This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Torque Nonuniformity Measurements in Gasoline Fueled Passenger Cars Equipped with Automatic Transmission - Theory and Experimental Results
Annotation ability available
Sector:
Language:
English
Abstract
This paper presents theory and experiments results for a noncontacting method of measuring reciprocating IC engine torque nonuniformity. This method yields an index of torque nonuniformity which is potentially useful for detecting abnormal engine operation and has important application for control and diagnostic functions. The nonuniformity index can be computed for each engine cycle if desired or averaged over many cycles. The method also has the capability of detecting intermittent abnormal operations.
This paper explains the nonuniformity index and describes noncontacting instrumentation with which it can be measured. The results of experimental measurements of the nonuniformity index in actual operation of a vechicle equipped with an automatic transmission are presented. The statistical distribution of this index is shown to be such that abnormal engine operation can be reliably detected even if such operation occurs infrequently.
Authors
Citation
Ribbens, W. and Gross, D., "Torque Nonuniformity Measurements in Gasoline Fueled Passenger Cars Equipped with Automatic Transmission - Theory and Experimental Results," SAE Technical Paper 860414, 1986, https://doi.org/10.4271/860414.Also In
References
- Ribbens W. B. “A New Metric for Torque Nonuniformity,” SAE Intl. Congress & Exposition Cobo Hall Detroit, Mich. Feb. 28 Mar. 4 1983 SAE 830425
- Ribbens W. B. “Experimental Road Test of a Noncontacting Method of Measuring I-C Engine Torque Nonuniformity” SAE Intl. Congr. & Exposition Cobo Hall Detroit, Mich. Feb. 25 Mar. 1 1985 SAE 850454
- Citron, S. T. Milhelc W. P. “An Online Engine Roughness Measurement Technique” SAE Intl. Congress & Exposition Cobo Hall Detroit, Mich. Feb. 22 Mar. 2 1984 SAE 840136
- Cook J. C. “Application of a Crankshaft Position Sensor to Control Engine Timing SAE 780213
- Ribbens W. B. “A Noncontacting torque Sensor for the Internal Combustion Engine” SAE Intl. Congr. & Exposition Cobo Hall Detroit, Mich. Feb. 23-27 1981 SAE 810155
- Takashi, Kamo “Lean Mixture Sensor” SAE Intl Congr. & Exposition Cobo Hall Detroit, Mich. Feb. 25 Mar. 1 1985 SAE 850380