U. Houston-led project looking for new exhaust treatment catalysts for low-temperature lean-burn combustion engines

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A chemical engineer from the University of Houston is leading a $2.1-million project to find new catalytic materials that work at lower exhaust temperatures, allowing automakers to build vehicles that operate more efficiently while retaining the ability to clean emissions before they leave the tailpipe. Catalytic converters clean vehicle exhaust into nitrogen, water and carbon dioxide.

2017 35

Not Just Turbocharging: Exhaust Gases Can Generate Electricity, Too

Green Car Reports

The exhaust gases shooting out the tailpipes of internal-combustion cars aren''t just a form of pollution, they also represent wasted energy. One way to use some of that energy has been turbocharging: An exhaust-driven turbine runs a compressor that packs more air into the combustion chambers, allowing more gasoline to be injected, thus producing

Waste 27

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The importance of considering non-exhaust traffic emissions; the role of EVs

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the criteria pollutants and CO 2 that emerge with the exhaust from the tailpipe. However, there is more than 15 years of research showing that the contribution of non-exhaust primary particles to the total traffic generated primary particles is significant in urban areas. Non-exhaust PM factors include tire wear, brake wear, road surface wear and resuspension of road dust. Non-exhaust emissions require active regulation.

2016 25

Electric cars could save $13 billion in health costs by 2030 in 10 states: study

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Exhaust from gasoline and diesel cars contributes to air pollution that can lead to deleterious health effects after long exposure. emissions health Study plug-in cars air pollutionIt's entirely obvious that internal-combustion cars pose a threat not only to the environment, but also to human health. Now a new study from the American Lung Association in California aims to quantify the health.

Study shows two-stroke scooters dominant source of air pollution in many cities; asymmetric polluters

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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.

2014 20

Two new studies of road air pollution in London find detrimental effects on over-60s and unborn babies

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Exposure to air pollution on city streets is enough to counter the beneficial health effects of exercise in adults over 60, according to new research led by Imperial College London and Duke University. These findings, published in as open-access paper in The Lancet , show that short term exposure to air pollution in built-up areas such as London’s busy Oxford Street can prevent the positive effects on the heart and lungs that can be gained from walking.

Imaging study: air pollution impairs function of blood vessels in lungs

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Air pollution impairs the function of blood vessels in the lungs, according to a study of more than 16,000 patients presented at EuroEcho-Imaging 2016. The study examined the effect of air pollution on pulmonary haemodynamics (blood flow) in a population and in individuals. The authors examined whether any patient subgroups were more susceptible to the effects of air pollution. (A The volunteers were exposed to ambient air or dilute diesel exhaust with a PM 2.5

California ARB releases three studies showing fine particle pollution a threat to cardiovascular health

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or fine-particulate matter, is exhaust from vehicles, especially from diesel engines. The California Air Resources Board commissioned the studies to further investigate the connection between fine particulate pollution and public health impacts in California.

2011 38

U Toronto studies find traffic emissions spread farther than thought; 25% of cars causing 90% of pollution

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A trio of recently published studies from a team of University of Toronto engineers has found that air pollution could be spreading up to three times farther than thought, contributing to varying levels of air quality across cities. 25% of cars causing 90% of pollution.

2015 23

Rice University study of lung cells suggests anthropogenic carbon nanotubes are common pollutants

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These nanostructures are similar to those present in dusts and vehicle exhausts collected in Paris, as well as to those previously observed in ambient air in the USA, in spider webs in India, and in ice cores, the researchers found.

Study finds gasoline exhaust contributes more to formation of secondary organic aerosols than diesel

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Contrary to expectations, exhaust from gasoline vehicles contributes more to the production of secondary organic aerosols (SOA) than exhaust from diesel vehicles, according to a new study by scientists from the Cooperative Institute for Research in Environmental Sciences (CIRES), NOAA’s Earth System Research Laboratory (ESRL) and other colleagues. This is important because fine-particle pollution can cause human health effects, such as heart or respiratory problems.

Study finds high exhaust temperatures within NTE operation for heavy-duty diesels with aftertreatment systems contribute to high nanoparticle concentrations

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The transient results illustrate the gradual formation of the nucleation mode particles with continuous increase in exhaust temperatures. Although there is a great deal of effort focused on the engine control strategies for combustion-based reduction of both, actual deployment is limited due to the well-known trade-off between the two criteria pollutants (reducing one increases the other) as well as a fuel economy penalty incurred with some in-cylinder technologies, the researchers note.

Corning expands light-duty vehicle exhaust filter capacity in Germany

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These engines produce a high number of fine particulates that pollute the air. Corning Incorporated has boosted its light-duty vehicle filter capacity at its manufacturing facility in Kaiserslautern, Germany for both gasoline and diesel engined vehicles. Diesel vehicle manufacturers are striving for greater engine performance and fuel economy while meeting Euro 6 emissions standards under a myriad of driving conditions.

Harleys with no emission controls: a much bigger problem than you know?

Green Car Reports

Like cars, new motorcycles leave the factory with emissions-control equipment that radically reduce the volume of various pollutants released through their exhaust. emissions motorcycles Harley-Davidson ExhaustThose emission-control systems are only effective if they remain unmolested. However, a subset of both car and motorcycle owners sometimes interfere with that equipment when modifying.

Study finds “markedly” high levels of diesel exhaust present in commuter trains powered by locomotives in pull-mode

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Exposure to these pollutants was most elevated in the coach located closest to the locomotive: geometric means were 126,000# cm -3 for UFP, 249 μm 2 cm −3 for LDSA, and 17,800 ng m −3 of BC; these concentrations are much higher than those previously reported for other modes of public transportation.

Shanghai to spend $1.63B over next 3 years to target air pollution, especially PM2.5

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billion) on 53 projects targeting air pollution, especially for PM2.5 Exhaust from motor vehicles and boats account for 25% of the PM 2.5 , according to the Shanghai Environmental Protection Bureau said yesterday. According to the plan, local government will eliminate high-polluting vehicles and control discharges from key industrial plants to reduce PM2.5, Currently, there are over 200,000 high-polluting vehicles on local roads. Shanghai Daily.

IARC: Outdoor air pollution carcinogenic to humans

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The International Agency for Research on Cancer (IARC), the specialized cancer agency of the World Health Organization (WHO), has classified outdoor air pollution as carcinogenic to humans (Group 1). 161, Air Pollution and Cancer. After thoroughly reviewing the latest available scientific literature, the experts convened by the IARC Monographs Programme concluded that there is sufficient evidence that exposure to outdoor air pollution causes lung cancer (Group 1).

UBC study associates exposure to diesel exhaust with changes in DNA methylation

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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. In an open access study published in the journal Particle and Fibre Toxicology , a team from the University of British Columbia investigated the short-term effects of diesel exhaust inhalation on DNA methylation levels at CpG sites across the genome in circulating blood in asthmatics.

Study estimates 6% of lung cancer deaths in US and UK attributable to diesel exhaust

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In 2012, the International Agency for Research on Cancer (IARC), which is part of the World Health Organization (WHO), classified diesel engine exhaust (DEE) as carcinogenic to humans (Group 1). However, their attributable fraction AF estimates for occupational and environmental DEE exposure is generally consistent with some previous estimates for traffic-related air pollution and lung cancer mortality and incidence.

US study of miners links heavy exposure to diesel exhaust to increased risk of lung cancer death; researchers suggest implications for urban areas with high exhaust concentrations

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In a study of non-metal miners in the US, federal government scientists report that heavy exposure to diesel exhaust increased risk of death from lung cancer. According to the investigators, this is the first study based on estimates of quantitative historical exposure to diesel exhaust to yield a statistically significant, positive increase in lung cancer risk with increasing diesel exposure with adjustment for potential confounding from cigarette smoking.

HEI ACES study of lifetime animal exposure to New Technology Diesel Engine exhaust finds no lung cancer

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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. In their extensive analysis of the physical and chemical composition of the emissions, McDonald and colleagues found that the most abundant pollutants were carbon dioxide, carbon monoxide, NO, and NO 2.

Federal-Mogul marine piston ring technology reduces oil consumption and pollution from two-stroke diesels

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Federal-Mogul Powertrain, a division of Federal-Mogul Holdings Corporation, has developed a new piston ring for two-stroke diesel engines that reduces oil consumption and marine pollution by allowing the quantity of lubricant used to be greatly reduced.

New statistical method to detect ozone pollution hot spots and monitor instrument failure; combining PCA and MEWMA

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The method could be used as an automatic tool, and could act as an early warning system for dangerous pollution levels and potential technical problems, said Assistant Professor Ying Sun from the University’s Computer, Electrical and Mathematical Science and Engineering Division. Ground-level ozone is created by chemical reactions between other pollutants, especially oxides of nitrogen and carbon-based compounds released in vehicle exhausts and by many industrial processes.

Shanghai aims to tackle air pollution

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Beijing isn’t the only major Chinese city determined to tackle its air pollution issues – the city of Shanghai has now revealed its plans to do the same. It will spend 10.3billion yuan on 53 projects that will target air pollution – with a particular focus on PM2.5. Currently, exhaust from motor vehicles and boats [.]. Green cars Latest news air pollution China green cars Shanghai

Study finds use of high cetane fuel reduces all primary pollutants under advanced diesel combustion mode

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A high ignition quality (high cetane number) fuel is well suited for operation under an advanced diesel combustion mode (High Efficiency Clean Combustion, HECC) and leads to reductions in all primary pollutant emissions—i.e.,

First results from HEI/ACES murine study find few biologic effects from exposure to exhaust from new technology diesel engines

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The study—a component of the Advanced Collaborative Engine Study (ACES)—is exposing rats and mice for 16 hours a day to emissions from a heavy duty diesel engine meeting 2007 US EPA standards that reduce emissions of fine particles and other pollutants by more than 90% from levels emitted by older engines. A report from this phase found substantial reductions in particulate matter and other pollutants in the emissions from 2007 engines.

EEA report suggests road charges for heavy-duty goods vehicles should reflect varied health effects of pollution in different countries

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Air pollution externalities of 12–14 ton HGV on highway (Euronorm III) in euro cents. Overall, air pollution is estimated to cause 3 million sick days and 350,000 premature deaths in Europe. Source: EEA. Click to enlarge.

Researchers show mechanism by which diesel exhaust particles trigger respiratory “flare-ups”

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Researchers at Imperial College London, working with colleagues from King’s College London and University of British Columbia, have demonstrated a mechanism by which diesel exhaust particles directly affect the lungs to initiate symptoms such as a tightening of the airways and cough. Previous research has shown a strong association between urban air pollution and respiratory symptoms such as coughing, wheezing and shortness of breath, but the underlying mechanism has been unclear.

Lancet Commission report estimates pollution responsible for 9 million premature deaths globally in 2015; 16% of deaths

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Pollution is the largest environmental cause of disease and premature death in the world today, according to the newly released report detailing the adverse effects of pollution on global health by the The Lancet Commission on Pollution and Health. Pollution is costly.

France To Give Dirtiest-Diesel Drivers $11,500 To Trade For Electric Car

Green Car Reports

French drivers have long preferred diesel cars for their good fuel economy, but increased air pollution from diesel exhaust emissions has become a public health concern. That has led French officials to consider measures to curtail the use of diesels, particularly older models built before even rudimentary modern emissions standards were enacted

Pre-1997 cars forbidden in central Paris to cut emissions

Green Car Reports

A fairly direct way to eliminate air pollution from car exhaust emissions is to simply get rid of the cars themselves. Next month, Paris officials will attempt to do just that. Beginning July 1, all cars registered before 1997 will be banned from the city center on weekdays. DON'T MISS: In Paris, cars compete with other transit modes (and often. Europe Paris emissions France transportation policy

China study connects ozone pollution to cardiovascular health

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Ozone is formed through a chemical reaction that occurs when sunlight interacts with nitrogen oxides and other organic compounds that are generated by coal-burning, vehicle exhaust and some natural sources. They monitored indoor and outdoor ozone levels, along with other pollutants. In contrast, only 31 million Americans live in counties where other pollutants exceed EPA standards. Ozone is a difficult pollutant to control because its creation in the atmosphere is complex.

Long Beach Transit receives $600K grant for 40 Cummins near-zero CNG engines

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Long Beach Transit (LBT) recently received a $600,000 grant from the Mobile Source Air Pollution Reduction Review Committee (MSRC) of the South Coast Air Quality Management District Near Zero Incentive Program for the purchase of 40 Cummins “near-zero” compressed natural gas (CNG) engines. When diesel buses were standard throughout the industry, LBT was an early adopter of particulate traps to prevent harmful matter from escaping from the exhaust.

UC Riverside team wins EPA design contest with lawnmower exhaust aftertreatment device

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A team of University of California, Riverside Bourns College of Engineering students have won an EPA student design contest for developing an exhaust aftertreatment device that cuts CO, NO x and PM emissions from lawnmowers. A filter captures harmful pollutants.

Researchers find isolated Pd atoms efficient low-temperature catalysts to convert CO in automotive exhaust

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alumina supports along with a small amount of lanthanum oxide can efficiently turn the carbon monoxide in automotive exhaust into carbon dioxide at temperatures as low as 40 ?Celsius, C as a target for achieving removal of pollutants from exhaust.

Study finds in-car rush-hour exposure to some particulate pollution twice as high as previously thought

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A new study, part of the Atlanta Commuter Exposures (ACE) Study, has assessed on-roadway in-cabin particulate pollution (PM 2.5 ) collected from scripted rush hour commutes on highways and on non-highway side streets.

New ORNL non-precious metal catalyst shows promise as low-cost component for low-temperature exhaust aftertreatment

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Researchers at Oak Ridge National Laboratory (ORNL) have developed a ternary mixed oxide catalyst composed of copper oxide, cobalt oxide, and ceria (dubbed “CCC”) that outperforms synthesized and commercial platinum group metal (PGM) catalysts for CO oxidation in simulated exhaust streams while showing no signs of inhibition—i.e., PGM catalysts are the current standard for emissions aftertreatment in automotive exhaust streams.

Shipboard Technology for Scrubbing CO2 and Criteria Pollutants from Exhaust Gas

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It then sprays the treated sea-water into the exhaust funnel, where CO 2 is converted into bicarbonates, SO 2 into sulfates and NO x into nitrates through natural chemical processes. Singapore-based Ecospec Global Technology Pte Ltd, earlier this year unveiled CSNOx, a single system it claims can reduce NO x , SO 2 , CO 2 and PM emissions from ships.

California settles with cargo terminals over diesel engine exhaust

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Harris announced a settlement with cargo terminals at the ports of Long Beach and Los Angeles over diesel emissions from exhaust that requires the terminals to complete projects to reduce their diesel emissions and better notify the public of emissions. Attorney General Harris filed suit in June alleging the terminals violated Proposition 65 by exposing thousands of neighboring residents to high levels of diesel exhaust without giving the required warning.

New mixed-oxide catalysts shown as viable substitute for platinum catalysts for diesel exhaust aftertreatment

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Under laboratory-simulated diesel exhaust conditions, this mixed-phase oxide material was superior to Pt in terms of cost, thermal durability, and catalytic activity for NO oxidation. Mullite is not only easier to produce than platinum, but also better at reducing pollution in diesel engines.