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Uber is adding more polluting car trips to already-clogged European cities such as London and Paris, new analysis by European NGOs suggests —contributing to air pollution and climate change and exploding the company’s sustainability claims. Uber’s CEO tells us they ‘do the right thing, period.’
By shifting the biggest gasoline users into ZEVs first, AB 2816 also reduces the total number of ZEVs that would be needed to reach the state’s near-term target of cutting light-duty vehicle emissions in half by 2030. California’s biggest gasoline users currently are on track to be the last people to switch to ZEVs.
A study by European researchers has found that two-stroke (2S) scooters, although constituting a small fraction of the fleet, can dominate urban vehicular pollution through organic aerosol and aromatic emission factors up to thousands of times higher than from other vehicle classes. —Platt et al. Platt et al.
A study led by environmental health scientists at Columbia University Mailman School of Public Health examined the release of vapors from gasoline station vent pipes, and found benzene emissions were 10 times higher than estimates used in setback regulations that determine how close schools, playgrounds, and parks can be to the facilities.
The tailpipe real-world emissions were measured across four gasoline mid-sized sports utility vehicles from 2019 and 2020 model years, driven on a mix of urban and motorway routes. As testament to the filtration efficiency of the latest gasoline particulate filters (GPFs), tailpipe mass emissions are now as low as 0.02
A study by a pair of researchers at Northwestern University found that when fuel prices drove residents of São Paulo, Brazil, to switch from ethanol to gasoline in their flexible-fuel vehicles, local ozone levels dropped 20%. At the same time, nitric oxide and carbon monoxide concentrations tended to go up. 3 , respectively, being 2.7
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.
Diesel is currently taxed at a lower level than gasoline in Europe; however, since 2011 the EC has been considering reversing that situation by making energy taxes systematically reflect the CO 2 performance of the energy product. As on a volumetric basis, diesel contains more carbon than gasoline, the tax on diesel fuel would increase.
In a paper being presented at WCX SAE World Congress Experience in Detroit this week, a team from MIT is proposing the use of a flex-fuel gasoline-alcohol engine approach for a series-hybrid powertrain for long-haul Class 8 trucks. In a series hybrid system, the engine can always operate at its optimum speed, maximizing its efficiency.
Now, researchers at Imperial College London have shown that bioethanol production from bamboo in China is both technically and economically feasible, as well as cost-competitive with gasoline. An open access paper on their study is published in Biotechnology for Biofuels.
Today, operating the best-selling gas-powered commercial leaf blower for one hour emits air pollutants comparable to driving a 2017 Toyota Camry from Los Angeles to Denver. It’s time to phase out these super polluters. Smog-forming emissions from small engines will surpass those from passenger vehicles this year.
A “well-to-wheel” life cycle assessment (LCA) by a team from synthetic fuels producer Greyrock ( earlier post ), and the National Renewable Energy Laboratory (NREL) has determined the potential reduction of greenhouse gases and criteria pollutant emissions from the use of synthetic fuels directly converted from flare gas. billion liters (18.8
The green symbol and dashed arrow illustrate the large reductions in tailpipe VOC emission factors as precatalyst on-road gasoline vehicles were replaced by present-day vehicle fleets. Even so, lotions, paints and other products contribute about as much to air pollution as does the transportation sector. McDonald et al.
Infants born to women exposed to high levels of air pollution in the week before delivery are more likely to be admitted to a newborn intensive care unit (NICU), suggests an analysis by researchers at the US National Institutes of Health (NIH). Short-term exposure to most types of air pollutants may increase the risk for NICU admission.
The demonstrator reduces pollutant emissions across a wide range of driving conditions using advanced emission control technologies with an electrified combustion engine (48V mild hybrid). liter gasoline engine with direct injection and a peak power of 110 kW, equipped with variable valve timing and cylinder deactivation. Resources.
Cars powered by synthetic fuel produce the same amount of nitrogen oxide (NOx) emissions as cars burning conventional gasoline, according to the environmental group Transport & Environment (T&E).
OWI Science for Fuels GmbH, TU Bergakademie Freiberg and RWTH Aachen University are investigating Methanol-to-gasoline (MtG) production for opportunities to optimize the process to produce ideal MtG fuels. Synthetically produced methanol-to-gasoline could be a carbon-neutral fuel option for passenger cars.
The staff of the California Air Resources Board (CARB) is proposing amendments to the Fill Pipes Specifications to help ensure new motor vehicle fill pipes continue to be compatible and to form a good seal with Phase II recovery nozzles that are certified for use at California gasoline stations, thereby reducing overpressure.
Overall, this study provides valuable insights on the impacts of ethanol content and gasoline composition on the exhaust emissions from a current technology GDI FFV. Their paper is published in the ACS journal Energy & Fuels. Regulated emissions for all test fuels over the cold-start and hot-start LA92 cycles. —Yang et al. 8b02206.
E-fuels are made by combining green hydrogen with CO 2 to produce liquid fuel that can be similar to gasoline or diesel used in conventional engines (as well as kerosene used in aviation). The emissions were compared to the standard E10 EU gasoline. However, said T&E, particle pollution was far from eliminated. pollution.
The researchers assessed the gaseous, particulate, and genotoxic pollutants from two current technology gasoline direct injection vehicles when tested in their original configuration and with a catalyzed gasoline particulate filter (GPF). Their study is publishedin the ACS journal Environmental Science & Technology. 7b05641.
Fiat-Chrysler of America (FCA) will recall more than 850,000 gasoline-powered passenger cars and SUVs due to a problem with their catalytic converters. NO x emissions in California are the most important contributor to ambient ozone and a key contributor to fine particulate matter pollution (PM 2.5
pollution to heart damage. are diesel and gasoline direct injection (GDI) engines ( earlier post ). This could be due to a number of factors including better housing and workplace conditions, which reduce pollution exposure. Regarding how pollution might have these negative effects on the heart, Dr Aung said PM 2.5
A new study by an international team led by researchers from the Paul Scherrer Institute (PSI) in Switzerland has found that modern diesel passenger cars equipped with diesel particulate filters (DPFs) emit fewer carbonaceous particulates than gasoline-powered vehicles. The open-access study is published in the journal Scientific Reports.
The ORNL team conducted engine experiments with both 91 RON E10 gasoline and liquified petroleum gas (LPG). 1 for LPG only) improved engine efficiency by up to 30% compared with a production turbocharged gasoline direct injection spark ignition engine. higher H/C ratio) than gasoline. Splitter et al. Splitter et al.
Renault recently made public the findings of an internal study, published first in October 2011, detailing and comparing the lifecycle assessments (LCAs) of the battery-electric and two internal combustion engined versions (gasoline and diesel) of the Renault Fluence. dCi); gasoline Fluence 16V (1.6L); and the battery-electric Fluence Z.E. (22
As part of the new technology to achieve this vision, the company disclosed plans to introduce a next-generation gasoline engine called SKYACTIV-X in 2019. This new proprietary combustion engine combines the advantages of gasoline and diesel engines to optimize environmental performance, power and acceleration performance.
Audi remains convinced of the potential of the fuels e-gas, “e-benzin” (e-gasoline) and e-diesel and is continuing to pursue its e-fuels strategy. galons US), the largest batch yet produced—of synthetic Audi e-gasoline for initial engine tests. Audi “e-benzin” (e-gasoline) is essentially a liquid isooctane. Earlier post.)
The European Commission presented its proposal for Euro 7 standards to reduce air pollution from new motor vehicles sold in the EU. However, in 2050, more than 20% of cars and vans and more than half of the heavier vehicles are expected to continue to emit pollutants from the tailpipe.
Global Bioenergies and Audi signed a new agreement focused on the implementation of biomass residue feedstock usage, preparation of a path to commercialization and engine testing of new blends of renewable gasoline. The renewable gasoline is essentially a liquid isooctane and is currently produced from biomass in a two-step process.
An analysis of the early impacts of London’s new Ultra Low Emission Zone (ULEZ) found that in the first four months of its operation (March – July 2019) there was a reduction of 12,524 older, more polluting, non-compliant vehicles detected in the zone—a reduction of more than one-third.
Synthetic gasoline might not be cheaper or cleaner. GM has started establishing a franchise dealer network for its electric vans. And why did some of this year’s EVs and PHEVs not make the Best Car To Buy shortlist? This and more, here at Green Car Reports.
gasoline engines. FCA cooperated with CARB to resolve all allegations of violating Motor Vehicle Pollution Control Devices regulations. million civil penalty that will go to CARB’s Air Pollution Control Fund, which provides funding for projects and research to improve California’s air quality. FCA’s settlement includes a $2.8-million
The US Environmental Protection Agency (EPA) announced a proposed determination that emissions of lead from aircraft that operate on leaded fuel cause or contribute to air pollution that may reasonably be anticipated to endanger public health and welfare. Levels of airborne lead in the United States have declined 99% since 1980.
tonnes more CO 2 than an equivalent gasoline car over its lifetime due to a more energy-intensive refining of the diesel fuel; more materials required in the production of heavier and more complex engines; higher emissions from biodiesel blended in the diesel fuel; and longer mileage because fuel is cheaper. l/100 km (37.3 mpg US) and 7.1
UK Environment Secretary Michael Gove published a new Clean Air Strategy to cut air pollution backed up through new primary legislation. The UK said it will go further and faster than the EU in reducing human exposure to particulate matter pollution. Ending the sale of new conventional diesel and gasoline cars and vans by 2040.
Low-sulfur gasoline standards and regulations on power plants have successfully cut sulfate concentrations in the air, reducing the fine particulate matter that harms human health and cleaning up the environmental hazard of acid rain. The air in the United States and Western Europe is much cleaner than even a decade ago.
The US Environmental Protection Agency (EPA) released the Second Integrated Urban Air Toxics Report to Congress—the final of two reports required under the Clean Air Act (CAA) to inform Congress of progress in reducing public health risks from urban air toxics (also referred to as hazardous air pollutants or HAPs).
Concentrations of the harmful NO 2 pollutant across 30 major European cities could be reduced by up to 40% with the correct traffic policy measures, according to EU Joint Research Center (JRC) scientists. According to the World Health Organization (WHO), air pollution is the single largest environmental health risk in Europe.
Meeting standards for fine particle pollution, or PM 2.5 , is the San Joaquin Valley’s most critical air quality challenge. The San Joaquin Valley has the worst particulate matter pollution in California—and the worst in the nation for annual federal standards. The newly adopted 2018 Valley PM 2.5
Global Bioenergies is beginning the road-testing phase of renewable gasoline derived from its fermentative isobutene pathway. Global Bioenergies will use an EN228-compliant gasoline blend containing more than 34% of renewable, isobutene-derived, compounds to fuel a car on a circuit. Earlier post.) An Audi A4 2.0
The growth of electric vehicles is fun and exciting to those of us who are interested in the new tech, but the truly important target is to cut gasoline use in order to stop catastrophic climate change (not to mention deadly air pollution). So, more than any stat about EV sales, what’s important is seeing […].
Comparison of brake thermal efficiency and specific fuel consumption at rated power (ICOMIA Mode 5), hydrogen vs. gasoline engines. It, or a scaled-up version, could also provide a solution for the Asian motor vehicle fleet, in which two-stroke engine vehicles constitute a major share—and contribute significantly to air pollution.
Synthetic gasoline might not be cheaper or cleaner. GM has started establishing a franchise dealer network for its electric vans. And why did some of this year’s EVs and PHEVs not make the Best Car To Buy shortlist? This and more, here at Green Car Reports.
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