| 摘要 |
Disclosed are a method for determining pitches of cooling fins (104) for a pneumatic tire so that the heat dissipation performance of the sidewall (102) may be improved and an airflow noise generated by a high speed air may be decreased, and a pneumatic tire (100) including the cooling fins arranged by the same. The method for determining pitches of cooling pins for a pneumatic tire, including: selecting a total number of cooling fins, the number of pitch-types, and a size of each pitch; generating a random number and arranging each type of pitch sequentially by the generated random number to produce a random pitch arrangement; Fourier transforming the obtained pitch arrangement to calculate a result value (FT); and repeatedly performing the steps of producing a random pitch arrangement and calculating the FT to determine a pitch arrangement when a change in amplitude of the FT is smallest, wherein the cooling fin includes a first bar part (110) and a second bar part (106) which are connected with each other at an acute angle, wherein the second bar part is formed to be inclined in the radial direction of the tire, and an end portion of the second bar part is disposed closer to a center of rotation of the tire than an end portion of the first bar part in the radial direction of the tire. |
