Green Car Congress

JUNE 12, 2023

A study led by Norwegian climate center CICERO has found that the global warming effect of leaked hydrogen is almost 12 times stronger than that of CO 2. Unlike exhaust from burning coal and gas that contains CO 2 , burning hydrogen emits only water vapor and oxygen. Sand et al. —Dr Sand The GWP100 of hydrogen. Sand et al.

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Hydrogen Global Ozone CO2 435

Green Car Congress

JANUARY 8, 2023

The Health Effects Institute (HEI) has launched two new studies funded under RFA 21-1, Quantifying Real-World Impacts of Non-Tailpipe Particulate Matter Emissions. The new studies are: Improved Characterization of the Real-World Contributions and Impacts of Non-tailpipe Particulate Matter Emissions ,” led by Greg Evans, University of Toronto.

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Emissions Pollution Exhaust London 353

Electrek

MAY 27, 2025

A new study is out which quantifies just how much EVs help not just in cutting harmful exhaust emissions, but also cutting other types of pollution that come from personal vehicles. But of course, public transport, biking and walking are even better.

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Clean Cleaning Exhaust Pollution 145

Green Car Congress

JULY 14, 2019

A new report released by the Air Quality Expert Group ( AQEG ) in the UK recommends as an immediate priority that non-exhaust emissions (NEE) are recognized as a source of ambient concentrations of airborne PM, even for vehicles with zero exhaust emissions of particles. —“Non-Exhaust Emissions from Road Traffic”.

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Exhaust Emissions Ireland Pollution 312

Green Car Congress

MAY 23, 2014

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. Click to enlarge.

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Pollution Exhaust Emissions Light 362

Green Car Congress

AUGUST 13, 2021

However, a new lifecycle study by a team from Stanford University and Cornell University has concluded that total greenhouse gas emissions from the production of blue hydrogen are quite high, particularly due to the release of fugitive methane.

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Hydrogen Gas Coal Exhaust 414

Green Car Congress

MAY 2, 2022

Accompanying the lower noise levels from bus traffic was a reduction of fatigue, day time sleepiness and low mood, a study at the University of Gothenburg shows. The Gothenburg study involved questionnaire surveys of randomly selected residents in two phases, before and after the switch to electric buses. Study report (in Swedish).

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Electrical Electric 2019 Environment 459

Green Car Congress

MARCH 10, 2012

A new study by researchers from Stockholm University concludes that automobile tires may be a potential previously unknown source of carcinogenic dibenzopyrenes—a type of high molecular weight polycyclic aromatic hydrocarbon (PAH)—to the environment. Non-exhaust traffic sources of particles. —Sadiktsis et al.

Environment 353

Environment Automobile Exhaust Oil 353

Green Car Congress

APRIL 12, 2019

Air pollution from diesel engines may worsen allergy-induced lung impairment more when tiny particles are filtered from the exhaust than when they are not, according to new research published online in the American Thoracic Society’s American Journal of Respiratory and Critical Care Medicine.

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Exhaust Diesel Pollution Canada 191

Green Car Congress

MARCH 26, 2019

Catalytic converters have been used in the US since the 1970s as a way to clean up pollutants from vehicle exhaust. As cars have become more fuel-efficient, however, they use less energy and the temperature of the exhaust gases is lower, which makes it harder to clean up the pollutants. —Yong Wang.

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Exhaust Pollution Convert Universal 270

Green Car Congress

NOVEMBER 11, 2018

The study is published in the journal Environment International. We found that primary pollutants—those that are emitted directly from a source, such as car exhaust—were associated with ED visits for cardiovascular and respiratory diseases. nitrogen oxides) and secondary (e.g. Krall et al. Krall, Howard H. Chang, Lance A.

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Pollution St. Louis Dallas Ozone 353

Green Car Congress

AUGUST 23, 2021

The open-access paper on the study is published in the RSC journal Energy & Environmental Science. There is no immediate concern for copper resources, but the average ore grade is declining as higher grade deposits become exhausted. Process flow diagram and construction phase boundary. Palmer et al.

Solar 459

Solar Hydrogen Emissions Production 459

Green Car Congress

OCTOBER 23, 2012

Contribution of gasoline and diesel exhaust to SOA over 0% to 50% diesel fuel use. The study determined that, depending on a region’s fuel use, diesel exhaust is responsible for 65% to 90% of vehicular-derived SOA, with substantial contributions from aromatic and aliphatic hydrocarbons. Gentner et al. Click to enlarge.

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Diesel Los Angeles Exhaust Gasoline 281

Green Car Congress

OCTOBER 10, 2012

On the other hand, it is well known that in an internal combustion engine up to 35% of the energy developed by the fuel combustion is dissipated in the exhaust gases. Exhaust gas exergy map of EcoCAR engine. They determined that the average rate of energy lost to the exhaust when on the NEDC is about 3.9 —Skarke et al.

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Waste PHEV Fuel Exhaust 312

Green Car Congress

JULY 17, 2014

Audi has built two technology studies with the “electric biturbo” technology it is developing ( earlier post ): the Audi A6 TDI concept is equipped with a new 3.0 Audi has built two technology studies with the “electric biturbo” technology it is developing ( earlier post ): the Audi A6 TDI concept is equipped with a new 3.0

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Audi Volt Exhaust Production 338

Green Car Congress

JUNE 25, 2013

A study by a team at Texas A&M University found that cylinder-to-cylinder variation in a multi-cylinder diesel engine increased substantially when transitioning to a low-temperature combustion (LTC) mode. LTC regimes are seen as a promising low-emissions, fuel-efficient alternatives to conventional diesel combustion.

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Texas Diesel Exhaust Emissions 311

Green Car Congress

NOVEMBER 16, 2021

The US Tire Manufacturers Association (USTMA) will produce cryogenically milled tire tread (CMTT) and provide samples to researchers to advance scientific study on tire and road wear particles (TRWP). We know that researchers face limitations in trying to create representative tire and road wear particles for accurate scientific study.

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Standards Manufacturer Exhaust Emissions 418

Green Car Congress

JUNE 12, 2023

A study by a team from UC Riverside has assessed the potential of increasing ethanol content in California reformulated gasoline (CaRFG) by investigating the exhaust emissions from a fleet of 20 Tier 3 light-duty vehicles. A baseline CaRFG E10 (10% ethanol by volume) fuel was splash-blended with denatured ethanol to create an E15 fuel.

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California Emissions Montana Gasoline 305

Green Car Congress

JUNE 28, 2023

A new NREL study has estimated the number, type, and location of the charger infrastructure needed to support 30–42 million light-duty electric vehicles on the road by 2030.

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Charging Puerto Rico Fleet Light 370

Green Car Congress

APRIL 11, 2019

About 4 million children worldwide develop asthma each year because of inhaling nitrogen dioxide (NO 2 ) air pollution, according to an open-access study published in The Lancet Planetary Health by researchers at the George Washington University Milken Institute School of Public Health (Milken Institute SPH).

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Pollution United Arab Emirates South Korea Las Vegas 360

Green Car Congress

AUGUST 5, 2019

According to a study commissioned by the Washington, DC-based Propane Education & Research Council (PERC), NO x emissions measured from propane autogas school buses were substantially lower than those measured from diesel school buses. —Ross Ryskamp, Ph.D., associate director for testing and development at CAFEE. billion settlement.

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West Virginia Diesel Emissions Virginia 312

Green Car Congress

NOVEMBER 28, 2014

The measurements of the retrofitted Euro III bus were an extension of a study of the Brighton & Hove Bus and Coach company fleet in partnership with HORIBA examining the real-world emissions of buses operating through a known pollution hot spot in Brighton city center.

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Hybrid Pollution Emissions Exhaust 299

Green Car Congress

NOVEMBER 1, 2019

Long-term residential exposure to locally emitted black carbon (BC) from traffic exhaust increases the risk of stroke even in low-pollution environments, according to a study by researchers at Karolinska Institutet and other universities in Sweden. g/m 3 ) of black carbon from traffic exhaust, the risk of stroke increased by 4%.

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Exhaust Carbon Pollution Universal 170

Green Car Congress

MAY 8, 2017

IAV has developed a particularly closed-coupled diesel exhaust gas aftertreatment (EAT) system. A key contribution to this performance must come from the exhaust gas aftertreatment system—across the entire speed and load range. This way, exhaust gas flows through DOC and SCRF before it enters the turbine.

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Exhaust Diesel Gas Emissions 210

Green Car Congress

NOVEMBER 23, 2012

Biodiesel (fatty acid methyl ester) derived from oleaginous microbes—microalgae, yeast, and bacteria—can effectively displace both petroleum diesel and biodiesel produced from plant oils, according to the findings of a new study by a team from Utah State University. —Wahlen et al. McCurdy, Robert M. Willis, Michael D.

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Diesel Oil Fuel Exhaust 316

Green Car Congress

JANUARY 9, 2015

Epigenetics is the study of these reactions.) While changes in DNA methylation have been associated with traffic-related air pollution in observational studies, the specific mechanisms have not been explored in a controlled study of asthmatics. —Jiang et al. The project is funded by AllerGen Inc.,

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Exhaust Diesel Pollution Canada 150

Green Car Congress

OCTOBER 24, 2022

New research from Chalmers University of Technology, Sweden, finds that the discharge water from ships’ exhaust gas treatment systems—i.e., Furthermore, the number of ships equipped with scrubbers have tripled since the study was carried out. Ytreberg et al.

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Exhaust Emissions Mariner Gas 170

Green Car Congress

DECEMBER 23, 2013

A team at Ford Motor Company’s Research and Innovation Center in Dearborn conducted a detailed study of the effect of ethanol blend level in emissions, using a 2006 model Mercury Grand Marquis flexible fuel vehicle (FFV) operating on E0, E10, E20, E30, E40, E55, and E80 on a chassis dynamometer. Engine-out exhaust contains typically 1?3%

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Emissions Ford Exhaust Fuel 294

Green Car Congress

OCTOBER 5, 2020

These clusters are more reactive than the single atoms and, hence, exhaust gases can be much better removed. The team’s studies show that neither nanoparticles nor isolated atoms reach the highest activity. The results are reported in Nature Catalysis. Noble metal catalysts are used for a wide range of reactions.

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Kits Exhaust Pollution Polymer 259

Green Car Congress

DECEMBER 15, 2017

To improve fuel efficiency, advanced combustion engines are being designed to minimize the amount of waste heat in the exhaust. As a result, future generations of exhaust after-treatment catalysts must perform at temperatures that are 100 °C lower than current catalysts. —Nie et al.

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Exhaust New Mexico Mexico Washington 150

Green Car Congress

JUNE 8, 2011

The study found that some of the CO 2 savings made during the use of low carbon vehicles is offset by increased emissions created during their production, and to a lesser extent, disposal. This work dispels the myth that low carbon vehicles simply displace emissions from the exhaust to other sources.

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Carbon Hybrid Production Gasoline-Electric 399

Green Car Congress

JULY 27, 2013

The presence of oxygen in the fuel has the potential to lower the exhaust particle number concentration in diesel engines, they concluded. Limited information is available in the literature about the exhaust soot particle number size distribution under these operation conditions for diesel and RME fuels. Labecki et al. Labecki et al.

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Diesel Exhaust Engine Emissions 252

Green Car Congress

JUNE 2, 2014

Although gasoline direct injection engines (GDI) are a favorable technology for reducing fuel consumption and greenhouse gas emissions, recent studies have shown that GDI vehicles could emit more PM than traditional PFI (gasoline port fuel injection) vehicles as well as heavy-duty diesel trucks equipped with diesel particulate filters.

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Exhaust Environment Gasoline Emissions 230

Green Car Congress

APRIL 18, 2016

A new study by a team from the University of Edinburgh and independent engineering company INNAS BV has found that, when factoring in the additional weight and non-exhaust PM factors, total PM 10 emissions from electric vehicles (EVs) are equal to those of modern internal combustion engine vehicles (ICEVs). Click to enlarge.

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Exhaust Emissions Gasoline-Electric 2016 150

Green Car Congress

OCTOBER 6, 2016

A study by two researchers at Sandia National Laboratories has concluded that building and operating a high-speed passenger ferry solely powered by hydrogen fuel cells within the context of the San Francisco Bay is technically feasible, with full regulatory acceptance as well as the requisite associated hydrogen fueling infrastructure.

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Hydrogen San Francisco Powered Power 326

Green Car Congress

JANUARY 27, 2015

The first study to conduct a comprehensive evaluation of lifetime exposure to new technology diesel exhaust (NTDE)—i.e., exhaust from heavy-duty diesel engines meeting EPA 2007 and later emissions requirements—has found no evidence of carcinogenic lung tumors. Earlier post.) —ACES report.

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Exhaust Diesel Engine 2007 150

Green Car Congress

JULY 21, 2023

A new study by researchers from Washington State University and SLAC National Accelerator Laboratory has found that a catalyst using a single or just a few palladium atoms removed 90% of unburned methane from natural gas engine exhaust at low temperatures. The work is published in the journal Nature Catalysis.

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Exhaust Engine Gas Carbon 195