scholarly journals New method for particulate matter measurement with TEOM diesel particulate mass monitor

2007 ◽  
Vol 130 (3) ◽  
pp. 48-51
Author(s):  
Peter GOLOMB
Keyword(s):  
Particulate Matter ◽  
Vibration Frequency ◽  
New Method ◽  
Diameter Distribution ◽  
Exhaust Gas ◽  
Diesel Particulate ◽  
System A ◽  
Particulate Mass

In the paper the Author pointed out, that the major number of the Particulate Mater in the exhaust gas of engines riches the sizes of less than 0.1 μm. For the better determination of the PM diameter distribution the Horiba enterprise has proposed new metering method of the gravimetric type named TEOM. In the metering system a set of fi lters with different fl ow capacity has been applied. The mass of Particulate Metter hold-up on every filter is being determined by the analysis of the filter vibration frequency. The presented method allows the measurements of the PM-mass with the accuracy of 0.01 mg up to few grams.

Experimental Analysis of Sudden Pressure Increase Phenomenon by Real-Time Internal Observation of Diesel Particulate Filter

2016 ◽  
Vol 138 (10) ◽  
Author(s):  
Rui Fukui ◽  
Yuki Okamoto ◽  
Masayuki Nakao
Keyword(s):  
Particulate Matter ◽  
Pressure Drop ◽  
Diesel Particulate Filter ◽  
Operating Conditions ◽  
Particulate Filter ◽  
Exhaust Gas ◽  
Visualization Method ◽  
Diesel Particulate ◽  
Wide Perspective ◽  
Deposit Layer

As a way of reducing the amount of particulate matter (PM) contained in the exhaust gas, diesel particulate filter (DPF) is widely used. To keep the condition of DPF normal and effective, estimation of the amount of PM deposits in the DPF is important. The estimation is mainly conducted based on the value of pressure drop across the DPF. Occasionally, the value of the pressure drop rises suddenly and it leads to overestimation of the amount of PM deposits. In order to elucidate the cause of the sudden pressure drop increase phenomenon, this paper first reveals the engine operating conditions which invoke this phenomenon. The authors also have developed a visualization method to realize the wide-perspective internal observation of the DPF. The observation experiment has been conducted with a commercial engine and DPF under the revealed conditions. Experimental results make clear that the phenomenon is caused by PM deposit layer collapse and channel plugging.

A new method for the simultaneous determination of PAH and metals in samples of atmospheric particulate matter

2003 ◽  
Vol 37 (29) ◽  
pp. 4171-4175 ◽  
Author(s):  
M Piñeiro-Iglesias ◽  
P López-Mahı́a ◽  
S Muniategui-Lorenzo ◽  
D Prada-Rodrı́guez ◽  
X Querol ◽  
...  
Keyword(s):  
Particulate Matter ◽  
Simultaneous Determination ◽  
Atmospheric Particulate Matter ◽  
New Method ◽  
Atmospheric Particulate

scholarly journals Atmospheric Pressure Plasma for Diesel Particulate Matter Treatment: A Review

Catalysts ◽  
2020 ◽  
Vol 11 (1) ◽  
pp. 29
Author(s):  
Xiurong Guo ◽  
Khanh Hop Ha ◽  
Danfeng Du
Keyword(s):  
Particulate Matter ◽  
Nitrogen Oxides ◽  
Diesel Exhaust ◽  
Atmospheric Pressure ◽  
Atmospheric Pressure Plasma ◽  
Diesel Particulate Matter ◽  
Exhaust Gas ◽  
Diesel Particulate ◽  
Pressure Plasma ◽  
Non Thermal Plasma

The purification of diesel exhaust gas is of great importance to prevent the atmospheric emission of major pollutants such as diesel particulate matter and nitrogen oxides and meet the environmental regulations. The atmospheric-pressure plasma is attracting increasing interest and is a promising after-treatment technology for purifying diesel emission at low temperatures. However, when compared with the numerous publications on nitrogen oxides reduction by non-thermal plasma, using non-thermal plasma to particulate matter treatment have relatively limited. This work provides a comprehensive review of the plasma applications for diesel particulate matter treatment, including self-regenerating diesel particulate filter, diesel particulate matter removal, and simultaneous removal of diesel particulate matter and nitrogen oxides. The treatment of particulate matter from both simulated particulate matter sources and actual diesel engines also discussed in this comprehensive review. The challenge to this technology is limited energy consumption for plasma, which should be less than 5% (~30 J/L) of the overall fuel consumption. Until now, the atmospheric-pressure plasma has been no commercial implementation in diesel exhaust gas treatment, so more research is needed to be done in this field.

Development of Radio Frequency Sensing for In-Situ Diesel Particulate Filter State Monitoring and Aftertreatment System Control

2013 ◽  
Author(s):  
Alexander Sappok ◽  
Leslie Bromberg
Keyword(s):  
Particulate Matter ◽  
The United States ◽  
Particulate Filter ◽  
Widespread Application ◽  
Diesel Particulate ◽  
Aftertreatment System ◽  
Particulate Filters ◽  
Filter Loading

Diesel particulate filters (DPF) have seen widespread application in the United States and Europe to meet stringent diesel particulate matter (PM) emissions regulations. Now commonplace on most on-road diesel vehicles, DPFs are being increasingly applied to diesel-powered off-road equipment as additional regulations are phased in. Further, recent awareness of particulate matter emissions from gasoline direct injection engines has motivated additional study into potential applications of gasoline particulate filters (GPF). Key to the efficient operation of the combined engine and emissions aftertreatment system, is the accurate determination of the filter loading state, to enable precise control of filter regeneration and on-board diagnostics. Currently pressure- and model-based controls are utilized, in parallel, to provide an indirect estimate of filter loading. This work presents results of an investigation applying radio frequencies (RF) to monitor the accumulation of particulate matter in the DPF, providing a direct, in-situ determination of filter loading state. Simulation results, supported by experimental measurements, are provided to demonstrate the utility of the technique to monitor not only the filter loading state but also to provide a measure of the spatial distribution of the accumulated material. The results of this work indicate significant potential to apply RF-based sensing for improved monitoring and control of the particulate filter in a range of applications.

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