Title :
Effect of transient residual gas fraction for gasoline engines
Author :
Kako, Junichi ; Sata, Kota ; Ohata, Akira ; Jun Yang ; Tielong Shen
Author_Institution :
Toyota Motor Corp., Toyota, Japan
Abstract :
The residual gas fraction (RGF) greatly affects misfiring, the heat release pattern of combustion, auto-ignition, the NOx emission. There is a possibility that RGF estimation improves the accuracy of engine control. This paper describes a transient RGF estimation based on a physical model and the effect of RGF on transient air fuel ratio. This study shows the auto-correlation function of RGF takes negative values at k = 1 (k: sampling number) and the residual gas causes the dynamic effect of air-fuel ratio calculated from the composition of burned gas.
Keywords :
combustion; ignition; internal combustion engines; NOx; auto-ignition; autocorrelation function; automotive engines; burned gas composition; combustion; dynamic air-fuel ratio effect; engine control; gasoline engines; heat release pattern; misfiring; physical model; transient RGF estimation; transient air fuel ratio; transient residual gas fraction effect; Atmospheric modeling; Combustion; Engines; Estimation; Fuels; Heating; Integrated circuits; air fuel ratio control; automotive control; engine control; physical model; residual gas fraction estimation;
Conference_Titel :
Control Conference (CCC), 2013 32nd Chinese
Conference_Location :
Xi´an
