The technical possibility of decreasing engine emissions and fuel consumption in relation to the increase in the usable engine parameters has been presented in the paper. The above problem relates to the dynamic and kinematic properties of airflow into the combustion chamber. The effect of swirl in the intake manifold that refers to the achieved engine operating parameters and emission level was presented in the paper. The included results of the experimental research of airflow swirl in the air intake model allowed getting answers related to the issues of flow resistance. The analysis of literature and the analysis of the modeling results led to conclusions about the theoretical and practical possibilities of flexible intake duct implementation.