Abstract
A few chosen methods of swirl generation inside the cylinder were presented in this article. There were presented the results of impact of intake channel geometry on chosen charge movement parameters related to the air-flow inside the cylinder. Moreover, there was presented an authors own conception of flexible and steerable element applied inside the inlet channel. This element influenced on kinematics of airflow through the inlet manifold. The result of this influence was observed as a swirl inside the inlet channel and inside the cylinder. There were also presented the results of experiment related to the own conception of swirl generation. The results of experimental research were compared with results of numerical calculation of air flow prepared on basis of ANSYS CFD. As final result it was stated that proponed flexible element inside the inlet channel have a significant impact on charge kinematics and it easy can controlled by engine control unit.
Highlights
The modern engines are being equipped with different kinds of technical solutions related to achievement of low fuel consumption and ultra-low emission [1]
Theoretical background On the basis of literature analysis there was prepared the new proposition of the technical method of swirl generation
By this method it is possible to generate a different level of swirl speed inside the inlet channel and inside the cylinder
Summary
The modern engines are being equipped with different kinds of technical solutions related to achievement of low fuel consumption and ultra-low emission [1]. These solutions are mainly connected with the engine control system, engine mechanicals, mixture formation and combustion [2]. It is caused by an increase in engine efficiency (torque, power, specific fuel consumption, emission, etc.). The high efficiency of energy conversion process is strongly depended on proper air-fuel mixture formation This mixture must be combusted in practically optimal for each engine work conditions. Currently mainly numerical models of combustion chambers are used for analysis of incylinder flow motion
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