Applicability of the Pegasor Particle Sensor to Measure Particle Number, Mass and PM Emissions

Amanatidis, Stavros; Ntziachristos, Leónidas; Samaras, Zissis; Janka, K.; Tikkanen, Juha

doi:10.4271/2013-24-0167

Cited by 20 publications

(12 citation statements)

References 10 publications

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“…Figure 1 shows the correlation to be quite good between PN PEMS and the PMP (particle measurement protocol) over a range of PN emissions [8]. Others have shown excellent correlation between PEMS and laboratory equipment for measuring PN in a variety of exhaust streams [9]. As a back-up plan in case PN PEMS is not satisfactory, the Commission is also developing a random drive cycle methodology that can be conducted in a dynamometer laboratory.…”

Section: Europe Rde Regulatory Developmentsmentioning

confidence: 97%

Vehicular Emissions in Review

Johnson¹

2014

SAE Int. J. Engines

138

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The review paper summarizes major developments in vehicular emissions regulations and technologies in 2013. First, the paper covers the key regulatory developments in the field, including proposed light-duty (LD) criteria pollutant tightening in the US; and in Europe, the continuing developments towards real-world driving emissions (RDE) standards. Significant shifts are occurring in China and India in addressing their severe air quality problems. The paper then gives a brief, high-level overview of key developments in fuels. Projections are that we are in the early stages of oil supply stability, which could stabilize fuel prices. LD and HD (heavy-duty) engine technology continues showing marked improvements in engine efficiency. Key developments are summarized for gasoline and diesel engines to meet both the emerging NOx and GHG regulations. HD engines are or will soon be demonstrating 50% brake thermal efficiency using common approaches. NOx control technologies are then summarized, including SCR (selective catalytic reduction) systems and SCR filter developments. Emphasis is on low-temperature deNOx and integration of components and control. Diesel PM (particulate matter) reduction technologies are evolving around the behavior of ash deposits and SCR integration. Filters for direct injection gasoline applications are developing very rapidly, and in some cases the back pressure, light-off characteristics, and emissions reductions are very similar to standard three way catalysts (TWCs). Oxidation catalysts mainly involve developments towards stubborn problems, like low-temperature performance with exhaust with high hydrocarbon and CO, and methane oxidation. Finally, the paper discusses some key developments in gasoline gaseous emission control, focusing on matching engine calibration with emissions system characteristics; and on lean burn gasoline emissions control.

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Section: Europe Rde Regulatory Developmentsmentioning

confidence: 97%

Vehicular Emissions in Review

Johnson¹

2014

SAE Int. J. Engines

138

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“…where S is the section area of exhaust pipe and u is the exhaust flow rate. (10) and (11), the flow rate of the gas in the engine tail pipe can be calculated by Equation (12).…”

Section: Boundary Conditionmentioning

confidence: 99%

“…Picasso in Finland proposed the charging current difference PM sensor, where corona charger is put in the sensor Faraday cup. The current difference before and after charging the Faraday Cup is acquired by the electrometer in the sensor, which can imply the PM concentration [9,10].…”

Section: Introductionmentioning

confidence: 99%

The Simulation on Temperature and Thermal Stress of Leakage Current Particulate Matter Sensor on Diesel Engine

et al. 2019

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Based on the working environment and control strategy of the leakage current particulate sensor on the diesel engine, the ANSYS finite element simulation is applied to prove the reliability of the sensor in the response phase. It shows that the full load conditions of the diesel engine harsh the exhaust environment, which leads to higher thermal stress in the sensor. The temperature of the front end of the sensor base is up to 227°C, and the highest thermal stress appearing in the sensor is 88 MPa. Both of them are lower than the upper limit request, which guarantees the working reliability of the sensor in long period. The effect of outside environment on the highest temperature of the sensor base is also investigated, and it shows that the lower temperature and the higher convective heat transfer coefficient would be in favor of the reliable work of the sensor. In addition, it shows that the cold start time of the sensor is reducing exponentially with the increasing heating power, and the optimum heating power is 60 W taking the linearly increasing thermal stress into consideration.

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“…The best known available devices are the AVL Opacimeter, Micro Soot Sensor, Smoke Meter 7 and Pegasor Particle Sensor. 8…”

Section: Introductionmentioning

confidence: 99%

Real time soot models for production CI engines based on pressure trace information

Zhang

Waschl

Fuerhapter

et al. 2016

International Journal of Engine Research

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Better knowledge of the instantaneous soot and nitrogen oxides (NOx) emissions in Diesel engines would allow better choices of injection parameters and thus lead to better raw emissions than, for instance, with classical averaged measures, like smoke maps. Unfortunately, while for most regulated emissions fast measurements are possible and reasonably fast sensors are available, the same is not true for soot. Against this background, this paper proposes a real time, delay-free soot model based on the pressure trace information. The model essentially maps changes of the pressure trace into changes of the raw soot emissions. The key elements of the approach are the design of experiments, segmentation of the pressure trace and the use of the principal component analysis technique to extract the essential information. The model is based only on data; that is, it needs an initial calibration with working points measured with a standard device, such as an AVL Microsoot or Opacimeter. This paper describes the method and then shows validation results with an additional amount of pilot injection in one cylinder which confirms the delay-free soot estimation.

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Applicability of the Pegasor Particle Sensor to Measure Particle Number, Mass and PM Emissions

Cited by 20 publications

References 10 publications

Vehicular Emissions in Review

Vehicular Emissions in Review

The Simulation on Temperature and Thermal Stress of Leakage Current Particulate Matter Sensor on Diesel Engine

Real time soot models for production CI engines based on pressure trace information

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