Method for structural design of cooling circuit utilized for cooling internal combustion engine attenuating sound frequencies in vehicle, involves minimizing amplitude of sound wave at exit of cooling circuit by adjusting cooling circuit

摘要

The method involves minimizing amplitude of a sound wave at an exit of a structure of a cooling circuit (4) excited by a predefined incidental sound wave i.e. plane wave, by adjusting the structure of the cooling circuit. Sound frequencies lie between 500 hertz and 700 hertz. The amplitude of the sound wave corresponds to pressure or flow of the sound wave. An adjusted parameter of the structure of the cooling circuit is adjusted to geometry of an elbow of the cooling circuit.