This content is not included in your SAE MOBILUS subscription, or you are not logged in.
Performance Characteristics of a New On-Board Engine Exhaust Particulate Matter Sensor
ISSN: 0148-7191, e-ISSN: 2688-3627
Published October 24, 2005 by SAE International in United States
Annotation ability available
A new electronic sensor has been developed to measure the time-resolved concentration of carbonaceous particulate matter (PM) emitted in engine exhaust. The sensor is approximately the size of a standard automotive spark-plug or lambda sensor and can be mounted directly in the engine exhaust. It consists of a pair of closely spaced electrically isolated electrodes that protrude into the exhaust flow. One electrode is given a voltage bias of 1000 V while the other is the signal electrode. The sensor is capable of providing cycle-resolved feedback on the carbonaceous PM concentration in the exhaust to the engine control unit (ECU), thereby enabling real-time control of engine operating parameters to lower PM emissions. This paper reports the results of an experimental study of various parameters that affect the performance of the electronic sensor. Parameters considered included sensor electrode length, diameter, electrode spacing, applied bias voltage, bulk flow velocity across the sensor electrodes, and the concentration of carbonaceous particulate matter in engine exhaust. The sensor was tested in the exhaust of a single cylinder diesel engine. The sensor signal varied linearly with the carbon mass concentration in the exhaust, the applied bias voltage and electrode length; it also showed some sensitivity to the bulk flow velocity, and an inverse power dependence on the spacing between the electrodes. Electrode diameter did not have a significant effect on the sensor signal. A correlation was developed to predict the sensor signal under any engine operating condition and values of these parameters. This correlation could be used to develop control strategies for the sensor for on-board operation in a production vehicle. The experiments also provided insight into the physical mechanism governing sensor behavior, regarding the charge transport between the two electrodes of the sensor.
CitationWarey, A. and Hall, M., "Performance Characteristics of a New On-Board Engine Exhaust Particulate Matter Sensor," SAE Technical Paper 2005-01-3792, 2005, https://doi.org/10.4271/2005-01-3792.
SAE 2005 Transactions Journal of Fuels and Lubricants
Number: V114-4 ; Published: 2006-02-01
Number: V114-4 ; Published: 2006-02-01
- Warey, A., Hendrix, B., Hall, M., Nevius, T., ‘A New Sensor for On-Board Detection of Particulate Carbon Mass Emissions from Engines’, SAE Paper 2004-01-2906, 2004
- Hendrix, B., ‘Development of a Production Style Probe to Measure Particulate Emissions in Commercial Diesel Engine Exhaust’, M.S Thesis, Department of Mechanical Engineering, The University of Texas at Austin, 2003.
- Witze, P.O., ‘Diagnostics for the Measurement of Particulate Matter Emissions from Reciprocating Engines’, Proceedings of the Fifth International Symposium on Diagnostics and Modeling of Combustion in Internal Combustion Engines - COMODIA 2001, 2001.
- Allan, W.D.E., Freeman, R.D., Pucher, G.R., Faux, D., Bardon, M.F., Gardiner, D.P., ‘Development of a Smoke Sensor for Diesel Engines’, SAE Paper 2003-01-3084, 2003.
- Schweimer, G.W., ‘Ion Probe in the Exhaust Manifold of Diesel Engines’, SAE Paper 860012, 1986.
- Collings, N., Baker, N., Wolber, W.G., ‘Real-Time Smoke Sensor for Diesel Engines’, SAE Paper 860157, 1986.
- Hong, G., Collings, N., Baker, N.J., ‘Diesel Smoke Transient Control Using a Real-Time Smoke Sensor’, SAE Paper 871629, 198.
- Ishida, K., ‘Study of Continuous Measurement Method for Diesel Exhaust Emissions’, Horiba Internal Paper, Horiba Instruments Inc., 1984.