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A team from the University of Tennessee and the National Renewable Energy Laboratory (NREL) has the fuel savings due to fueleconomy improvements over the past 43 years amount to approximately two trillion gallons of gasoline. Also since 1975, light-duty vehicle travel increased by 134% while fuel use increased by only 37%.
Innovators at NASA’s Glenn Research Center have developed an automated pulse-and-glide technique using a flywheel energy storage system for on-road vehicles; the technology, which NASA Glenn says can improve fueleconomy over existing internal combustion or battery hybrid systems by 40-100%, is available for licensing.
Researchers at the US Department of Energy’s Pacific Northwest National Laboratory (PNNL) have developed an onboard separation system that could support increased fueleconomy and lower greenhouse gas emissions as part of an octane-on-demand fuel-delivery system. That’s where PNNL’s onboard separation technology comes in.
This website, jointly maintained by the US Department of Energy and the US Environmental Protection Agency (EPA), provides information such as official EPA “window label” fueleconomy estimates for city, highway, and combined driving for all U.S.-legal drop in fueleconomy due to traveling 80 mph rather than 70 mph.
Laboratory and in-use fueleconomy results Source: NREL. The NREL team collected and analyzed in-service fueleconomy, maintenance, and other vehicle performance data on 11 hybrid (P100H) and 11 conventional diesel (P100D) step vans operated by the United Parcel Service (UPS) in Minneapolis. Click to enlarge.
Researchers at Oak Ridge National Laboratory (ORNL) have quantified the fueleconomy effects of some common driver practices and vehicle accessories or alterations—including underinflated tires, open windows, and rooftop and hitch-mounted cargo. liter four-cylinder engine, also suffered as its fueleconomy dipped 22% from 42.5
The new SuperTruck achieved a 54% increase in fueleconomy. and Peterbilt Motors Company, a division of PACCAR, released test results showing their demonstration SuperTruck tractor-trailer achieved a 54% increase in fueleconomy, averaging nearly 10 mpg US (23.5 Click to enlarge. Cummins Inc. David Koeberlein, Cummins.
At the US Department of Energy’s (DOE’s) Annual Merit Review meeting in Washington, DC last week, Michael Ruth from Cummins noted that the DOE program target for the project is a fueleconomy (CAFE) target of 26 mpg (9.05 Resources (DOE will publish Merit Review presentations on its website.). Earlier post.).
Sivak found that while the vehicle fueleconomy of the entire light-duty fleet improved by 40% (from 13 mpg US to 21.6 l/100km), because of the decrease in vehicle load, the occupant fueleconomy only improved by 17% (from 24.8 Combining these two effects yields a reduction of about 14% in the amount of fuel used.
With alternative fuel vehicles now approaching 1% of new vehicle production, however, they are in fact beginning to have a “ measurable and meaningful impact ” on overall new vehicle fueleconomy and CO 2 emissions. In the analysis, EPA uses overall fueleconomy in mpg equivalent (mpge) and tailpipe CO 2 emission values.
Prototype low-viscosity ionic liquid-additized engine oil demonstrated a 2% improved fueleconomy compared to Mobil 1 5W-30 engine oil (3.93% over the 20W-30 baseline oil) in standard fuel efficiency engine dynamometer tests. Jun Qu, Dinesh G. Bansal, Bo Yu, Jane Y. Howe, Huimin Luo, Sheng Dai, Huaqing Li, Peter J.
In a study published in the journal Energy Economics , MIT researchers have found that a fueleconomy standard is at least six to fourteen times less cost effective than a fuel tax when targeting an identical reduction in cumulative gasoline use (20% by 2050). —Karplus et al.
The US Environmental Protection Agency (EPA) and the US Department of Transportation (DOT) formally unveiled their joint proposal to set stronger fueleconomy and greenhouse gas pollution standards for Model Year 2017-2025 passenger cars and light trucks. L/100km), if the vehicles were to meet this CO 2 level all through fueleconomy.
For purposes of the new HD National Program, the heavy-duty fleet incorporates all on-road vehicles rated at a gross vehicle weight at or above 8,500 pounds, and the engines that power them, except those covered by the current GHG emissions and Corporate Average FuelEconomy standards for model year 2012-2016 passenger vehicles.
Adjusted CO 2 emissions and adjusted fueleconomy, MY 1975-2011. The report finds that CO 2 emissions rates and fueleconomy values reflect a very favorable multi-year trend beginning in MY 2005. The fleet-wide average real world MY 2011 personal vehicle CO 2 emissions value is 398 g/mi and average fueleconomy is 22.4
The US Environmental Protection Agency (EPA) and the Department of Energy (DOE) are releasing the 2014 FuelEconomy Guide, providing consumers with a resource to identify and choose the most fuel efficient and low greenhouse gas emitting vehicles that meet their needs.
These formulations have also been certified by the American Petroleum Institute (API) to exceed requirements of the most recent service category issued by API’s Lubricants Group—the API SN “Resourcing Conserving” designation. A key component of the ILSAC GF-5 designation is demonstrated fueleconomy improvement.
Especially with increased production volume of renewable fuels and optimized powertrain solutions for flexible fuel vehicles, there is a chance for combustion engines to not only remain in the market but also be sustainable for future vehicle. improvement in fueleconomy over the baseline engine for the Metro-Highway (M-H) cycle.
The BUSolutions demonstrator LCO-140H (Low Cost of Ownership–1 st 40-foot Hybrid) series hydraulic hybrid transit bus yields fueleconomy of 6.9 The goal was to develop a significantly lighter-weight, heavy-duty bus design that yields superior fuel efficiency to conventional buses at a lower lifecycle cost. Click to enlarge.
Further, at low loads, the ESTEC engine improves fuel consumption by 11% in the JC08 mode. Improving the vehicle fueleconomy is a must due to the climate change and energy issues. Economy with Superior Thermal Efficient Combustion (ESTEC),” SAE Technical Paper 2014-01-1192 doi: 10.4271/2014-01-1192. Kurauchi, T.
EPA released the latest edition of its annual report on trends in CO 2 emissions, fueleconomy and powertrain technology for new personal vehicles in the US. Fueleconomy has now increased in eight of the last nine years; average carbon dioxide emissions are also at a record low of 369 g/mile in model year 2013.
MY 2012 adjusted fueleconomy is 23.6 mpg fueleconomy improvement from MY 2011 to MY 2012 is the second largest annual improvement in the last 30 years. l/100 km) fueleconomy, which, if achieved, will again represent all-time records. Click to enlarge. l/100 km), which is 1.2 mpg, or 22%. Click to enlarge.
Researchers at Jilin University (China) have investigated the effect of gasoline components on fueleconomy, combustion and emissions in a GDI (gasoline-direct-injection) engine. The team subsequently followed up this first study with a second, exploring the effects in a PFI (port-fuel-injection) engine. —Han et al.
New analysis commissioned by Ceres, a sustainability nonprofit organization working with investors and companies, suggests that national fueleconomy and emissions standards can help increase the viability and international competitiveness of domestic automakers and suppliers. The analysis, “ What’s Driving the U.S —Alan Baum.
Cycle-based CAE analysis of fueleconomy contribution of critical technologies. This entails overall lean homogeneous combustion with early primary injection and an air/fuel ratio of ~20-30:1. Resources (DOE will publish Merit Review presentations on its website.). Earlier post.). Electric TiVCT system. Source: Ford.
The study found no statistically significant average effect of TNC entry on fueleconomy or transit use but did find evidence of heterogeneity in these effects across urban areas, including larger transit ridership reductions after TNC entry in areas with higher income and more childless households. Ward et al. 2020.101933.
To make driving less energy intensive than flying, the fueleconomy of the entire US fleet of light-duty vehicles would have to improve from the current 21.5 Without any improvement in vehicle fueleconomy, an average vehicle load of more than 2.3 Aviation Fuel Efficiency Market Background' persons to at least 2.3
Researchers at the MIT Joint Program on the Science and Policy of Global Change have compared the worldwide economic, environmental, and energy impacts of currently planned fueleconomy standards (extended to the year 2050) with those of region-specific carbon prices designed to yield identical CO 2 emissions reductions.
l/100 km) in 2016, the The ICCT team assessed increased consumer label fueleconomy (as opposed to the regulatory test fueleconomy) to 35 mpg (6.71 The resulting trajectory would reduce CO 2 emissions by half and increase fueleconomy by more than 60% from 2016 through 2030.
At that time, PSA said it expected the new D-EGR engines, due to be available in PSA vehicles by 2018, would consume 10% less fuel than their predecessors across all uses. Engines Fuel Efficiency Vehicle Systems' PSA has been a member of the HEDGE consortium (now at HEDGE-III ) since 2004. L GDI Engine,” (SAE 2014-01-1190 ).
The fueleconomy of the supercapacitor fuel cell hybrid, they noted, is higher despite the vehicle being heavier and more expensive. The main objective of this paper is to give an evaluation study of different FCHEV powertrains from the point of view of the fueleconomy, cost and powertrain component sizing.
The US Department of Energy (DOE) is proposing a significant revision in its procedures for calculating a value for the petroleum-equivalent fueleconomy of EVs for use in the Corporate Average FuelEconomy (CAFE) program administered by the Department of Transportation (DOT). Background. Proposed PEF.
The CNG buses had an average fueleconomy of 3.89 Using data from two days of CNG bus operation on the route serviced by the BEBs line, the NREL team found that the BEB fueleconomy was more than 8 times higher than that of a CNG bus operating exclusively on that route. mpgge, equating to 4.34 —NREL report.
The battery-electric locomotive is expected to reduce the environmental impact from emissions along the route in an efficient manner, while improving the fueleconomy for the entire consist by at least 10%. When running on the mainline, both the battery-electric and diesel locomotives will power the train.
The gasoline direct injection (GDI) engine is one of the most prominent technologies car manufacturers adopted to achieve the fueleconomy and carbon dioxide emission goals established in 2012 by the US Environmental Protection Agency. The market share of GDI-equipped vehicles increased from 2.3% W/m 2 over urban regions. Rawad Saleh.
In a new report, researchers at the University of Michigan Transportation Research Institute (UMTRI) have calculated the actual, on-road fueleconomy for the entire fleet of all vehicles in the US, and for different classes of vehicles, with primary interest in light-duty vehicles (cars, pickup trucks, vans, and SUVs), between 1923 and 2013.
The project, to be completed by early 2015, will scale up the passenger car TEG and integrate it with a 15-liter diesel engine to provide fueleconomy improvement and auxiliary power for combat vehicles. This follow-on light-duty vehicle project, funded in 2011, has a target of a 5% fueleconomy improvement.
Furthermore, popular four-stroke gasoline fuel efficiency improving techniques such as direct injection and turbocharging for downsizing/down speeding should have an additive, and in some cases, compounding efficiency benefit when combined with the advantages offered by the opposed-piston, sleeve-valve architecture. —Willcox et al.
The California Air Resources Board (CARB) yesterday voted to clarify its requirement that automakers must comply with California vehicle standards if they sell vehicles in the state. A provision adopted in 2012 establishes that cars meeting federal standards for model years 2017-2025 are “deemed to comply” with California’s standards.
The AFDC’s new Petroleum Reduction Planning Tool is an interactive Web application that allows fleet managers to evaluate the benefits associated with five alternative fuels—biodiesel, electricity, ethanol, natural gas and propane—along with a variety of efficiency measures, such as idle reduction and fueleconomy improvements.
The study concludes that, with appropriate policy support, the renewable hydrogen sector can reach self-sustainability (price point at parity with conventional fuel on a fuel-economy adjusted basis) by the mid- to late-2020s. per kilogram by 2025.
In other words, they found that they real-world fueleconomy benefit of adoption of HEVs may be better than for estimates based on EPA “sticker” fueleconomy alone. Our real-world VSP-specific FCR measurements suggest computed FTP (city) cycle CV fuel use would be nearly 2 times higher than for the HEV and 1.3
However, they also noted, high PTW efficiencies and the moderate fueleconomies of current compressed natural gas vehicles (CNGVs) make them a viable option as well. The study investigated the the WTW energy and emissions from the use of natural gas in CNGVs with a range of CNGV fueleconomy and natural gas compressor efficiency.
there is substantial variation in emissions based on where and when a vehicle is charged and operated, due to the impact of ambient temperature on fueleconomy and the spatiotemporal variability in grid carbon intensity across the United States. Woody et al. years for sedans, 1.4 years for SUVs, and 1.3 Maxwell Woody et al.
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