Methodology for characterisation and simulation of turbocharged diesel engines combustion during transient operation. Part 2: Phenomenological combustion simulation

Experimental assessment of a pre-turbo aftertreatment configuration in a single stage turbocharged diesel engine. Part 2: Transient operation

“…The main components of the engine are indicated in Figure 15: cylinders, in which the combustion process is modelled as a function of the crank angle and the engine operating conditions using an interpolation methodology on a rate of heat release database [14]; charge air and EGR coolers, which are modelled as pipe beams with inlet and outlet volumes [35]; specific models for compressors [36] and turbines [37]; and aftertreatment systems with focus on fluid dynamic aspects for accurate pressure drop and acoustic prediction [38] besides the influence of the heat transfer effects [39] and the consideration of clean [40] and soot loaded substrate [41] in the case of the DPF.…”

Considerations on the low-pressure exhaust gas recirculation system control in turbocharged diesel engines

“…Finally OpenWAM is linked with Matlab for control system simulation and evaluation [21]. Complete model fitting process is described in [22,20], while some application showing the performance of the model may be found in [17,23].…”

“…OpenWAM is a freeware simulation tool developed at CMTMotores Térmicos based on a one-dimensional code with specific sub-models for turbocharger [19] and combustion process modelling [20]. Finally OpenWAM is linked with Matlab for control system simulation and evaluation [21].…”

Analysis of heavy-duty turbocharged diesel engine response under cold transient operation with a pre-turbo aftertreatment exhaust manifold configuration

“…The engine database, which represents the transient and steady operation range of the engine homogeneously, contains a set of RoHR defined by means of combined Wiebe's functions. The parameters defining the Wiebe's functions were obtained from a phenomenological parameterization of the RoHR [4], which was previously determined from the post-processing of the experimental in-cylinder pressure with a combustion diagnostic code [3]. The collection of the EGR mass flow in the case of the pre-turbo aftertreatment configuration is located between the DPF and the HPT.…”

“…Significant achievements in engine performance and emission reductions have been reached in the last years with because of studies regarding the injection [1] and combustion process [2], the understanding of transient operation [3] [4] and pollutant formation during these phases [5] [6], the turbocharging systems [7] or the exhaust gas recirculation [8]. However, the current and future emission regulations [9] demand very low levels of pollutant emissions that have led to an extensive implantation of aftertreatment devices along the exhaust line of Diesel engines [10].…”