Combustion Process in a Spark Ignition Engine: Dynamics and Noise Level Estimation

Abstract

We analyse the experimental time series of internal pressure in a four cylinder spark ignition engine. In our experiment, performed for different spark advance angles, apart from usual cyclic changes of engine pressure we observed oscillations. These oscillations are with longer time scales ranging from one to several hundred engine cycles depending on engine working conditions. Basing on the pressure time dependence we have calculated the heat released per cycle. Using the time series of heat release to calculate the correlation coarse-grained entropy we estimated the noise level for internal combustion process. Our results show that for a smaller spark advance angle the system is more deterministic.

15 pages, 7 figures, submitted to CHAOS

References in corpus (2)

• Noise level estimation of time series using coarse grained entropy
• Chaotic Combustion in Spark Ignition Engines

Cited by in corpus (4)

• Estimation of a Noise Level Using Coarse-Grained Entropy of Experimental Time Series of Internal Pressure in a Combustion Engine
• Combustion Process in a Spark Ignition Engine: Analysis of Cyclic Maximum Pressure and Peak Pressure Angle
• A Numerical Study of a Simple Stochastic/Deterministic Model of Cycle-to-Cycle Combustion Fluctuations in Spark Ignition Engines
• Wavelet Analysis of Cycle-to-Cycle Pressure Variations in an Internal Combustion Engine