This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Detection of Flame Propagation During Knocking Combustion by Optical Fiber Diagnostics
Annotation ability available
Sector:
Language:
English
Abstract
This paper presents results on the phenomenon of knocking (detonation) during combustion in a single-cylinder spark ignition engine. The investigation of knocking combustion was made possible by observing in-cylinder flame propagation with a measuring technique that uses optical fibers coupled with photo-multipliers.
The results indicate that knocking combustion appears to occur as a result of autoignition and/or acceleration of the flame front in the squish crevices. At high knock intensities, the flame front velocity can be supersonic.
The occurrence of knock damage does not necessarily correspond with location of knock onset. Rather, knock damage is observed at a location where pressure waves, induced by detonation, are reflected and accompanied by pressure peaks.
Recommended Content
Authors
Citation
Spicher, U. and Kollmeier, H., "Detection of Flame Propagation During Knocking Combustion by Optical Fiber Diagnostics," SAE Technical Paper 861532, 1986, https://doi.org/10.4271/861532.Also In
References
- Ricardo R. The High Speed internal Combustion Engine Blockie &. Sons Ltd. London, Glasgow 1923
- Withrow Rassweiler G.M. Slow Motion Shows Knocking and Non-knocking Explosions JSAE 39 1936
- Curry S. The Relationship between Flame Propagation and Pressure Development During Knocking Combustion SAE Transactions, Paper 647-B 71 1963
- Haskell W.W. Bame J. L. Engine Knock And End-Gas Explosion SAE-Paper 650606
- Affleck W.S. Fish A. Knock: Flame Acceleration or Spontaneous Ignition? Combustion and Flame 12 1968 243
- Maly R. Ziegler G. Thermal Combustion Modeling - Theoretical and Experimental Investigations of the Knocking Process SAE-Paper 820759
- Maly R. Ziegler G. Theoretical and Experimental Investigation of the Knocking Process Internal Symposium on “Knocking of Combustion Engines” Wolfsburg November 1981
- Arrigoni V. Calvi G.F. Gaetani S. Giavazzi F. Zanoni G.F. Recent Advances in the Detection of Knock in S. I. Engines SAE-Paper 780153
- Pischinger F. Adolph N. Investigation of Knock Damage Internal Symposium on “Knocking of Combustion Engines” Wolfsburg November 1981
- Adoph N. Messung des Klopfens an Ottomotoren Dissertation RWTH Aachen 1983
- Renault F. A New Technique to Detect and Control Knock Damage SAE-Paper 820073
- Leppard W.R. Individual-Cylinder Knock Occurrence and Intensity in Multicylinder Engines SAE-Paper 820072
- Iwashita Y. Saito A. Observation of Knock Using a High Speed Shutter TV Camera System SAE-Paper 831696
- Hayashi T. Taki M. Koyima S. Kondo T. Photographic Observation of Knock with a Rapid Compression and Expansion Machine SAE-Paper 841336
- Nakajima Y. Nagai T. Iijima T. Yokoyama J. Nakamura K. Analysis of Combustion Patterns Effective in Improving Anti-knock Performance of a Spark Ignition Engine JSAE Review March 1984
- Spicher U. Untersuchungen ueber die rseumliche Ausbreitung und das Erloeschen der Flamme bei der ottomotorischen Verbrennung Dissertation RWTH Aachen 1982
- Pischinger F. Spicher U. Raeumliche Flammenausbreitung und “flame quenching” bei ottomotorischer Verbrennung Paper 845000 XX. FISITA-Kongress Wien 1984
- Spicher U. Velji A. Measurements of Spatial Flame Propagation and Flow Velocities in a Spark Ignition Engine XX. Symposium on Combustion Ann Arbor 1984 19 27
- Klueting M. Spicher U. Pischinger F. Flammenausbreitung magerer Gemische in Brennraeumen von Ottomotoren VDI-Symposium Lean Burn Engines Wolfsburg 1985 37 54