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vehicle fuel economy. Specifically, this study examines actual fuel economy of cars and light trucks (pickup trucks, SUVs, and vans) from 1966 through 2019. (My Calculated vehicle fuel economy is available going back to 1923. The graph below shows the changes in actual vehicle fuel economy from 1966 through 2019.
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.
vehicle fuel economy. Specifically, this study examines actual fuel economy of cars and light trucks (pickup trucks, SUVs, and vans) from 1966 through 2017. Calculated vehicle fuel economy is available going back to 1923. For 1966 through 1985, fuel economy was calculated from the information in a summary publication by the U.S.
From left to right: EV, PHEV, gasoline/diesel, gasoline/diesel. The US Department of Transportation (DOT) and the US Environmental Protection Agency (EPA) are jointly proposing changes to the fuel economy labels consumers see on the window of new vehicles in dealer showrooms. Color is integral to the new schemes. Source: EPA.
Environmental impacts of gasoline and E85. In a similar way, the full breadth of impacts attributable to conventional gasoline production, such as natural resource consumption and hazardous pollutant emissions, must also be considered in order to make balanced comparisons to biofuels. Process flow diagrams for E85 and 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. In all cases, HEVs and PHEVs save gasoline over conventional vehicles. Earlier post.).
City and highway cycle fuel-economy ratings are 132 and 105 MPGe, respectively. Honda Fit EV Efficiency Comparison. The 2013 Honda Fit EV ( earlier post ) received a combined adjusted Environmental Protection Agency (EPA) mile-per-gallon-equivalency (MPGe) rating of 118 MPGe—the highest yet awarded by the EPA. EPA Combined MPGe.
Diesel vehicles generally saved owners between $2,000 to $6,000 in total ownership costs during a three to five year period when compared to similar gasoline vehicles, according to data compiled by the University of Michigan Transportation Research Institute (UMTRI). —“Total Cost of Ownership”. Fuel Costs. Depreciation.
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.
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).
Drivers of diesel vehicles can save thousands of dollars in total ownership costs compared to similar gasoline vehicles, according to a University of Michigan Transportation Research Institute (UMTRI) study. Among their findings:??.
California gasoline consumption rose 0.6% While more fuel efficient cars and trucks are increasing fuel economy—and in light of some of the recently improved economic statistics—consumers remain cautious in their spending as the economy continues toward an uncertain recovery. We’re in an uncertain time. per gallon, a 37.1%
Fuel economy was similar between the gHEVs and diesel vehicles, except for the highest kinetic intensity drive cycle where the hybrid exhibited ~20% higher fuel economy. FedEx has deployed 20 gasoline hybrid electric vehicles (gHEVs) on parcel delivery routes in the Sacramento and Los Angeles areas.
The US Energy Information Administration’s (EIA) short-term forecasts of US gasoline consumption, which cover the current and upcoming calendar year, have risen 1.6% The latest Short-Term Energy Outlook (STEO) expects 2014 gasoline consumption to be 8.82 over the past year. million barrels per day (135.2 billion gallons).
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.
Methanol-to-gasoline process flow diagram. The resulting methanol would be blended with crude and transported via the trans-Alaska oil pipeline to Valdez, where it would be extracted from the oil and processed via Methanol-to-Gasoline technology into gasoline. Gasoline could be delivered from Valdez at $2.65 Source: EMRE.
Pinnacle says the engine achieves 30-50% better fuel economy in various drive cycle comparisons without the large cost penalty that can be associated with significant fuel economy improvement. The Pinnacle engine is based on a four-stroke, spark-ignited (SI), opposed-piston, sleeve-valve architecture.
The Global Fuel Economy Initiative ( GFEI ) ( earlier post ) launched its second three-year effort to improve vehicle fuel economy around the world at the International Transport Forum in Leipzig. litres of gasoline equivalent per 100km. —“Global Fuel Economy Initiative Plan of Action 2012-2015. Policy support.
Comparison of global passenger vehicle fuel consumption standards normalized to NEDC L/100km. Comparison of overall and annual average fleet fuel consumption reduction rates under proposed or enacted standards across regions. Source: ICCT. Click to enlarge. 100km (34 mpg US) in 2015. annually—between 2015 and 2020. Source: ICCT.
gasoline five cylinder; the 2.0L TSI turbocharged gasoline engine. The car exhibits significantly reduced fuel consumption and emission values compared to the previous model thanks to the switch to turbo-gasoline (TSI) and common rail turbodiesel direct injection engines (TDI). TDI Clean Diesel; and the 2.0L The Beetle 2.0L
In the third quarter of 2009, gasoline consumption in California increased to 3.772 billion gallons of gasoline compared to 3.736 billion gallons the third quarter last year, according to figures released by the state Board of Equalization (BOE). Year-on-year quarterly gasoline consumption comparison. Source: BOE.
Comparison of ISFC (@42.9 Compression ratio was set at 15:1, and the fuel used was 87 octane gasoline. For a comparison engine, Pinnacle used a 200 cc, conventional two-valve, air-cooled, carbureted model. MJ/kg) (4000 RPM) between 250cc Pinnacle and 200cc poppet valve engine. Source: Pinnacle. Click to enlarge.
Shell has introduced Nitrogen Enriched Gasoline in all three grades. Gunk (carbon deposit) formation on injectors can reduce fuel flow and fuel economy. Shell scientists used dual fuel engines to conduct head-to-head comparisons with other lower-quality gasolines. Shell dual-fuel testing. Click to enlarge.
As a comparison, the 2011 Lexus HS 250h Standard—which Ford uses as the MKZ Hybrid’s closest competition— carries an MSRP of $35,100; the premium model for 2011 carries an MSRP of $37,870. The Lincoln MKZ Hybrid delivers a 41 mpg fuel economy rating in the city, topping the 2010 Lexus HS 250h by 6 mpg. The 2011 Lincoln MKZ Hybrid.
For clarity, following Pareto improvements does not necessarily lead us to the globally best outcome, but offers relatively easy ‘wins-wins’, opportunities which are scarce in complex modern economies. Compared to the average of all the current-generation gasoline vehicles the company has tested, the Kia is 38% lower at 113.4
Researchers from Southwest Research Institute (SwRI) and Eaton have demonstrated the application of downspeeding and supercharging a diesel vehicle, in conjunction with optimizing transmission gear ratios and the shift schedule, to deliver a greater improvement in fuel economy than a downsped and turbocharged configuration.
downsized, turbocharged) gasoline engine, as operating an engine with higher compression ratios at low load can increase fuel economy compared to operating an engine with fixed compression ratio. In comparison, naturally aspirated engines have a higher compression ratio in the order of 1 to 1.5 Kleeberg, H., Tomazic, D.,
Researchers at the University of Wisconsin, led by Dr. Rolf Reitz, are investigating a blended dual-fuel (gasoline and diesel) concept to extend the operating range of partially premixed charge compression ignition combustion by using the varying fuel reactivity of the charge blend, which is determined in real time. Source: Rolf Reitz.
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 Optimized gear ratios enabling improvement in fuel economy.
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. It achieves gasoline equivalent fuel efficiency of more than 70 mpg US (3.36 Comparison of new Tucson ix FCEV (3rd generation) and Tucson FCEV (2nd generation.
Fuel flow rate (gasoline equivalent) under different engine loads for DMF, ethanol, and gasoline at 1500 rpm and ? = DMF has a volumetric energy density similar to that of gasoline formulations and 40% greater than that of ethanol. Credit: ACS, Zhong et al. Click to enlarge. Molecular structure of DMF. Credit: ACS, Zhong et al.
We use vehicles modeled in Autonomie to estimate vehicle costs and fuel economy along with fuel price projections from the Energy Information Administration (EIA), and focus on developing internally consistent estimates for other relevant cost parameters.
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
gasoline liter equivalent (GLE) and $0.94/GLE Cost breakdown of the minimum fuel selling price for MCCI fuel produced from (a) yellow grease and (b) swine manure HTL, in comparison to the diesel price of $0.79/GLE. —Ou et al. Among their findings: The estimated minimum fuel selling prices were $1.22/gasoline
Anhui Jianghuai Automobile Group Co Ltd (JAC) and Ricardo are collaborating on a project to develop the Ricardo HyBoost concept ( earlier post )—a combination of low-cost technologies to deliver improved performance and fuel economy which featured recently in the Ricardo Centenary celebrations —into volume production on a JAC vehicle.
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. Click to enlarge.
Not only is it more powerful and contains up to 30% better efficiency than traditional gasoline, etc. Do they receive HOV access for their improved fuel economy and ultra low emissions? This helps us to make better fuel economy and good emissions. You move from one pump to the other. Are these sales incentivized? Earlier post.).
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. coal, gasoline, or diesel fuel), distinctions that have been largely lacking in the policy debate. Source: Alvarez et al. Click to enlarge.
Also, the list of standard test procedures addressed in SAE J1711 has been expanded to cover all five major test cycle procedures (UDDS, HFEDS, US06, SC03, and Cold FTP) now being used to evaluate vehicle fuel economy. gasoline and Diesel fuel), alcohol-based liquid fuels (e.g., Earlier post.) compressed natural gas).
However, they also noted, high PTW efficiencies and the moderate fuel economies 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 fuel economy and natural gas compressor efficiency.
Based on test work already carried out, Ricardo estimates that a fuel economy improvement of up to 30% is possible with no loss of power or performance, using a downsized EBDI engine in place of currently available gasoline powertrain technology. fuel economy improvement. liter EBDI engine—resulting in up to a 16.8%
Promoting renewable energy and circular economy—including the shared use of vehicles and product design that supports reuse and recycling—will help maximize the benefits of shifting to electric vehicles, according to the report. —“Electric vehicles from life cycle and circular economy perspectives”.
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
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. >.
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