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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. If CNG were to be eventually used in hybrids, the advantage of the electric generation/EV option shrinks. —Curran et al.
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. A sample of the second proposed label for an extended range electric vehicle. Color is integral to the new schemes.
City and highway cycle fuel-economy ratings are 132 and 105 MPGe, respectively. Honda Fit EV Efficiency Comparison. Ford Focus Electric. The FIT EV’s fuel consumption rating is 29 kWh per 100 miles; EPA-rated annual fuel cost is $500. EPA Combined MPGe. EPA Combined kWh/100m. Battery Capacity. EPA Label Range. Honda Fit EV.
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. EH&E) and Adjunct Professor of Environmental Health at Harvard’s T.H. gCO 2 e/MJ (range of 37.6
The Responsible Battery Coalition, in partnership with the University of Michigan Center for Sustainable Systems, launched a comprehensive research project to compare the total cost of ownership of gas and electric vehicles (EVs). Projections of future gasoline and electricity prices. Anticipated driving patterns.
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. —“Environmental Impacts”. Click to enlarge.
UPS van fuel economycomparison. UPS’ first-generation diesel hybrid delivery vans improved the on-road fuel economy by 28.9% The hybrids were part of UPS’ first cohort of 50 (prototype) hybrid electric vans. The 12-month average fuel economy for the P70 hybrid vans is 13.1 Source: Lammert 2009.
MY 2012 adjusted fuel economy is 23.6 mpg fuel economy improvement from MY 2011 to MY 2012 is the second largest annual improvement in the last 30 years. l/100 km) fuel economy, which, if achieved, will again represent all-time records. Change in Adjusted fuel economy, weight, and horsepower for MY 1975-2013. mpg, or 22%.
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 1 gallon of gasoline=33.7 Phoenix and Tucson, Ariz.;
Volkswagen has developed and deployed a gasoline engine that offers diesel-like fuel economy but is significantly cheaper to buy. By way of comparison: a conventional turbo system diverts part of the exhaust gas stream needed for the forced induction away from the turbine via a wastegate valve as a function of its operating state.
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.
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. times the maximum permissible tailpipe particle mass emissions.
Technology warming potential (TWP) for three sets of natural gas fuel-switching scenarios. (A) 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. Source: Alvarez et al. Click to enlarge.
Do they receive HOV access for their improved fuel economy and ultra low emissions? 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. Earlier post.).
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. compressed natural gas). There are two basic exhaust emissions and fuel economy tests described in J1711.
The study found that TCO for electric and diesel medium-duty urban delivery trucks were similar. The electric truck is relatively more cost-effective on the NYCC and when VKT demand is higher. Cost-competitiveness of the electric truck diminishes in drive cycles with higher average speeds. Credit: ACS, Lee et al.
The 2020 edition of US Environmental Protection Agency’s (EPA) comprehensive annual report on nationwide greenhouse gas (GHG) emissions shows that emissions increased from 2017 to 2018 by 3.1% (after accounting for sequestration from the land sector). Source: EPA. >. through the uptake of carbon and storage in forests, vegetation and soils.
Lincoln’s new MKZ Hybrid ( earlier post ) will be priced the same as its conventional gas sibling when it goes on sale this fall, with an MSRP starting at $35,180, including destination and delivery. Lincoln is the first automaker to offer luxury customers a premium hybrid vehicle with an MSRP that matches its conventional gas version.
Results of a lifecycle analysis by a team at the University of Michigan suggest that multiple types of natural gas-powered vehicles—i.e., Results of a lifecycle analysis by a team at the University of Michigan suggest that multiple types of natural gas-powered vehicles—i.e., —Dai and Lastoskie. 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.
The global push to convert the world to electric vehicles will cause supply chain complexities that could undermine the alternative energy transition in the United States, according to a new report from Rice University’s Baker Institute for Public Policy. The detailed report— Need Nickel? —Baker Institute report Need Nickel?
a leading provider of turnkey hydrogen solutions, intend to create a joint venture (JV) to produce and market green hydrogen to support growing fuel cell demand in the global hydrogen economy. Olin Corporation, a leading vertically integrated chlor alkali producer and marketer, and Plug Power Inc., 2018.02.132.
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). The diluent used in the dilbit can be natural gas condensate or naphtha.
The Toyota Highlander Fuel Cell Hybrid Vehicle – Advanced (FCHV-adv) ( earlier post ) achieved an estimated range of 431 miles on a single full tank of compressed hydrogen gas, and an average fuel economy of 68.3 The results were averaged for an estimated range of 431 miles, with an average fuel economy of 68.3
fuels suppliers; electric utilities; independent power producers; industrial gas companies; state and local government; research laboratories; academics; and other public, private, or non-profit entities. Hybrid electric vehicles. Plug-in hybrid electric vehicles. Battery electric vehicles.
Data was collected with the stock ignition system with a representative ignition strategy, followed by comparison to a drop-in replacement with the TPS nanosecond pulsed power ignition system (coil and plug). The Toyota 2.5L engine was tested at FEV North America and results indicate improvements over the stock ignition system.
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. Myth #2: Hydrogen gas is dangerous to store and use.
The work done to date represents an important part of our Japan strategy where we are focused on breakthrough technology development with select Japanese partners as well as penetration into the Japanese hydrogen economy with strategic channel partners in key applications.
WLTP measurements converted to NEDC values for comparison purposes.) In comparison to its predecessor, the 88 kW/120 hp 1.6-liter liter engine in the Grandland X delivers fuel economy improved by up to four percent. In comparison to its predecessor, the 88 kW/120 hp 1.6-liter l/100 km, extra-urban 3.9-3.8 With the new 1.5-liter
Sample consumer and societal break-even curves for BEVs, with data points for a compact diesel for comparison. The analysis, “Electric Cars: Ready for prime time?”, finds that the societal costs for electric cars and vans range from €7k to €12k (US$8,889 to $15,238) more than fossil-fueled equivalents. Click to enlarge.
Actual and projected greenhouse gas emissions for passenger vehicles by region/country through 2022. Cischke cited the recent agreement on one national standard for fuel economy and greenhouse gas emissions regulations as an example of how the government, the auto industry and the environmental community can work together toward common goals.
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. The number of people without access to electricity remained unacceptably high at 1.3 The passenger vehicle fleet doubles to almost 1.7
What if that ICE is now operating in a very narrow range, powering the electric vehicle? The category of LTC spans a range of specific technologies; these are of great interest as they promise to improve fuel economy, and reduce NO x and soot emissions by improving the in-cylinder combustion process. in the HWFET driving cycle.
The Continental Mobility Study 2020 shows that enthusiasm for electric cars is strong in China, while reservations still need to be overcome in Germany, France, the US and Japan. The study also shows that acceptance of electric mobility has increased in all five countries surveyed in recent years. Source: Continental.
seconds—the second quickest acceleration time in the Toyota lineup—the 2021 RAV4 Prime has an estimated 39 miles of all-electric range—the highest AER of any PHEV SUV on the market. As a technology comparison, the 2006-2012 RAV4 offered an optional 269-hp, 3.5-liter liter gas V6 engine that reached 0-60 mph in 6.3-seconds—a
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. China recently launched several EV demonstration programs (e.g., Earlier post.]
Hydrogen operation with the current WFS HPDI fuel system outperforms natural gas in terms of thermal efficiency, mainly due to lower equivalence ratio for H 2 at given fueling energy level, higher kinetic energy for H 2 jets as well as higher tolerance of H 2 combustion to fuel rich operation.
The committee’s estimates are based on a variety of factors including recent reports from regulatory agencies and other sources; component cost estimates from suppliers; discussions with experts; and comparisons of prices and fuel consumption of similar vehicles. The practicality of full-performance battery electric vehicles (i.e.,
At the recent SAE 2014 Hybrid & Electric Vehicle Technologies Symposium, Tomoaki Momose, manager of powertrain development from Nissan Technical Center North America, gave an update on the technical evolution of the core hybrid system. Clutch 1 (a dry single-plate clutch) is installed between the engine and the electric motor.
Comparison of biomass-to-wheel (BTW) efficiency for different biomass utilization scenarios. Sugar Fuel Cell Vehicles and BEVs charged with electricity from a fuel cell (green bars) were the most efficient. Huang and Zhang. Click to enlarge. Among the findings: The current corn ethanol/ICE scenario has η BTW value of ~7%—i.e.,
A study by Carnegie Mellon University researchers comparing life cycle greenhouse gas (GHG) emissions from different natural gas pathways for medium and heavy-duty vehicles (MHDVs) found that the GHG reduction potentials of the pathways vary sharply between non-Class 8 MHDVs (e.g., Study system boundary of natural gas pathways.
Peabody Energy and GreatPoint Energy signed an agreement to pursue development of coal-to-gas and coal-to-hydrogen projects in the United States and around the world with carbon capture and storage (CCS) that would achieve near-zero carbon emissions, while increasing the production of stranded oil via enhanced oil recovery. Click to enlarge.
The diesel-electric full-hybrid vehicle, weighing just 380 kilograms (838 lbs), offers an initial glimpse at how a future production version might appear. The L1 also has a Stop-Start system, which automatically shuts off the drive unit when the vehicle is at a stop and restarts it when the gas or E-pedal is pressed. Click to enlarge.
For 2021, Toyota has fully rebooted the Mirai, originally offered in 2016, as a premium rear-wheel drive sports-luxury fuel cell electric vehicle (FCEV) with striking design, cutting-edge technology, more engaging driving performance and a significantly longer EPA-estimated range rating. Luxury Car Chassis.
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