This content is not included in your SAE MOBILUS subscription, or you are not logged in.
Continuous Online Oil Consumption Measurement with the SO 2 Tracer Method
ISSN: 0148-7191, e-ISSN: 2688-3627
Published December 06, 2011 by SAE International in United States
Annotation ability available
Environmental issues have a significant influence on the development of modern combustion engines. Particularly the tightening of emission limits in Europe and the USA have to be considered in the development process. One issue that influences the emissions of engines is the oil consumption of the engine and thus the reduction of the oil consumption of combustion engines has gained importance in recent years. In order to optimize the oil consumption of the engine a measurement technique is needed that allows a very accurate detection of the engine oil consumption for steady state as well as for transient engine operation points. Since conventional measurement techniques provide only limited accuracy at long measuring times and are only applicable for steady state engine operation new methods for the online detection of the engine oil consumption have to be established. New methods for the oil consumption measurement are the tracer methods. Here, a tracer substance in the oil is used that can be detected in the exhaust gas. The actual oil consumption of the engine can then be calculated with the measured concentration of the tracer substance. One of the tracer methods is the SO2 tracer method. For this method sulfur is used as tracer in the engine oil. The oil consumption is calculated with the occurring sulfur dioxide (SO₂) in the exhaust gas.
The aim of this study was the implementation of the SO₂ tracer method at the Combustion Engines and Emission Control Laboratory at the University of Applied Sciences Regensburg. The detection of the SO₂ concentration in the exhaust gas was done by means of an IMR mass spectrometer. For the implementation and validation of the measurement setup was done by comparing the achieved results of the SO₂ tracer method to gravimetric oil consumption measurement results. For this purpose measurements with steady state and transient engine operation were carried out with the parallel measurement of the engines oil consumption with both techniques. Thereby the main focus was on low engine operation points because there low oil consumption rates are supposed to occur and thus the oil consumption measurement is most challenging there. Besides the validation of the measurement setup the influence of the engine operation mode and cylinder modifications was investigated. Therefore measurements with steady state and transient engine operation as well as single cylinder measurements on cylinders, on which special modifications had been applied, were carried out using the SO₂ tracer method for calculation the oil consumption.
CitationArtmann, C. and Rabl, H., "Continuous Online Oil Consumption Measurement with the SO2 Tracer Method," SAE Technical Paper 2011-01-2404, 2011, https://doi.org/10.4271/2011-01-2404.
- Gohl, M. Ihme, H. Schnelle Ölverbrauchsmessung im Abgas - Massenspektrometrische Bestimmung des Ölverbrauchs von Verbrennungsmotoren und dessen Einfluss auf die HC-Emissionen Final Report FVV, Project Nr. 707 2000
- Ariga, S. Sui, P. Shahed, S. “Instantaneous Unburned Oil Consumption Measurement in a Diesel Engine Using SO2 Tracer Technique,” SAE Technical Paper 922196 1992 10.4271/922196
- Bennett, P. Copp, D. Linna, J. Målberg, H. “The Effect of Lubricant Composition on Vehicle Exhaust Emissions,” SAE Technical Paper 972930 1997 10.4271/972930
- Püffel, P. Eine neue Methode zur schnellen und exakten Ölverbrauchsmessung MTZ 06 1999
- Appel, N. Gohl, M Robota, A. Vergleichende Untersuchungen zwischen Ölverbrauch und Ölemissionen an einem Ottomotor MTZ 06 2006
- Püffel, P. Boesl, U. Zeitaufgelöste Ölverbrauchsmessung mit Lasermassenspektrometrie VDI Report Nr. 1470 1996
- Hanaoka, M. Ise, A. Nagasaka, N. Osawa, H. et al. “New Method for Measurement of Engine Oil Consumption (S- Trace Method),” SAE Technical Paper 790936 1979 10.4271/790936
- Froelund, K. “Real-Time Steady-State Oil Consumption Measurement on Commercial SI-Engine,” SAE Technical Paper 1999-01-3461 1999 10.4271/1999-01-3461
- Yilmaz, E. Thirouard, B. Tian, T. Wong, V. et al. “Analysis of Oil Consumption Behavior during Ramp Transients in a Production Spark Ignition Engine,” SAE Technical Paper 2001-01-3544 2001 10.4271/2001-01-3544
- Gül, Ö. Akalin, Ö. Real Time Oil Consumption Measurement of a Heavy Duty Diesel Engine M.Sc. thesis Istanbul Technical University, Institute of Science and Technology 2007
- V&F Analyse- und Messtechnik GmbH Prozess-Massenspektrometer, Modell Airsense.net 2000