Modeling of a Torch Ignition System Using One-Dimensional Model of Computational Simulation 2014-36-0332
An torch ignition system with homogeneous charge is numerically analyzed using a one-dimensional computational model. The new ignition system is implemented in a four-cylinder engine, spark ignition, 1600 cm3, 16 valves. Parameters such as mass burn fraction profile and pressure vs crank angle are compared with experimental data obtained with the torch ignition system operating homogeneous charge with stoichiometric mixture. The computational model uses information such as the pre-chamber pressure as a function of crack angle, intake and exhaust pressure, volumetric efficiency, maps of injection and ignition, valve discharge and valve intake coefficient, lifting valve, laminar flame speed, among others parameters. A simulation model of the torch ignition system, after being validated with experimental data, should provide information on increasing the burning rate, possibility of burning lean mixtures, more complete burn of the mixture, less sensitivity to composition and state of the mixture among others points that could be improved in control and ignition system design by torch ignition. To simulate the GT-POWER program and the results will used to obtain important information of the air flow and combustion in the cylinder in order to improve the original design of the torch ignition system.