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Specifically, this study examines actual fuel economy of cars and light trucks (pickup trucks, SUVs, and vans) from 1966 through 2019. (My In comparison, the change between 2008 and 2019 (from 4.59 million cars and light trucks sold in the United States in 2019 accounted for only 6.7% by Michael Sivak, Sivak Applied Research.
Specifically, this study examines actual fuel economy of cars and light trucks (pickup trucks, SUVs, and vans) from 1966 through 2017. In comparison, the change between 2008 and 2017 (from 4.59 million cars and light trucks sold in the United States in 2017 accounted for only 6.9% gallons per 100 miles to 5.09 total Btu).
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 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).
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
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.
In a policy update, the International Council on Clean Transportation (ICCT) reports that Japan’s Ministry of Land, Infrastructure, Transport and Tourism (MLIT) and Ministry of Economy, Trade, and Industry (METI) have finalized new proposed fuel economy standards for light- and medium-duty commercial vehicles with gross vehicle weights less than 3.5
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.
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 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. found that the city’s LEAFs will cost 41% less to own and operate than gasoline-powered vehicles. Earlier post.).
This increase was largely driven by an increase in emissions from fossil fuel combustion, which was a result of multiple factors, including more electricity use greater due to greater heating and cooling needs due to a colder winter and hotter summer in 2018 in comparison to 2017. Source: EPA. >.
A white paper by AMPLY Power, a company providing fleet charging as a service, finds that 25 of America’s largest metropolitan areas could save an average of 37% on fuel costs by electrifying their bus and light-duty vehicle fleets. AMPLY developed an interactive map to compare gas and electric fleet fueling costs. At about $0.19/kWh
Announced at the Advanced Automotive Battery Conference in Atlanta, the partnership will collaborate on new materials, processes and components to commercialize the aluminum-air battery, which could significantly extend electric vehicle range. Batteries Electric (Battery)' kWh/kg of Al—second only to the Li-air battery (13.0
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.
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.
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.
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
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
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.
However, although the state has made considerable progress decoupling economic growth from greenhouse gas (GHG) emissions, the rate of emissions decline appears to be slowing, due in part to a spike in transportation emissions attributed to an increase from light-duty vehicles. California’s electric-power sector was responsible for 19.1%
This analysis compares the costs of usable energy when we buy gasoline and electricity for driving and natural gas for keeping warm. Gasoline-powered vehicles. Gasoline-powered vehicles. Combustion of a gallon of gasoline (that includes ethanol) releases 120,333 Btu of energy. All-electric vehicles.
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.
liter SIDI intelligent direct injection engine along with advanced eAssist intelligent technology (light electrification, earlier post ), which work together to reduce fuel consumption by 20% compared with the standard model. By comparison, GM delivered 35,298 units of the LaCrosse in the US from January through the end of July 2011.).
The Evora 414E is powered by two EVO Electric motor packs driving the rear wheels through an Xtrac transmission with a 17 kWh battery pack that can be charged by the Lotus range extender engine or directly from the grid. In normal driving, Evora 414E will run purely on electricity stored in the battery pack for up to 30 miles (48 km).
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. Creutzig et al.
The use of compressed natural gas in vehicles yielded the least benefit, essentially matching the emissions of modern gasoline or diesel engines. Three direct substitution studies all showed far more favorable net impacts for replacing coal-fired electricity than for replacing gasoline or diesel vehicles.
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).
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.
Hybrid” plug-in hybrid system—the last offering all-electric trips of up to 60 km (37 miles) at speeds of up to 120 km/h (75 mph). EOLAB features materials such as magnesium and aluminium, which are extremely light and also much cheaper than titanium. Background. Hybrid system. For the EOLAB prototype, the Z.E. Fed by a 6.7
and ISFC reduction of 16% in comparison with an SI gasoline engine part load. In his presentation, de Boer noted that while gasoline SI efficiency is constrained by thermal efficiency, throttling and compression ratio, the Transonic system has low heat losses, unthrottled operation, and a high compression ratio.
Sales of light-duty vehicles with alternative powertrains in 2014 was a mix of increases and decreases over 2013 sales. The report— Total Cost of Ownership: A Diesel Versus GasolineComparison (2012-2013) —was underwritten by Robert Bosch LLC. —Bruce Belzowski. Alternative powertrain sales. Belzowski 2015.
The 2015 Impreza offers improved fuel economy, strengthening its position as offering the highest fuel economy of any gasoline All-Wheel Drive car offered in the US. As a comparison, the 2014 Impreza with automatic is EPA-rated at 27 mpg city, 36 mpg highway and 30 mpg combined.). 2015 Subaru Impreza.
Various combinations of commercially available technologies could greatly reduce fuel consumption in passenger cars, sport-utility vehicles, minivans, and other light-duty vehicles over the next 15 years without compromising vehicle performance or safety, according to a new report by the National Research Council.
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. emissions are less important because of the low contribution of light duty vehicles to national PM 10 and PM 2.5 Earlier post.]
In a recent article posted on the US Department of Energy (DOE) website, Jesse Schneider (BMW), the lead of the SAE hydrogen fueling standards SAE J2601, noted the importance of releasing the standards now, due to the impending deployment of fuel cell electric vehicles (FCEVs) by the automotive companies. Source: Jesse Schneider.
On 15 Sep, NHTSA and the US EPA proposed a joint rulemaking on fuel economy and greenhouse gas emissions for light duty vehicles: an average new car 34.1 Three of the NHTSA scenarios for penetration of technologies for light trucks for MY 2016. This reduces pumping losses at lighter loads in comparison to a larger engine.
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.
Suppliers identified a wide range of conventional and electric technology that could be used to meet the standards. Hybrid technology was also viewed as important, along with variable valve timing, gasoline direct injection, and mass reduction. 59% said that fuel-economy standards help spur job growth.
Currently hybrid and electric vehicles have a tiny share of the market in India and China and are seen as a higher-end product. Hybrid and electric vehicles can significantly reduce carbon emissions and other pollutants. Here also they used the US drive cycle as a basis for comparison. —lead researcher Anand Gopal.
A new study by Bloomberg New Energy Finance (BNEF) forecasts that sales of electric vehicles will hit 41 million by 2040, representing 35% of new light duty vehicle sales worldwide. This would be equivalent to nearly 8% of global electricity demand in 2015. However, that cost comparison is set to change radically in the 2020s.
Improve light-, medium-, and heavy-duty vehicle technologies. The investment plan for 2011-2012 is spread across 11 technologies and areas: Plug-In Electric Vehicles ($8 Million). Ethanol and other gasoline substitutes offer a significant opportunity for reducing both greenhouse gas emissions and petroleum use, the CEC staff says.
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.
The same highly electrified scenarios, however, could not satisfy 80% GHG-reduction targets, even assuming 80% decarbonized electricity and no growth in travel demand. The study estimated national fuel and emissions impacts from increasing reliance on electrified light-duty transportation, and the resulting implications for advanced biofuels.
At the recent SAE 2009 World Congress in Detroit, General Motors engineers presented the first front-wheel-drive (FWD) iteration of their two-mode hybrid transaxle, termed the 2MT70 ( earlier post ), scheduled for its first application in the Saturn 2009 VUE 2-Mode Hybrid light sport-utility vehicle later this year ( earlier post ).
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