Heat release rate and performance simulation of DME fuelled diesel engine using oxygenate correction factor and load correction factor in double Wiebe function

Thermodynamic modeling of combustion process of the internal combustion engines – an overview

“…In summary, it can be concluded that the average temperature in the cylinder does not have a significant influence over the engine performance prediction. According to the author [28] the ten percent of heat transfer prediction error leads to the order of one per cent performance prediction error [18]. A single-zone models, allows to predict the heat release rate with high accuracy.…”

“…Due to the fact that the combustion chamber is divided into two zones, it gives a more accurate prediction of the temperature inside the cylinder. Therefore, many publications devoted to a two-zone modeling of the combustion process, except the similar issues that are also solved by single-zone modeling (presented in the [18,26,29,31] and others), aimed to additional issues:…”

Development and Validation of Heat Release Characteristics Identification Method of Diesel Engine under Operating Conditions

“…The Wiebe model was proposed in 1970 [17] to determine the heat release using singlephase (kinetic) combustion and double-phase (kinetic-diffusion) combustion functions with various types of fuel. The model continues to be widely used in internal combustion engine (ICE) research [21][22][23][27][28][29][30][31][32][33]. In the initial research stage, virtually all the Wiebe heat release characteristic parameters are determined according to experimental indicator diagrams with the engine operating in rated power and part load modes.…”

“…Engine energy parameters were assessed by recalculating m and ϕ z for each load mode according to indicator diagrams, and the average error was 3%. In [33], the authors converted a diesel engine to operate on dimethyl ether. The results of applying the double-phase Wiebe function (parameters were derived from experimental indicator diagrams) to an engine (B/S 92/96 mm; 15,6 kW; 2600 RPM) are satisfactorily compatible with experimental data.…”

“…For practical applications, determining m and ϕ z parameters is extremely important under various engine operating conditions. In general, these parameters are determined based on experimental data when the pressure in the cylinder is registered (i.e., when registering indicator diagrams) [27][28][29][30][31][32][33]. According to ongoing research, no technological difficulties are encountered in performing engine bench tests under laboratory conditions to record the pressure in the cylinder and other operating parameters.…”