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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.
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.
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 “Forze VIII”, a hydrogen fuel cell Le-Mans-style prototype, became the first hydrogen-electric vehicle to beat gasoline-powered cars in an official race. In a field of 43 gasoline-powered race cars, the hydrogen race car started the last race of the weekend from the fourth position. —Zhi Wei Cai, Team Manager.
The EPA has rated the 2012 Fisker Karma luxury extended range electric vehicle as consuming 65 kWh/100 miles (52 MPGequivalent) when running in all-electric mode, having a 32-mile all-electric range, and consuming 5.1 gallons US/100 miles (~20 mpg) when running the gasoline range-extending engine in hybrid mode.
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. Source: The ICCT.
Key Highlights on Tesla: As per the study, Tesla’s electric vehicles are expected to cover an average of 204,000 miles over their lifetime, surpassing all other brands regardless of powertrain, as noted in a report from Allt Om Elbil. This significantly outpaces the average for electric cars, which stood at 124,000 miles.
GDCI engine was significantly better than advanced production spark injection gasoline engines, and comparable to very efficient hybrid vehicle engines at their best efficiency conditions (214 g/kWh). This early work established that gasoline-like fuels with high resistance to autoignition are preferred for PPCI. Combustion stability.
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
Comparisons of life-cycle emissions from LUC phase for (a) sugar cane ethanol and (b) soybean biodiesel. Expansion in Brazil presents unique opportunities for both liquid fuel and electricity production. Even in the 100-year case, LUC emissions in CO and particulate matter are still higher than that of gasoline. 683 g PM 2.5
Renault’s new, more compact electric motor with integrated Power Electronic Controller. Renault has previewed a new electric vehicle motor, designed by its engineers and manufactured at its Cléon plant in France, as well as a new dual-fuel gasoline/LPG combustion engine. New Renault electric motor. Click to enlarge.
From left to right: EV, PHEV, gasoline/diesel, gasoline/diesel. The new design will also provide consumers with an estimate of the expected fuel cost savings over five years compared to an average gasoline-powered vehicle of the same model year. A sample of the second proposed label for an extended range electric vehicle.
With relatively few electric vehicles on the market, drawing direct comparisons with regular gasoline and diesel vehicles is surprisingly difficult--not many vehicles are sold with all three drivetrains. The Ford Focus is one, and Renault''s Fluence sedan is another.
Current case design block flow diagram of thermochemical gasoline from biomass-derived methanol and the methanol-to-gasoline process. Gasoline has a higher energy content than ethanol.) Source: NREL. Click to enlarge. gallon US ($0.52/liter). gallon US ($0.52/liter). gallon ($0.37/liter). per gallon ($0.41 per liter) and $1.49
The US Department of Energy (DOE) released the final report from its National Renewable Energy Laboratory (NREL) for a technology validation project that collected data from more than 180 fuel cell electric vehicles over six years (early 2005 through September 2011). These vehicles made more than 500,000 trips and traveled 3.6
In comparison, the change between 2008 and 2019 (from 4.59 million} plug-in electric cars and light trucks that were sold in the United States through December 2019 were still on the road, they would represent only about 0.6% gallons per 100 miles to 5.10 gallons per 100 miles) represents a compound rate of decrease of 2.3%
Volkswagen has developed and deployed a gasoline engine that offers diesel-like fuel economy but is significantly cheaper to buy. Compared with other gasoline engines, the intake valves of the 1.5 Chargers of this kind combined with gasoline engines are usually found only in high-performance cars. l/100 km (49 mpg US).
Following the introduction of the Bosch electric axle-split hybrid in PSA Peugeot Citroën diesel vehicles ( earlier post ), the two companies are now planning to develop a hydraulic hybrid powertrain for passenger cars. For these models as well, Bosch supplies the components for the electrical powertrain. Click to enlarge. l/100km (81.1
The US Department of Energy (DOE) has published a Beyond Tailpipe Emissions Calculator that provides estimates of total greenhouse gas (GHG) emissions associated with driving an electric vehicle (EV) or plug-in hybrid electric vehicle (PHEV), including emissions from the production of electricity used to power the vehicle.
In comparison, the change between 2008 and 2017 (from 4.59 In terms of fuel consumption per distance driven, the change between 1973 (the year of the first oil embargo) and 1991 (from 7.75 gallons per 100 miles to 5.09 gallons per 100 miles) represents a compound rate of decrease of 2.3% gallons per 100 miles to 4.48
They found that, on a life cycle basis in comparison to gasoline, the direct to ethanol technology can provide a 67% to 87% reduction in carbon footprint on an energy equivalent basis for initial ethanol concentrations (given in weight percent) ranging from 0.5% MJ/MJEtOH down to 0.20 g CO 2 e/MJEtOH down to 12.3 wt % to 5 wt %.
Self Financial, a fintech company, has compared the running costs of electric and non-electric vehicles in each state. Across the US the average annual cost of running an electric vehicle is $2,721.96, while gasoline vehicles cost an average of $3,355.90 per year to run—a difference of $633.94
In 1975, General Ernesto Geisel, then-president of Brazil, ordered the country’s gasoline supply mixed with 10% ethanol. The level was raised to 25% over the next five years, which was intended to maintain a constant Brazilian gasoline supply for an ever-increasing demand. These were arguably the first flex-fuel vehicles.
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.
On this basis, and of Pareto efficiency, Emissions Analytics argues, until battery-electric vehicles can reach certain performance characteristics, government and industry support should switch immediately from EVs to full hybrids to create maximum welfare. Every air pollutant is more than 90% its limit.
According to a new lifecycle analysis by a team at Carnegie Mellon University, a battery electric vehicle (BEV) powered with natural gas-based electricity achieves around an average 40% lifecycle greenhouse gas (GHG) emissions reduction when compared to a conventional gasoline vehicle. Earlier post.).
The average emissions for diesel cars continued to be lower than their gasoline counterparts (3.2 The shift in fuel type from diesel to gasoline—combined with an increase in registrations in the SUV segment—is crucial to understanding the change in CO 2 emissions.
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.
Cellulosic ethanol produced by grain ethanol producer POET’s Project LIBERTY ( earlier post ) first commercial cellulosic ethanol plant will reduce greenhouse gas emissions (GHG) by 111% relative to gasoline, an independent lifecycle analysis (LCA) compiled by Air Improvement Resource , Inc., EPA’s standard for gasoline emissions is 92.9
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).
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. electricity generation or transportation) and by the fuel being replaced (e.g., Source: Alvarez et al. Click to enlarge.
FedEx has deployed 20 gasoline hybrid electric vehicles (gHEVs) on parcel delivery routes in the Sacramento and Los Angeles areas. This hybridized, gasoline-fueled vehicle is equipped with a three-way catalyst, which results in very low tailpipe gaseous emissions. Barnitt, May 2010 ( NREL/TP-540-47693 ).
Honda Fit EV Efficiency Comparison. Ford Focus Electric. The 92 kW (123 hp) coaxial electric motor generates 189 ft-lb of torque, and is teamed to a chassis with a fully-independent suspension and a driver-selectable 3-mode electric drive system adapted from the CR-Z Sport Hybrid. EPA Combined MPGe. EPA Combined kWh/100m.
Hyundai Motor America has introduced its next-generation hydrogen fuel cell vehicle, the Tucson ix Fuel Cell Electric Vehicle (FCEV). The Tucson ix FCEV can travel more than 400 miles (644 km) on a single fueling, a 76% improvement over its predecessor, and a range equal to a gasoline-powered car. Gasoline equiv. Specifications.
We have therefore developed a hydrogen combustion engine that aims to match the power and torque of current high-performance gasoline engines as a concept study. liter eight-cylinder gasoline engine—or rather, its digital data set, since we conducted the entire study virtually using engine performance simulations.
Ford’s Michigan Assembly Plant is starting production of the 2012 Focus Electric ( earlier post )—a five-passenger, battery-electric car Ford expects will achieve more than a 100 miles per gallon equivalent (MPGe) fuel economy rating. 1 gallon of gasoline=33.7 Phoenix and Tucson, Ariz.; Portland, Ore.; Raleigh-Durham, N.C.;
Consumers who purchase an electric vehicle will find that lifetime costs to own the vehicle are competitive with conventional and hybrid vehicles, according to an analysis conducted by the Electric Power Research Institute (EPRI). —“Total Cost of Ownership for Current Plug-in Electric Vehicles”.
BMW unveiled the iX3 electric SUV ( earlier post ), offering full electric mobility in a BMW X model. Electric power consumption combined in the WLTP test cycle is 19.5 – 18.5 The BMW X3 is the first model to be available with a gasoline or diesel engine, plug-in hybrid drive system or all-electric drive system.
liter, direct and port fueled injection, inline 4-cylinder gasoline engine commonly used in the Camry line of vehicles. The “Dynamic Force Engine” achieves one of the world’s best thermal efficiencies of 40% in gasoline powered vehicles according to Toyota. The Toyota 2.5L
note that the focus of their study was motivated in part by the unprecedented rise in popularity of electric two-wheelers in China. While conventional vehicle (CV) ownership and electricity consumption in China are both increasing rapidly—annual growth rates during the past decade were ? Today, e-bikes outnumber CVs 2:1.
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.
An analysis by a team at Argonne National Laboratory (ANL) has found that by 2045, some configurations of battery electric vehicles (BEV) could become almost as energy dense as a conventional vehicle. Comparison of powertrain energy density at the wheel of BEVs as a ratio to gasoline-powered conventional vehicle. Vijayagopal, R.,
After more than 11,000 miles driving solely on electric power in our 2011 Nissan Leaf and Chevy Volt, we now find our Volt in the body shop. The 2012 Ford Focus is one of the most impressive of the latest compact cars, but in comparison to day-to-day driving.
While alternative powertrains still represent a small percentage of market share compared to gasoline engines, the report noted, clean diesels saw a 10% increase in 2014 sales over 2013 sales, while hybrids saw a 10% decrease, pure electrics saw a 20% increase and compressed natural gas saw a 33% decrease. Belzowski 2015. Model year.
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