Analysis of Combustion Chamber Resonance in Dl Automotive Diesel Engines

The resonance due to the oscillation of burned gases in the combustion chamber is particularly important in DI diesel engines because it appears to be the main excitation source of the engine block during the combustion process. This fact has induced researchers to the application of different techniques in order to study its generation mechanisms and to determine its dependence on combustion parameters such as bowl geometry, type of injector, injection settings, etc. In this work, a methodology that contributes to such studies is proposed, in which a CFD approach and results from modal theory are used. First, these techniques are evaluated and verified in a simple case. Then, they have been applied to the analysis of multi-ignition zones and three different bowl geometries, indicating their potential for the control of combustion chamber resonances.

[1]  N. A. El-Sebai,et al.  Combustion Noise Prediction Inside Diesel Engine , 1999 .

[2]  Jens Winkler,et al.  Active Noise Control and Sound Quality Design in Motor Vehicles , 1999 .

[3]  Antonio J. Torregrosa,et al.  Wavelet Transform applied to Combustion Noise Analysis in High-speed DI Diesel Engines , 2001 .

[4]  D. Anderton,et al.  Relation Between Combustion System and Engine Noise , 1979 .

[5]  R. B. Randall,et al.  Influence of the resonant frequency on the control of knock in diesel engines , 1999 .

[6]  M. F. Russell,et al.  Combustion noise from high speed direct injection Diesel engines , 1985 .

[7]  LJubisa Stankovic,et al.  Time-frequency analysis of multiple resonances in combustion engine signals , 1999, Signal Process..

[8]  Kazuhiro Nakashima,et al.  New measuring technique of cylinder pressure spectrum and its application to combustion noise reduction Time-frequency analysis of combustion excitation using wavelet transform analysis , 1998 .

[9]  L. J. Eriksson,et al.  Higher order mode effects in circular ducts and expansion chambers , 1979 .

[10]  Eiji Fukumori,et al.  Calculation of the In-Cylinder Flow and Heat Transfer in DI and IDI Diesel Engines , 1989 .

[11]  Weeratunge Malalasekera,et al.  An introduction to computational fluid dynamics - the finite volume method , 2007 .

[12]  Karl Schmillen,et al.  Cycle-to-cycle variations of combustion noise in diesel engines , 1989 .

[13]  John B. Heywood,et al.  Fluid Motion Within the Cylinder of Internal Combustion Engines—The 1986 Freeman Scholar Lecture , 1987 .