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A study by researchers at the University of Texas found that in general, use of plug-in hybrid electric vehicles (PHEVs) can lead to an increase in ozone during nighttime hours (due to decreased scavenging from both vehicles and EGU stacks) and a decrease in ozone during daytime hours.
Mineta San José International Airport’s (SJC) has deployed a fleet of 10 Proterra battery-electric buses that will transport passengers and their luggage between SJC’s parking lots, rental car center, and terminals. The electric bus fleet is anticipated to reduce ozone emissions by 1.1
EPA’s TAG program aims to reduce air pollution in areas of the nation with the highest levels of ambient ozone and fine particulate matter (PM 2.5 ) pollution.
Denver represents an interesting case study for exploring potential PHEV impacts because it violates the federal air quality standard for ozone and because several large EGUs [electricity generating units] are located in or near the urbanized area. Ozone concentration increases were modeled for small areas near central Denver.
The proposed multi-pollutant rule would further reduce air pollution from heavy-duty engines and vehicles across the United States, including ozone and particulate matter (PM). In 2045, the proposed Option 1 would result in total annual monetized ozone- and PM 2.5 Proposed Option 2 would reduce heavy-duty NO x emissions in 2045 by 47%.
The global market for rocket launches may require more stringent regulation in order to prevent significant damage to Earth’s stratospheric ozone layer in the decades to come, according to a new study by researchers in California and Colorado. Darin Toohey.
BASF announced the commercial launch of PremAir NXT, a next-generation direct ozone reduction (DOR) catalytic coating technology for heat exchange surfaces such as radiators that can help automakers meet new US Tier 3 and California LEV III emissions reduction requirements. it converts ground-level ozone already in the air.
Emissions from heavy-duty vehicles are primarily under the regulatory jurisdiction of state and federal government, and voluntary incentive programs are critical to transitioning fleets to the next generation of cleaner technologies and achieving reductions needed to meet air quality standards. standards.
Later years should show additional improvements as greater fleet turnover occurs. The modeled 2028 base year 8-hour ozone design values were found to be above the 70 ppb NAAQS for 75 monitoring locations. Metropolitan areas and highway corridors will see the greatest reduction in ozone due to the strategy, with reductions of up to 6.5
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.
VOCs, primarily emitted from the tailpipes of vehicles, are a key ingredient in the formation of ground-level ozone which, at high levels, can harm people’s lungs and damage crops and other plants. —lead author Carsten Warneke, Ph.D., Warneke, C., de Gouw, J. Holloway, J. Peischl, T. Ryerson, E. Trainer, and D.
It requires anyone who owns, operates, charters, rents or leases any US or foreign-flagged container, passenger or refrigerated-cargo vessel that visits a California port to meet the operational time limits and reduce their power generation fleet-wide, as well as submit statements of compliance.
The new CNG fleet will replace older diesel-powered trucks. One of the more lasting contributions we can make in our community is to protect the environment by reducing ozone-forming emissions wherever possible. Three out of every four trucks in our local fleet will be powered by natural gas by the end of this calendar year.
A fleet average nonfuel nonexhaust VOC emission factor of 58 ± 39 mg veh –1 km –1 was calculated for the missing source, which is greater than the total of all VOCs emitted from vehicle exhausts and their associated evaporative fuel losses. —Cliff et al. the products used for “car care,” such as windshield washer fluid.
The main purpose of the LoNo Program is to deploy the cleanest and most energy efficient US-made transit buses that have been largely proven in testing and demonstrations but are not yet widely deployed in transit fleets. A maintenance area, as defined in section 5303, for ozone or carbon monoxide. 7407(d)); or.
The new CNG fleet will replace older diesel powered trucks. Republic operates a fleet of more than 1,400 CNG vehicles and 26 natural gas fueling stations nationwide. Republic installed a natural gas fueling station to support its new fleet of CNG powered trucks in the Twin Cities.
The California Air Resources Board (CARB) voted to approve an updated plan for the South Coast Air Basin aimed at further cutting smog-forming emissions to attain the federal 8-hour ozone standard. The plan also includes current efforts to transform California’s vehicle fleet to zero-emission. —CARB Chair Mary D.
According to a newly-published discussion paper, the primary objective of the proposed standards is to require fleet average SULEV-level emissions performance (similar to the Federal Tier 2 Bin 2 standard) from new vehicles by model year 2022. LEV III—for new passenger vehicles, to be considered by the Board later this year.
In addition, other studies have shown that increases in PM 2.5 , NO 2 , and ozone were associated with lower test scores that were “equivalent to the effects of short-term reductions of thousands of dollars in district median household income.” View the Case Study How much funding is available for EV charging at school districts?
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.
The US Environmental Protection Agency (EPA) has designated the five-county Philadelphia region of Bucks, Delaware, Chester, Montgomery and Philadelphia counties as non-attainment for ozone and fine particulate matter air quality standards. Berks, Lehigh and Northampton counties recently achieved attainment status for federal ozone standards.
The rail sector is the only transportation modality without significant emissions related development that is feasible in the near-term to eliminate ozone, smog and GHG emissions, OptiFuel says. Beside the US locomotive fleet average NNO x Ox emissions of 8 g/bhp-hr, the US rail fleet’s average fine Particulate Matter (PM) emissions is 0.22
As part of a US Department of Energy sponsored effort, local fleets will replace existing diesel delivery vehicles with all-electric medium- and heavy-duty Smith Newton trucks for daily operations in the Houston-Galveston area. Its service area is 12,500 square miles and contains more than 6 million people.
Achieving our long-term climate goal and 2032 ozone standards will require a much deeper penetration of ZEVs into the fleet. Deployment of fuel efficient vehicle tires for in-use vehicles could include limited incentives, followed by ratings and then standard setting to permanently shift the market.
EPA expects that any update to the standards will result in significant mobile source NO x reductions, which will aid communities across the country in the attainment of ozone and particulate matter standards. The US has made major reductions in NO x emissions, but it’s been nearly 20 years since EPA updated these standards.
The first is the Vehicle Technologies Office (VTO), which aims to advance combustion engine technology and simultaneously reduce criteria emissions, such as carbon monoxide, nitrogen oxides and ozone. Adapting existing fleets is a compelling issue for rail. Locomotives have extremely long service lives.
The results, published in an open-access paper in the journal Science , suggest that the focus of efforts to mitigate ozone formation and toxic chemical burdens need to be adjusted, the authors suggested. Total VOC emission factors for end uses of petrochemical sources in the study. 1A) and sales data of volatile chemical products.
Mary Fallin joined 14 other states to sign a multi-state Memorandum of Understanding committing to the purchase of NGVs for each State’s fleet and encouraging the development of more functional and affordable CNG vehicles. In 2011, Hickenlooper and Oklahoma Gov.
Compared to the 2010 “Business as Usual” scenario—which includes all adopted emission control measures for the South Coast—NO x levels must be reduced by 65% and by 75% to meet the 2023 and 2032 ozone standards, respectively. It would provide greater long-term market choices for fleet owners.
systems in areas classified “Serious,” “Severe,” or “Extreme” for nonattainment of the ozone national ambient air quality standard (NAAQS). Vapor emissions from refueling, if allowed to escape, can contribute significantly to ground-level ozone, sometimes called smog, as well as to other types of harmful air pollution.
The twenty light-duty gasoline vehicles included a mixture of technologies, such as gasoline direct injection (GDI), port fuel injection (PFI) as well as PFI+GDI fuel systems that are representative of the current California gasoline fleet. The test fleet showed statistically significant effects for some pollutants, but not for others.
A single proposal may target multiple fleets, fleet types and/or diesel emission reduction solutions. million tons of NO x , which contribute to the formation of ozone and additional fine particles. Nationwide, in 2009 diesel emission from mobile sources alone will account for approximately 300,000 tons of directly emitted PM 2.5
Workplace, fleet and multi-unit dwelling projects will be given priority. $5 County of Santa Clara will received $300,000 to purchase and install a publicly accessible compressed natural gas (CNG) fueling station at a county fleet management facility in San Jose. 4 million to emerging opportunities.
The study found that 60% of the winter primary hydrocarbon hydroxyl radical reactivity in London is from those diesel-related hydrocarbons; the authors predicted that the longer-chain HCs contribute up to 50 % of the ozone production potential in London. —Dunmore et al.
A new report prepared by the World Bank at the request of the G8 identifies ways that the World Bank can do more through its projects to reduce the emission of short-lived climate pollutants (SLCPs): black carbon, methane, tropospheric ozone, and fluorinated gases known as HFCs.
Hence, in contrast to the situation for NMHC, ethanol, acetaldehyde, and CH 4 , it is not possible to make general statements regarding the effect of fuel ethanol content on tailpipe emissions of NO x , THC, and NMOG for the current or future FFV fleet based on testing of a small number of existing vehicle models. —Hubbard et al.
In the new study, Horton, Peters and their team looked at vehicle fleet and emissions data from 2014. Although the impact of carbon emissions on the climate is well documented, combustion engines also produce other harmful pollutants, such as particulate matter and the precursors to ground-level ozone.
Continued actions to set more stringent standards, coupled with programs to increase the penetration of those technologies into the fleet will reduce NO x emissions from passenger vehicles and trucks by 85% from today’s levels in the South Coast. emissions by more than 20%. emissions by more than 20%.
NO x emissions are known to be harmful to human health and to the environment, contributing to regional ozone attainment challenges, smog and other air-quality issues. The certification of this ultra-clean propane engine could not have come at a more opportune time as private and public fleets can now begin applying for a piece of the $2.9
The program is geared to help small California-based fleets replace their older, polluting trucks with newer, cleaner models. California is currently working toward meeting clean-air standards for ozone and particulate matter emissions.
Volkswagen said it would roll out CO 2 MAC systems progressively over its entire vehicle fleet. R134a replaced CFC-12 as the MAC refrigerant in the early 1990s due to the negative impact of CFCs on the Earth’s ozone layer. Earlier post.). With a GWP (Global Warming Potential) value of 1, R744 is 99.3%
The proposed regulation provides medium- and heavy-duty truck manufacturers with several compliance options and would require a one-time reporting from applicable truck fleets. million registered vehicles. million registered vehicles.
Regulations, improved fuel efficiency of the state’s vehicle fleet, and higher market penetration of zero-emission vehicles drive down emissions over time; but population growth, lower fuel prices, more consumer and economic activity, and higher overall employment are factors that increase fuel use. MMTCO 2 e (6%) from 2013 to 2017.
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