scholarly journals On-Board Engine Exhaust Particulate Matter Sensor for HCCI and Conventional Diesel Engines

2011 ◽  
Author(s):  
Matt Hall ◽  
Ron Matthews
Keyword(s):  
Particulate Matter ◽  
Diesel Engines ◽  
Engine Exhaust ◽  
Exhaust Particulate

Development of a Soot Load Sensor Using Electrical Capacitance Imaging

2015 ◽  
Vol 137 (11) ◽  
Author(s):  
Ragibul Huq ◽  
Sohel Anwar
Keyword(s):  
Particulate Matter ◽  
Diesel Engines ◽  
Fuel Efficiency ◽  
Exhaust System ◽  
Particulate Filter ◽  
Electrical Capacitance ◽  
Engine Exhaust ◽  
Efficient Operation ◽  
The Status ◽  
Exhaust After Treatment

This paper presents an innovative approach for measuring particulate matter deposition (soot load) in a diesel particulate filter (DPF) using electrical capacitance imaging. Emission regulations on diesel engines for gaseous as well as particulate matter (soot) emissions are getting stringent every few years by the environment regulatory agencies. Modern diesel engines are equipped with DPFs, as well as on-board technologies to evaluate the status of DPF, because complete knowledge of DPF soot load is very critical for robust and efficient operation of the engine exhaust after treatment system. In course of time, soot will be deposited inside the DPF which will clog the filter and generate a back pressure in the exhaust system, negatively impacting the fuel efficiency. To remove the soot build-up, regeneration (active or passive) of the DPF must be done as an engine exhaust after treatment process periodically. Since the regeneration process consumes fuel, a robust and efficient operation based on accurate knowledge of the soot load becomes essential in order to keep the fuel consumption at a minimum. In this paper, we propose a novel sensing method for a DPF that can measure in situ soot load using electrical capacitance imaging. Experimental results show that the proposed method offers an effective way to measure the soot load in DPF. The proposed method is expected to have a profound impact in improving overall DPF filtering efficiency and durability of a DPF through appropriate closed-loop regeneration operation.

scholarly journals Assessment of Environmental Risks of Particulate Matter Emissions from Road Transport Based on the Emission Inventory

2021 ◽  
Vol 11 (13) ◽  
pp. 6123
Author(s):  
Katarzyna Bebkiewicz ◽  
Zdzisław Chłopek ◽  
Hubert Sar ◽  
Krystian Szczepański ◽  
Magdalena Zimakowska-Laskowska
Keyword(s):  
Particulate Matter ◽  
Legal Status ◽  
Monitoring And Evaluation ◽  
Road Transport ◽  
Solid Particles ◽  
Pollutant Emissions ◽  
European Economic Area ◽  
Engine Exhaust ◽  
Exhaust Gases ◽  
Particulate Matter Emissions

The aim of this study is to investigate the environmental hazards posed by solid particles resulting from road transport. To achieve this, a methodology used to inventory pollutant emissions was used in accordance with the recommendations of the EMEP/EEA (European Monitoring and Evaluation Programme/European Economic Area). This paper classifies particulates derived from road transport with reference to their properties and sources of origin. The legal status of environmental protection against particulate matter is presented. The emissions of particulate matter with different properties from different road transport sources is examined based on the results of Poland’s inventory of pollutant emissions in the year 2018. This study was performed using areas with characteristic traffic conditions: inside and outside cities, as well as on highways and expressways. The effects of vehicles were classified according to Euro emissions standards into the categories relating to the emissions of different particulate matter types. The results obtained showed that technological progress in the automobile sector has largely contributed to a reduction in particulate matter emissions associated with engine exhaust gases, and that this has had slight effect on particulate matter emissions associated with the tribological processes of vehicles. The conclusion formed is that it is advisable to undertake work towards the control and reduction of road transport particulate matter emissions associated with the sources other than engine exhaust gases.

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