electricity. Comparison with fossil fuels. BW consumption intensities of gasoline from conventional crude oil and Canadian oil sands range from 0.41 Click to enlarge.
Battery electric cars emit less greenhouse gases and air pollutants over their entire life cycle than petrol and diesel cars, according to a European Environment Agency (EEA) report. Emissions are usually higher in the production phase of electric cars, but these are more than offset by lower emissions in the use phase over time.
A recent discussion paper published by the Belfer Center for Science and International Affairs, Harvard Kennedy School, concludes that significant penetration of electric cars into the US marketplace will only occur if the vehicles are competitive with conventional vehicles, not only on a cost basis, but also on an attribute basis.
Comparison of GHGenius, JACOBS, TIAX, and the new PRELIM gasoline greenhouse gas (GHG) estimates using base case estimates and variations from the scenario analysis. The configurations are differentiated by the presence of gas oil hydrocracking; fluid catalytic cracking (FCC); delayed coking; and residual hydrocracking.
In regions where the share of coal-based electricity is relatively low, EVs can achieve substantial GHG reduction, the team reports in a paper in the ACS journal Environmental Science & Technology. 2020),” which plans to achieve accumulated sales of 500,000 new-energy vehicles (including hybrids and EVs) by 2015, and 5 million by 2020.
The study, published in the journal Environmental Research Letters , concluded that even under highly optimistic assumptions the compressed-air car is significantly less efficient than a battery electric vehicle and produces more greenhouse gas emissions than a conventional gas-powered car with a coal intensive power mix.
Rice University researchers have determined a more effective way to use natural gas to reduce climate-warming emissions would be in the replacement of existing coal-fired power plants and fuel-oil furnaces rather than burning it in cars and buses. However, residential uses and exports of natural gas were not considered in those comparisons.
When we take the new DNA—electric drive, diverse energy sources, self-driving and driverless, connected and coordinated, vehicles with a specific purpose—we can put them all together to rethink the entire system. quads with battery electric and fuel cell vehicles—about 12% more. Hypothetically, it would take 5.9
Not only is it more powerful and contains up to 30% better efficiency than traditional gasoline, etc. During his presentation at the TDI Efficiency Rally, UMTRI researcher Bruce Belzowski first presented a summary of his analysis of the total cost of ownership of diesels with a comparison to that of their gas vehicle counterparts.
In the process of this development, Daihatsu overhauled all aspects of the engine, the transmission, and the body structure, to maximize energy efficiency and achieve almost a 40% increase in fuel efficiency comparison with the Mira 2WD/CVT without idle reduction functions. L/100km) in JC08 mode. Running resistance lowered.
In the case of the 2500HD bi-fuel, the two main trade-offs are a reduction in power and torque in CNG mode compared to gasoline mode, and the loss of a portion of the bed of the truck to the 3,600 psi CNG tank and its box-like enclosure. (It Emissions reductions (%) of new NGVs compared to new gasoline and diesel vehicles (2012).
For comparison, the 2009 Toyota Highland Hybrid achieves an EPA-estimated rating of 26 mpg combined fuel economy and has a full-tank range of approximately 450 miles. With premium grade gasoline currently priced at about $3.25, the gasoline-powered V6 Highlander hybrid is estimated to travel approximately 26 miles at a cost of about $3.25.
EPA projects advanced transmissions (6+ speeds and CVTs), gasoline direct injection (GDI) systems, and turbocharged engines will be installed on at least 15% of all MY 2013 vehicles. The majority of the emissions and fuel savings from current vehicles, EPA noted, is due to new gasoline vehicle technologies. Click to enlarge.
Comparison of fuel consumption of Omnivore, homogeneous Gasoline Direct Injection (GDI) and Spray-Guided GDI engines. The first testing phase of Lotus Engineering’s Omnivore variable compression ratio, flex-fuel direct injection two-stroke engine ( earlier post ) has been successfully completed on gasoline. Click to enlarge.
Washington, DC’s current focus is electric vehicles (EVs) and electric technology. The Environmental Protection Agency (EPA) continues to employ outdated mileage formulas (55 city 45 highway) that do not accurately represent consumers driving habits and dramatically tilts manufacturers into producing electric-vehicle solutions.
BCG comparison of the CO 2 reduction potential and cost of different technologies. As a result, BCG concludes, the electric car faces stiff competition from ICEs (internal combustion engines) and, based solely on total cost of ownership (TCO) economics, will not be the preferred option for most consumers. Source: BCG. Click to enlarge.
Extensively researched and variously subsidized over the years, AFV options include: electricity (for battery cars or plug-in hybrids), hydrogen (for fuel cell cars), natural gas, and bioenergy, including ethanol and other biofuels that can be used in combustion engines or as a renewable feedstock for producing electricity or hydrogen.
liter Theta II engine (169 hp/126 kW at 6,000 rpm and 156 lb-ft/212 N·m of torque at 4,500 rpm); a 6-speed automatic transmission; a 30 kW (151 lb-ft/205 N·m) electric motor; and a lithium-polymer battery pack. Hyundai’s Hybrid Blue Drive has an all-electric mode and a parallel drive mode. 30kW, 151 lb-ft electric motor.
Public-private investment initiatives, government funding for infrastructure and consumer subsidies, falling production costs and notably, the commitment to future OEM launches of fuel cell electric vehicles (FCEVs)—all indicate a clear road to adoption.
Interrelationship between EV energy economy (y-axis) and and the electricity grid emissions intensity (x-axis) in determining full fuel cycle greenhouse gas emissions. The source of the electricity used to power electric vehicles is a key issue in Victoria. Source: “Environmental Impacts”. Click to enlarge.
At the North American International Auto Show (NAIAS) in Detroit, tier one supplier KSPG is showcasing systems for cars, light and medium-duty commercial vehicles and components for efficient fuel and emission reduction for both gasoline and diesel vehicles. An electric motor controls the valve setting, between shut and open.
On average, a 25% reduction in carbon dioxide equivalent (CO2-eq) emissions can be expected on a well-to-wheel (WTW) basis when replacing gasoline by light-duty vehicles (LDVs) running on compressed natural gas (CNG). In this context, it appears that NGVs may compare favorably in many—but perhaps not all—national contexts.
study found that German consumer purchase considerations for fully battery-operated electric vehicles (EVs) remain relatively low compared to other powertrain technologies and that most current EV offerings miss consumer’s EV purchase and ownership requirements. A Gartner, Inc. Germany and Electromobility. Earlier post.).
One of the fastest ways to accelerate your transition to an eco-friendlier lifestyle is to switch to an electric vehicle (EV). miles per gallon, that equates to about 420 gallons of gasoline burned annually. An internal-combustion engine vehicle will cost about 4½ times more to operate and maintain than a comparable electric car.
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