Concept for Diesel Particulate Filter monitoring based on BOSCH Particulate Matter Sensor (PMS)

2016 ◽  
pp. 1595-1603
Author(s):  
Jörg Linke ◽  
D. Konrad
Keyword(s):  
Particulate Matter ◽  
Diesel Particulate Filter ◽  
Particulate Filter ◽  
Diesel Particulate

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.

scholarly journals Detailed effects of a diesel particulate filter on the reduction of chemical species emissions

2016 ◽  
Author(s):  
Devin R. Berg
Keyword(s):  
Particulate Matter ◽  
Diesel Particulate Filter ◽  
Wide Spectrum ◽  
Chemical Species ◽  
Inorganic Ions ◽  
Particulate Filter ◽  
Diesel Particulate ◽  
Particulate Filters ◽  
Metallic Compounds ◽  
Heavy Duty Diesel

Diesel particulate filters are designed to reduce themass emissions of diesel particulate matter and havebeen proven to be effective in this respect. Not much isknown, however, about their effects on otherunregulated chemical species. This study utilized sourcedilution sampling techniques to evaluate the effects of acatalyzed diesel particulate filter on a wide spectrum ofchemical emissions from a heavy-duty diesel engine.The species analyzed included both criteria andunregulated compounds such as particulate matter(PM), carbon monoxide (CO), hydrocarbons (HC),inorganic ions, trace metallic compounds, elemental andorganic carbon (EC and OC), polycyclic aromatichydrocarbons (PAHs), and other organic compounds.Results showed a significant reduction for the emissionsof PM mass, CO, HC, metals, EC, OC, and PAHs.

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