Journal of Theoretical
and Applied Mechanics
47, 1, pp. 55-67, Warsaw 2009
and Applied Mechanics
47, 1, pp. 55-67, Warsaw 2009
Indicated mean effective pressure oscillations in a natural gas combustion engine by recurrence plots
We investigate the nonlinear time series of Indicated Mean Effective Pressure ($\mathit{IMEP}$) of the spark ignition engine cyclic combustion process of a natural gas. By applying the embedding theorem and the recurrence plots technique, we show changes in the engine dynamics for different equivalence ratios. Especially, we provide arguments for intermittency behaviour.
Keywords: engine; combustion; recurrence plot; nonlinear oscillations