3 edition of Analysis of real-time vehicle hydrocarbon emissions data found in the catalog.
Analysis of real-time vehicle hydrocarbon emissions data
by U.S. Environmental Protection Agency, Air and Energy Research Laboratory, National Technical Information Service in Research Triangle Park, NC, [Springfield, VA
Written in English
|Other titles||Analysis of real time vehicle hydrocarbon emissions data|
|Statement||J. Philip Childress and James H. Wilson, Jr.|
|Contributions||Wilson, James H., Air and Energy Engineering Research Laboratory.|
|The Physical Object|
Emission factors of carbonaceous particles, including black carbon (BC) and organic carbon (OC), and polycyclic aromatic hydrocarbons (PAHs) were determined for five coals, which ranged in maturity from sub-bituminous to anthracite. They were burned in the form of honeycomb briquettes in a residential coalstove, one of the most common fuel/stove combinations in China. Therefore, the reactivity of hydrocarbons, in addition to the quantity, is an important variable in any study of vehicular hydrocarbon emission. This study was made to determine the effects of combustion and fuel variables on the relative amount and reactivity of vehicular exhaust and vented hydrocarbon by: 5.
Both the (b) warranty emissions test for hydrocarbons (HC) and carbon monoxide (CO), and the Heavy-Duty idle emission test for CO are expected to be conducted on in-use vehicles with data generated mostly by state-run I/M programs. Whether for R&D, regulatory preparation or benchmarking, our customers turn to us for unrivalled expertise in the application of Portable Emissions Measuring Systems (PEMS). We measure fuel economy, gaseous emissions and particulates, mass & number. Intervention – before and after testing for products, such as additives.
The pie charts below illustrate the contribution of each source category to the total daily VOC and NOx emissions in New England. These charts were created using information from the emissions inventories submitted by each state in New England. The residential sector and the commercial sector have lower CO2 emissions levels than the transportation sector and the industrial sector. Most of the CO2 emissions associated with energy use by the residential and commercial sectors can be attributed to fossil fuel combustion by the electric power sector to produce the electricity that it sells to the .
Revision of the species currently referred to Alepocephalus, Halisauriceps, Bathytroctes and Bajacalifornia, with introduction of two new genera
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United States Environmental Protection Agency Air and Energy Engineering Research Laboratory Research Triangle Park, NC Research and Development «rEPA Project Summary EPA//SR/ July Analysis of Real-time Vehicle Hydrocarbon Emissions Data J.
Philip Childress and James H. Wilson, Jr. Analyses using real-time. The report gives results of analyses using real-time dynamometer test emissions data from 13 passenger cars to examine variations in emissions during different speeds or modes of travel.
The resulting data provided a way to separately identify idle, cruise, acceleration, and deceleration emissions for examining how emissions differ by vehicle speed during cruise. This study presents the characteristics of real world, real time, on-road vehicular exhaust emission namely, carbon monoxide (CO), nitric oxide (NO), hydrocarbons (HC), and carbon dioxide (CO 2) emitted under heterogeneous traffic conditions.
Field experiments were performed on major category of vehicles in developing countries, i.e. two-wheelers, auto Cited by: Vehicle Hydrocarbons’ Emission Characteristics Determined Using the Monte Carlo Method dynamometer EMDY 48 (Schenck-K omeg, one roller of 48 diameter) [ 50 ], and HC emission—using exhaust.
21 st e Slide 2 Walker, C. and Tawfik, A. Vehicle Emissions and Life Cycle Analysis Models April, Presentation Outline Project Background Emissions Data Collection Gasoline Models Macro, Meso, Micro Electric Models MOVES and EMFAC Life-Cycle Models.
The data show that even though the number of older cars is small, their HNO 2 emission levels are so high that they may be the major source of all gaseous HNO 2 from automotive emissions. HNO 2 is a key precursor to photochemical air pollution and is also an inhalable nitrite.
Review and Analysis of Emissions Test Reports gas production sites and proposing a new total hydrocarbons (THC) emissions factor for enclosed ground flares at natural gas production sites. Additionally, the EPA is proposing two ground flares there are available THC emissions data from both field-tested and manufacturer.
This table lists public, online sources of fuel efficiency and CO 2 emission data, collected and published by regulatory agencies, for vehicles sold or registered under their jurisdiction. If you know of an official source of fuel economy data that is not listed here but should be, please contact Zifei Yang.
data relevance, allowing you to get the information you need: real-time results that portray the correct data for statistical analysis. A test cell is an isolated and controlled room in which you can safely analyze and record the properties of a combustion engine. For emissions tests, an engine is usually mounted on a cart in the center of the File Size: KB.
• to estimate the difference between true emission values and values determined by means of the above mentioned methods, in particular that specified in Regulation ; • to propose changes to Regulation with regard to the measurement method of hydrocarbons emission.
This paper discusses two factors governing the HC emission: •File Size: KB. Research Program (NCHRP) vehicle emissions database, which consists of data relative to chassis dynamometer tests conducted at the College of Environmental Research and Technology, University of California at Riverside, between and The NCHRP database was used in the development of CMEM and of other emission models in the literature.
Current situation of polycyclic aromatic hydrocarbons (PAH) in PM in a receptor site in Mexico City and estimation of carcinogenic PAH by combining non-real-time and real-time measurement techniques.
Science of The Total Environment, DOI: /env The pyrolysis plant consists of three chambers; the primary chamber, the secondary chamber and the conversion chamber, as shown in Fig. feedstock is cut into small pieces (1–2 cm 2) and then is transferred to the primary chamber through a the primary and secondary chambers the plastics are purged with carbon dioxide to ensure that no oxygen is transferred Cited by: Hydrocarbons (HCs) are products of incomplete combustion process which can occur during operation of the internal combustion engines (Flagan and Seinfeld ; Wallington et al.
Meteorologische Zeitschrift, 17(2), –, ). Incomplete combustion process affects the fuel consumption and engine performance (Baskar and Senthilkumar Engineering Science Cited by: 1.
Real-time vehicle emissions monitoring using a compact LiDAR system and conventional instruments: first results of an experimental campaign in a suburban area in southern Italy Real-time vehicle.
Analysis of real-time vehicle hydrocarbon emissions data: project summary Author: J Philip Childress ; James H Wilson ; Air and Energy Engineering Research Laboratory. Data collection, quality assurance, reduction, and analysis protocols were developed.
Field data collection occurred in a pilot and an evaluation phase. In total, over 1, one-way trips were made with more than 20 vehicles, 4, vehicle-miles traveled, hours of data Cited by: Publications “Defeat-device detection and enforcement is a critical component of ensuring low real-world vehicle emissions.
Issuing improved guidance is necessary for enforcing defeat-device provisions, but rigorous enforcement testing is still needed to determine whether manufacturers are complying with the guidance.
Analysis of Driving Parameters and Emissions for Real World Urban Driving Cycles using an on-board Measurement Method for a EURO 2 SI car A FTIR in-vehicle on-road emission measurement system was installed in a EURO 2 emissions compliant SI car to investigate exhaust emissions under different urban traffic by: 9.
The procedure testers will follow to check vehicle exhaust emissions during the MOT test, and vehicle examiners follow to check emissions at the roadside. Published 20 August Last updated 1 Author: Driver And Vehicle Standards Agency.
Analyzing on-road emissions of light-duty vehicles with Portable Emission Martin Weiss, Pierre Bonnel, Rudolf Hummel, Urbano Manfredi, The approach yields reproducible and comparable emissions data and (total hydrocarbon) emissions of both diesel and gasoline vehicles generally stay within Euro emission limits.
TheFile Size: 2MB.The relationship between gasoline composition and vehicle hydrocarbon emissions: a review of current studies and future research needs.
it was necessary to develop advanced analytical methods for the qualitative and quantitative analysis of hydrocarbons in fuels and vehicle emissions. The development of real-time techniques such as Fourier Cited by: In the US motor vehicle emission controls of hydrocarbons and NO have been the backbone of ozone control strategies, beginning fi&t in California in the s, then becoming increasingly more stringent as technology was developed.
Vehicle hydrocarbon emissions have been second most important for hydrocarbon.