Showing results for: vehicle emissions monitoring Articles
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Real-World Vehicle Emissions: A Summary of the 14th Coordinating Research Council On-Road Vehicle Emissions Workshop
The Coordinating Research Council held its 14th Vehicle Emissions Workshop in March 2004, where results of the most recent on-road vehicle emissions research were presented. We summarize ongoing work from researchers who are engaged in improving our understanding of the contribution of mobile sources to ambient air quality andemission inventories. Participants in the workshop discussed efforts to ...
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The EU catches some car manufacturers in a new emissions scandal
Two years after the famous 'Dieselgate', the European Union has found indications that some brands are trying to distort emissions in the most gross way, to avoid new upcoming regulation. In 2020, the European Union will adopt a new regulation that will set new limits on the pollutants emitted by the vehicles. To this end, the EU is collecting data to establish these limits carefully. ...
By Opus RSE
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Real-World Vehicle Emissions: A Summary of the Seventeenth Coordinating Research Council On-Road Vehicle Emissions Workshop
The Coordinating Research Council, Inc. (CRC) held its 17th On-Road Vehicle Emissions Workshop in March 2007, where results of the most recent on-road vehicle emissions research were presented. We summarize ongoing work from researchers who are engaged in improving our understanding of the role and contribution of mobile sources to ambient air quality and emission inventories. Participants in the ...
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Solutions for Automotive Testing
In recent years, the field of research, development and testing of vehicles has created a need for integrated testing systems which cover the entire vehicle including engine and driveline. These systems also need to be capable of being deployed globally in a supportive structure. As a means of responding to these market requirements, building on our strengths in vehicle emissions measurement ...
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Real-world vehicle emissions as measured by in situ analysis of exhaust plumes
Abstract We conducted a 60-day roadside measurement campaign on a busy street in Münster, Germany, during summer 2016. We used gas and particle concentration measurements with high temporal resolution (10 Hz) to quantify both the emission ratios of nitrogen oxides per carbon dioxide (NOx/CO2) for over 70,000 individual exhaust plumes as well as the emission ratios for size-resolved ...
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Role of road side plantation in mitigating vehicular emission: a case study of district Swat, Pakistan
The objective of this study was to know the effectiveness of different tree species used for road side plantation in mitigating air pollution. The road was divided into four zones, i.e., peaches, poplar, eucalyptus, pine rich and treeless zone. The ambient air was monitored periodically over a period of one year with three month intervals. The data was statistically analysed with analysis of ...
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Designing National Commitments to Drive Measurable Emissions Reductions After 2020
In November 2013, Parties to the United Nations Framework Convention on Climate Change (UNFCCC) will meet in Warsaw, Poland to continue negotiations on the new international 2015 climate change agreement. A critical component of this new agreement will be the design of national mitigation commitments that outline countries’ emissions reductions after 2020. This is a complex process, ...
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Congestion charge = better air
With the Government giving the green light for a congestion charge in Manchester, the floodgates have now been opened for the controversial scheme to be adopted around the country. But while there’s a lot of talk about the charge being another tax on drivers already struggling to cope with rising fuel prices, little has been said about the positive impact on the air we breathe. With concern about ...
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High NOx Emissions from Diesel Cars
It is time to sell your diesel car. In a few years you will not be able to use it in a city. The real drive emissions measurements from passenger cars are giving astonishing results. A new diesel car has 10 times higher NOx emissions compared to a petrol car. Even worse, the NOx emitted from the diesel car is up to 50% emitted as NO2. The NOx emitted from a petrol car is only a few % emitted ...
By OPSIS AB
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Position Paper on the European Strategies and Priorities for Railway Noise Abatement
Untitled Document Executive Summary Railway noise can be reduced considerably in the near future The Green Paper Future Noise Policy of November 1996 [11] by the European Commission states that the public's main criticism of rail transport is the excessive noise level. This problem will be exacerbated by the modal shift from road and air ...
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Real Driving Emissions: Meaning and Monitoring
Road traffic is a key contributor to ambient air pollution in many parts of the world today. Throughout the years, different legislative efforts have been made to reduce pollutant emissions, both at national and international levels. One of the recent steps taken, is to introduce limits on emissions when driving in actual traffic, also called Real Driving Emissions, RDE. Accordingly, such ...
By OPSIS AB
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Parametric study of the dispersion aspects in a street-canyon area
Most modern cities practically consist of street canyons, making monitoring of the level of their pollution an important issue. In this study, a Computational Fluid Dynamics (CFD) simulation of pollutant dispersion was performed for a real, complex-geometry street canyon for various wind directions and speeds. Typical street-canyon effects – like the formation of a longitudinal vortex for wind ...
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Real-World Vehicle Emissions: A Summary of the Sixteenth Coordinating Research Council On-Road Vehicle Emissions Workshop
ABSTRACTThe Coordinating Research Council held its 16th workshop in March 2006, with 83 presentations describing the most recent mobile source-related emissions research. In this paper, we summarize the presentations from researchers who are engaged in improving our understanding of the contribution of mobile sources to air quality. Participants in the workshop discussed evaluation of inuse ...
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Automotive Development and Progress in HORIBA`s Emission Measurement Technologies
The progress in HORIBA's emissions measurement systems has been closely connected to trends in vehicle development. Innovations in automotive technology, stemming from emission regulations and implementation of computer control systems, have especially had great influence on analytical technologies. With the advent of emission regulations, HORIBA developed its first automotive emission analyzer, ...
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Comparison of model predictions and measurements near a major road in an urban area
We have compared measured concentration data with predictions from a dispersion modelling system. The measurement campaign was conducted near a major road in the Helsinki Metropolitan area during two months of 1994. The concentrations of five gaseous pollutants (NO, NO2, O3, CO and SO2) were measured at three heights, together with the simultaneous measurement of traffic densities and the ...
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Real-world and type-approval emission evolution of passenger cars
The investigation of several passenger car generations with gasoline engines shows that the emissions depend very strongly on the driving cycle. Official type approval cycles allow just very inaccurate predications about their real-world emissions. The measured gasoline vehicles have up to factor 11 higher real-life emissions than in type approval cycles. However, a clear reduction of real-world ...
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Explaining vehicle emissions – why do laboratory and road measurements differ?
The road transport sector is a major contributor to Europe’s emissions of greenhouse gases and air pollution. For certain pollutants, vehicles can emit substantially higher emissions on the road than official emissions tested in laboratories. A report released today by the European Environment Agency (EEA) provides a non-technical guide that describes the reasons for these often significant ...
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Advantages and challenges of using weather sensors in smart cities
Abstract:Smart cities are becoming a reality across the globe, with technology playing an important role in improving urban living, sustainability and efficiency. One of the areas where smart cities are making significant progress is through the use of weather sensors. These sensors collect real-time weather data, which can then be used to optimize city operations, enhance decision-making, and ...
By JXCT
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Black carbon emissions of individual cars measured under real conditions
Measurements of individual vehicle emissions are usually made in laboratory tests. In this study, researchers followed cars driving in real conditions to measure emissions of air pollutants, including black carbon and nitrogen oxides. The study shows that diesel cars contribute disproportionately to air pollution, and highlights the value of on-road measurements. Vehicle traffic is a major ...
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A closer look at urban transport - TERM 2013: transport indicators tracking progress towards environmental targets in Europe
Transport guarantees our mobility and access to goods. Moreover, the transport sector helps maintain and develop our societal and economic systems. Transport is also a main source of pressures on the environment, such as the unsustainable use of natural resources, as well as greenhouse gas, air pollutant and noise emissions. Many of these environmental problems are inter-linked, requiring ...
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