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Cycle-to-cycle oscillations of heat release in a spark ignition engine |
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| Authors: | Grzegorz Litak Tomasz Kamiński Jacek Czarnigowski Dariusz Żukowski Mirosław Wendeker |
| Institution: | 1.Department of Applied Mechanics,Technical University of Lublin,Lublin,Poland;2.Institut für Mechanik und Mechatronik,Technische Universit?t Wien,Wien,Austria;3.Motor Transport Institute,Warsaw,Poland;4.Department of Machine Construction,Technical University of Lublin,Lublin,Poland;5.Department of Combustion Engines,Technical University of Lublin,Lublin,Poland |
| Abstract: | Fluctuations of combustion were studied using experimental time series of internal pressure in one of four cylinders in a spark ignition engine. Employing standard statistical methods like histograms and return maps, cycle-to-cycle variations of heat release were analyzed. A substantial difference in system behavior corresponding to quality of combustion was observed with a changing spark advance angle. Examining recurrence plots for a higher spark advance angle formation of specific patterns of vertical lines characteristic to intermittent behavior was found. |
| Keywords: | Spark ignition engine Combustion Time series analysis Recurrence plot Mechanics of machines |
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