Carbon, Exhaust, Ozone and Technology

UK researchers report that alcohols in windshield washer fluid are major unreported source of VOCs emissions from cars, including EVs

Green Car Congress

JUNE 8, 2023

In a recent open-access paper published in ACS’ Environmental Science & Technology , researchers from the University of York report that alcohols in windshield washer fluid account for a larger fraction of real-world vehicle emissions than previous estimates have suggested. —Cliff et al. Andrews, James R. Hopkins, Ruth M.

Emissions

Emissions Exhaust Cars Ozone

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

Green Car Congress

NOVEMBER 13, 2016

A new statistical method developed by researchers at KAUST (King Abdullah University of Science and Technology, Saudi Arabia) can detect abnormal ozone levels within large bodies of monitored data. Ozone is the reactive form of oxygen that contains three atoms per molecule (O 3 ) rather than the normal two. Khadraoui, S. &

Ozone

Ozone Saudi Arabia Pollution France

Reducing Black Carbon Emissions and Ground-Level Ozone Would Provide Immediate Benefit Against Climate Change

Green Car Congress

AUGUST 21, 2009

Reducing emissions of black carbon soot and ground-level ozone would quickly make a considerable dent in the climate change problem and would also contribute to public health and protect crop yields, according to an essay in the September/October issue of Foreign Affairs. Besides a danger to breathe, ozone lowers crop yields.

Climate Change

Climate Change Ozone Climate Carbon

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

Green Car Congress

MAY 2, 2016

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. Further, a 2013 review by Denier van der Gon et al. Background.

Exhaust

Exhaust Emissions Belgium Gasoline-Electric

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

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.)

Exhaust

Exhaust Diesel Engine 2007

EPA proposes approval of new ozone plans for the two of the worst Air Quality Zones in US: California’s San Joaquin Valley and South Coast

Green Car Congress

SEPTEMBER 9, 2011

US EPA Region 9 8-hour ozone trends, 1979-2000. These State Implementation Plans (SIPs) are the roadmaps to meeting the 1997 8-hour ozone National Ambient Air Quality Standards (NAAQS) of 0.08 In 1997, EPA first established the 8-hour ozone standard, which replaced the older 1-hour ozone standard (0.12 Source: EPA.

Ozone

Ozone EPA Pollution 2002

CARB releases results of multi-year E15 study; multiple air quality benefits with slight reduction in fuel economy

Green Car Congress

JULY 18, 2022

The California Air Resources Board (CARB) has released the results of a multiyear study evaluating exhaust emissions from the use of California Reformulated Gasoline (CaRFG) that contains 15 volume percent ethanol (E15). California currently limits the ethanol content of gasoline to 10 percent. The study used two fuels—an E10 and E15.

Fuel Economy

Fuel Economy Economy Fuel Ozone

HEI launches two new non-tailpipe particulate emission studies

Green Car Congress

JANUARY 8, 2023

Emissions from automobile exhaust systems have decreased in recent years due to the introduction of cleaner fuels and new control technologies on internal combustion engines, as well as increases in numbers of hybrid and electric vehicles.

Emissions

Emissions Pollution Exhaust London

Study: curbing diesel emissions could reduce mortality rates in big cities

Green Car Congress

OCTOBER 1, 2019

Freight transportation is a pillar of the US national economy, but while long-haul trucks account for less than 6% of the vehicle miles traveled over US highways, they account for about 40% of the emissions of air polluting particulate matter and about 55% of nitrogen oxides, the precursor to ozone in the atmosphere, the study said.

Emissions

Emissions Diesel Ozone United States

BASF introduces EvapTrap automotive hydrocarbon trap for LEV III evaporative emissions compliance without backpressure increase

Green Car Congress

JANUARY 15, 2014

This patented technology is applied directly onto the surface of a vehicle’s air intake box to adsorb engine hydrocarbons without increasing backpressure. Traditional solutions involve adding an activated carbon honeycomb or filter to the air intake box to adsorb the hydrocarbons. It is also a tamper-proof solution.

Emissions

Emissions Fuel Economy Ozone Conversion

CRC ACES Phase 2 report finds emissions from modern heavy-duty diesels well below required levels

Green Car Congress

DECEMBER 4, 2013

Emissions of carbon monoxide and hydrocarbons were also significantly below required 2010 levels: 97% and more than 99.9%, respectively. The study, the Phase 2 Report of the comprehensive Advanced Collaborative Emissions Study (ACES). In 2010, EPA’s stringent NO x limit of 0.20 g/hp-hr in 2010. CRC Report: ACES Phase 2.

Diesel

Diesel Emissions 2004 San Antonio

Study finds air quality models significantly underestimate traffic as source of NOx in Europe

Green Car Congress

JUNE 1, 2017

While there have been some doubts about nitrogen oxide emissions for some time, scientists lacked the technology to measure the actual amount of emitted pollutants in a specific area and to determine their overall source strength. We record 36,000 data points per hour. —Thomas Karl. —Karl et al.

Europe

Europe Diesel Emissions Pollution

Why Electric Buses Are the Healthy School Choice

Blink Charging

NOVEMBER 28, 2023

Many school districts use diesel buses for fuel efficiency, but even diesel exhaust was classified as a known carcinogen to humans in 2012. One upcoming technology, Vehicle-to-Grid (V2G or VTG), may allow electric bus fleets to send electricity back to the utility grid during peak energy events.

Fleet

Fleet Electric Electrical United States

Climate Expert: Don't Call It Geoengineering

Cars That Think

NOVEMBER 16, 2021

Everyone solemnly agreed, again, to follow the science, which has shown in exhaustive detail that humanity will suffer from heat, fire, floods, and droughts if the world warms beyond 1.5° Spectrum : When you talk about climate interventions, are you including carbon removal and sequestration in that category? In 2015, the U.S.

Climate

Climate Climate Change Mariner Pollution

OptiFuel finalizing $2.6M DOE grant to demonstrate RNG hybrid line-haul locomotive

Green Car Congress

JULY 24, 2020

This new program, partially funded with the DOE grant, will allow pre-production testing at AAR’s Transportation Technology Center, Inc. TTCI) and will operate in-service with a regional railroad to validate that OptiFuel’s low-risk, affordable technology can also be applied in the higher horsepower freight and passenger locomotive market.

Grant

Grant Hybrid Ozone EPA

Berkeley study identifies diesel as main source of vehicular secondary organic aerosols

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. Earlier post.).

Diesel

Diesel Los Angeles Exhaust Gasoline

Study finds fleet switch from PFI to GDI engines will result in net reduction in global warming

Green Car Congress

MAY 12, 2017

A new study quantifying emissions from a fleet of gasoline direct injection (GDI) engines and port fuel injection (PFI) engines finds that the measured decrease in CO 2 emissions from GDIs is much greater than the potential climate forcing associated with higher black carbon emissions from GDI engines. —Saliba et al.

Fleet

Fleet Engine Global Fuel Economy

Comparative study finds that B20 increases emission rates of a number of pollutants in both light- and medium-duty diesel engines at idle

Green Car Congress

OCTOBER 20, 2012

Panels show (a) PM 2.5 , (b) elemental carbon (EC), (c) NO x , (d) CO, (e) formaldehyde, and (f) sum of target VOCs. They found that the level of emissions of regulated and unregulated pollutants in diesel exhaust depends on fuel, load, engine calibration, and exhaust aftertreatment technology. Emission rates for the 1.7

Pollution

Pollution Diesel Emissions Engine

Study finds climate impact of long distance trip can vary by factor of 10 depending upon mode, efficiency and occupancy

Green Car Congress

JUNE 27, 2013

Among the findings of the study, published in the ACS journal Environmental Science & Technology , is that a car’s fuel efficiency and occupancy are central to whether the impact from a trip is as high as from air travel or as low as from train travel. Environmental Science & Technology doi: 10.1021/es4003718. fuel consumption.

Climate

Climate Diesel Emissions Climate Change

EV Driven

UK researchers report that alcohols in windshield washer fluid are major unreported source of VOCs emissions from cars, including EVs

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

Reducing Black Carbon Emissions and Ground-Level Ozone Would Provide Immediate Benefit Against Climate Change

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

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

EPA proposes approval of new ozone plans for the two of the worst Air Quality Zones in US: California’s San Joaquin Valley and South Coast

CARB releases results of multi-year E15 study; multiple air quality benefits with slight reduction in fuel economy

HEI launches two new non-tailpipe particulate emission studies

Study: curbing diesel emissions could reduce mortality rates in big cities

BASF introduces EvapTrap automotive hydrocarbon trap for LEV III evaporative emissions compliance without backpressure increase

CRC ACES Phase 2 report finds emissions from modern heavy-duty diesels well below required levels

Study finds air quality models significantly underestimate traffic as source of NOx in Europe

Why Electric Buses Are the Healthy School Choice

Climate Expert: Don't Call It Geoengineering

OptiFuel finalizing $2.6M DOE grant to demonstrate RNG hybrid line-haul locomotive

Berkeley study identifies diesel as main source of vehicular secondary organic aerosols

Study finds fleet switch from PFI to GDI engines will result in net reduction in global warming

Comparative study finds that B20 increases emission rates of a number of pollutants in both light- and medium-duty diesel engines at idle

Study finds climate impact of long distance trip can vary by factor of 10 depending upon mode, efficiency and occupancy

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