The impact of voltage and flow on the electrostatic soot sensor and the implications for its use as a diesel particulate filter monitor

Maricq, M. Matti; Bilby, David

doi:10.1016/j.jaerosci.2018.07.002

Cited by 22 publications

(18 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The value of the leakage current changes with the change of particle mass concentration in the exhaust gas. The concentration of exhaust particles can be obtained by collecting the leakage current generated by particle movement between electrodes [14,15].…”

Section: Introductionmentioning

confidence: 99%

Simulation and Experimental Research on the Charged Characteristics of Particulate Matter in the Sensor under Different Exhaust States

Tang

Wang

2020

Sensors

View full text Add to dashboard Cite

The particulate matter sensor needs to be used in order to detect the concentration of particulate matter in diesel engine exhaust, monitor the working condition of diesel particulate filter (DPF) in real time, and ensure the reliable operation of DPF. The flow field and electric field of the sensor are studied and their distribution in the sensor is analyzed. At the same time, the particle tracking model was used to simulate the charged characteristics of particles in the sensor under different exhaust states. It is found that the exhaust gas flow rate maintains stability after entering the outer protection zone and concentration test zone. The electric field is a non-uniform electric field and the direction of electric field intensity is from the high voltage electrode to the grounding electrode. The electric charge per particle will decrease with the increase of exhaust flow rate, but the electric charge shows a slow growth trend. The charge of particles increases with the increase of exhaust temperature, exhaust gas concentration and particle size. The study of the charged characteristics under different environmental conditions provides a theoretical basis for further improving the prototype mechanism of a leakage flow particle sensor.

show abstract

Section: Introductionmentioning

confidence: 99%

Simulation and Experimental Research on the Charged Characteristics of Particulate Matter in the Sensor under Different Exhaust States

Tang

Wang

2020

Sensors

View full text Add to dashboard Cite

show abstract

“…They react with haemoglobin and modify the iron in haemoglobin from Fe 2+ to Fe 3+ and thus create a haemoglobin modification -methaemoglobin, which is stable and unable to bind oxygen. In large concentrations they react with moisture in lungs and create nitric acid and nitrous acid which cause acute respiratory disease [18]. Nitrogen oxides aggravate:…”

Section: Carbon Dioxide Co2mentioning

confidence: 99%

Comparison of emissions depending on the type of vehicle engine

Rievaj

Gaňa

Synák

2019

Logistics &Amp; Sustainable Transport

View full text Add to dashboard Cite

Road transport is showing growth in the period of globalization. Its task is to transport cargo as well as people to the required location within the shortest possible time and at the lowest price. Thus, road transport plays a crucial role in enabling the globalization to be developed and improved. However, the internal combustion engine hat prevail among the vehicles of freight and passenger transport are the producers of gaseous emissions from the exhaust gases. Many developed countries of the world has committed themselves, inter alia also trough the Paris Agreement, to reduce global warming, and thus to reduce the production of harmful gaseous emissions. The result is the endeavour to replace the internal combustion engine vehicles that burn carbon fuels with the vehicles powered by electric motors consuming electric energy. The reason of such trying claims that road transport using the internal combustion engine vehicles is environmentally aggressive, and the problem would not be solved by implementation of the vehicles with electric motors. Such claim is based on the fact that an electric car does not produce any of primary emissions. From an overall perspective, it is also necessary to take into account secondary emissions that are produced during the electric energy production by which is the vehicle with electric motor powered. The purpose of this article is to assume the possibility of reducing global pollution by replacing the internal combustion engine vehicles with the vehicles powered by electric motors in dependence with producing the emissions during the production of electric energy.

show abstract

“…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%

“…to detect the PM concentration [11]. Figure 1 shows the diagram of PM sensor of Emisense Technologies, LLC [12,13], and the head of the sensor is vertically installed in the exhaust pipe downstream of the DPF. The concentration test zone based on the principle of capacitance locates between the central electrode and the internal baffle.…”

Section: Introductionmentioning

confidence: 99%

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

et al. 2019

View full text Add to dashboard Cite

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.

show abstract

The impact of voltage and flow on the electrostatic soot sensor and the implications for its use as a diesel particulate filter monitor

Cited by 22 publications

References 17 publications

Simulation and Experimental Research on the Charged Characteristics of Particulate Matter in the Sensor under Different Exhaust States

Simulation and Experimental Research on the Charged Characteristics of Particulate Matter in the Sensor under Different Exhaust States

Comparison of emissions depending on the type of vehicle engine

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

Contact Info

Product

Resources

About