In addition, the optimization results showed that the optimum engine operating conditions employed a premixed charge compression ignition combustion regime with early injection and a narrow spray included angle. Through the preset optimization, a 35% improvement in the gross indicated that specific fuel consumption was achieved. In addition, the computational models were validated against the experimental results for a stoichiometric process in terms of the combustion pressure history and emissions. In addition, an auto mesh generator was developed for generating various kinds of combustion chambers, such as open-crater, re-entrant, deep, and shallow types. The optimization variables were composed of ten variables related to the combustion chamber geometry and engine operating conditions. The KIVA code, coupled with a micro genetic algorithm population of nine for each generation was used.

This paper describes the optimization of combustion chamber geometry and engine operating conditions for stoichiometric diesel combustion, targeting lower gross indicated specific fuel consumption.

Optimization of combustion chamber geometry for stoichiometric diesel combustion using a micro genetic algorithmĮnergy Technology Data Exchange (ETDEWEB)

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