TY - JOUR
TI - Possibilities to identify engine combustion model parameters by analysis of the instantaneous crankshaft angular speed
AU - Popović Slobodan J
AU - Tomić Miroljub V
JN - Thermal Science
PY - 2014
VL - 18
IS - 1
SP - 97
EP - 112
PT - Article
AB - In this paper, novel method for obtaining information about combustion  process in individual cylinders of a multi-cylinder Spark Ignition Engine  based on instantaneous crankshaft angular velocity is presented. The method  is based on robust box constrained Levenberg-Marquardt minimization of  nonlinear Least Squares given for measured and simulated instantaneous  crankshaft angular speed which is determined from the solution of the engine  dynamics torque balance equation. Combination of in-house developed  comprehensive Zero-Dimensional Two-Zone SI engine combustion model and  analytical friction loss model in angular domain have been applied to provide  sensitivity and error analysis regarding Wiebe combustion model parameters,  heat transfer coefficient and compression ratio. The analysis is employed to  evaluate the basic starting assumption and possibility to provide reliable  combustion analysis based on instantaneous engine crankshaft angular speed.  [Projekat Ministarstva nauke Republike Srbije, br. NPEE-290025 and TR-14074]