Exhaust Gas Monitoring Articles

  • Further insights into the composition, source and toxicity of pahs in size‐resolved PM in a megacity in China

    Concentrations of PM10 and PM2.5 and 16 polycyclic aromatic hydrocarbons (PAHs) were measured. The average concentrations of PM10 and PM2.5 reached 209.75 μg/m3 and 141.87 μg/m3; and those of ΣPAHs were 41.46 ng/m3 for PM10 and 36.77 ng/m3 for PM2.5. The mass ratio concentrations were 219.23 μg/g and 311.01 μg/g in PM10 and PM2.5, respectively. Three sources and their contributions for PAHs ...


    By John Wiley & Sons, Ltd.

  • Air quality issues drive vehicle alternatives

    Vehicle exhaust systems remain a major source of air pollution in cities, despite the progress being made to reduce emissions from new models. Energy World takes a look at efficiency improvements, and the alternative fuel alternatives to petrol and diesel. In early April, the south of Britain woke to a hazy blanket of smog. A few weeks earlier, Paris had choked and spluttered through its own ...


    By Energy Institute (EI)

  • Thank You All for the Success of MEXA-7000

    The MEXA-ONE, our new Motor Exhaust Gas Analyzer launched in 2012, has become our core product superseding the MEXA-7000 with a surge in the number of shipments since the beginning of 2014. The MEXA-7000 had evolved continually over the nineteen years since its introduction in 1995 to respond to the significant changes that took place in emission regulations, types of fuel and new technology in ...


    By HORIBA Europe GmbH

  • Combined bio-regeneration and ion-exchange system for perchlorate removal

    In order to prove that perchlorate-laden resins could be bio-regenerated through direct contact with perchlorate-reducing bacteria (PRB), a combined bio-regeneration and ion-exchange (IX) system was operated. Two kinds of perchlorate-laden resins, nitrate-selective A520E and perchlorate-selective A530E, were successfully regenerated by PRB cultivated under anaerobic conditions. The ...


    By IWA Publishing

  • Effect of EGR on performance and emission characteristics of diesel engine at advanced injection timing

    This work attempts to reduce the smoke density of diesel engine by advancing the fuel injection timing and also the NOx emission of the engine by introducing EGR at the advanced injection timing. A single cylinder 4.4 kW air cooled, naturally aspirated, stationary diesel engine was utilised for the investigation. Engine tests were conducted at different loads at standard injection timing and ...


    By Inderscience Publishers

  • Effects of rapeseed oil addition to a diesel fuel on thermodynamic efficiencies

    This paper presents a comparative energy and exergy analyses of a six–cylinder, four–stroke, direct injection diesel engine using diesel fuel and its mixture with rapeseed oil. Engine was used to obtain the experimental data at full–load conditions for constant 2100 rpm speed. It was found that the first– and second–law efficiencies were increased with biodiesel addition. On the other hand, ...


    By Inderscience Publishers

  • Future Cars & Shifting Environmental Burdens

    Ask the average person what they think passenger cars could be like in the future and you are bound to get a wide range of opinions. The more fanciful, looking into the longer term future, might envision an ultra-high-tech world where passenger cars are fitted with “anti-gravity” drives and hover around, powered by nuclear fission perhaps, with zero emissions. But chances are ...


    By thinkstep

  • An experimental investigation of the performance and emissions characteristics of a direct injection compression ignition engine running with LPG

    Existing diesel engines are under stringent emission regulation particularly of smoke and particulate matter in their exhaust. The potential benefits of using liquefied petroleum gas (LPG) as an alternative fuel in diesel engines are both economical and environmental. In the present paper an experimental research was carried out on an I.C. engine laboratory single cylinder, four-stroke variable ...


    By Inderscience Publishers

  • Productivity and efficiency analysis in presence of pollution: a review of non–parametric methods

    During the past 20 years, a rising interest in environmental protection and in the sustainability of production processes has stimulated scientific research to create indicators of efficiency and productivity that is able to consider undesirable outputs. The number of papers written is impressive, as well as the number of proposed techniques. The researchers and practitioners face great ...


    By Inderscience Publishers

  • A three–dimensional CFD approach for prediction of noise reduction of mufflers without mean flow

    A CFD approach, in which the full equations are solved in the time domain, is proposed to calculate noise reduction of a cleaner and a complex exhaust muffler without mean flow. First, two modelling approaches are used to deal with the outlet boundary and to calculate noise reduction of the cleaner without a filter element. The calculated results agree quite well with measurements. Further, the ...


    By Inderscience Publishers

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