Abstract
We report experimental observations of synchronization among combustion variations in different cylinders at fuel-lean conditions in an eight-cylinder spark ignition engine. Our results appear to confirm that synchronization readily occurs and that it becomes stronger as the overall equivalence ratio is reduced from stoichiometric. It also appears that the onset of synchronization is associated with bifurcation instabilities reported previously for combustion in single cylinders. We use both cross-correlation and symbolic time series analysis to quantify the apparent relationships between pairs of cylinders and multicylinder groups. Extension of a simple dynamic model for single-cylinder combustion variations to the multicylinder case appears to agree with the observations and provides a basis for further studies. The occurrence of significant cylinder-to-cylinder synchronization may have significant implications for engine diagnostics and control.
| Original language | English |
|---|---|
| Pages (from-to) | 1249-1255 |
| Number of pages | 7 |
| Journal | Proceedings of the Combustion Institute |
| Volume | 28 |
| Issue number | 1 |
| DOIs | |
| State | Published - 2000 |
| Event | 30th International Symposium on Combustion - Chicago, IL, United States Duration: Jul 25 2004 → Jul 30 2004 |
Funding
We gratefully acknowledge the support of the U.S. Department of Energy Office of Advanced Automotive Technologies and Ford Motor Company. We would also like to thank Tonya Green of tsg design for creating the intake manifold drawing in Fig. 1.
| Funders | Funder number |
|---|---|
| U.S. Department of Energy Office of Advanced Automotive Technologies | |
| Ford Motor Company |