The 3-d Simulation with Detailed Chemical Kinetics of the Turbulent Combustion in a Pre-chamber Indirect Injection Diesel Engine

A 3-D CFD model based on KIVA 3 code is developed with a “reduced” detailed chemical kinetics of 291 elementary reaction steps with 79 chemical species for diesel fuel combustion. The model was validated by the corresponding experimental results and employed to examine some important parameters which have significant effects on the engine performance for an IDI diesel engine with a swirl chamber. It shows as an example that chamber surface temperature, nitrogen addition, liquid fuel spray cone angle, injection timing, and activated radicals in the residual gases can have significant effects on engine combustion and performance. The modeling approach has the potential to be employed for predicting and optimizing engine performance. Some apparent limitations of the model were identified and some potential remedial measures outlined.