Estimation of a Noise Level Using Coarse-Grained Entropy of Experimental Time Series of Internal Pressure in a Combustion Engine

Abstract

We report our results on non-periodic experimental time series of pressure in a single cylinder spark ignition engine. The experiments were performed for different levels of loading. We estimate the noise level in internal pressure calculating the coarse-grained entropy from variations of maximal pressures in successive cycles. The results show that the dynamics of the combustion is a nonlinear multidimensional process mediated by noise. Our results show that so defined level of noise in internal pressure is not monotonous function of loading.

12 pages, 6 figures

References in corpus (4)

• Noise level estimation of time series using coarse grained entropy
• Combustion Process in a Spark Ignition Engine: Dynamics and Noise Level Estimation
• Nonperiodic Oscillations of Pressure in a Spark Ignition Engine
• Chaotic Combustion in Spark Ignition Engines

Cited by in corpus (3)

• Novel techniques for improving NNetEn entropy calculation for short and noisy time series
• Combustion Process in a Spark Ignition Engine: Analysis of Cyclic Maximum Pressure and Peak Pressure Angle
• On cycle-to-cycle heat release variations in a simulated spark ignition heat engine