OIL COOLER INNER FIN

摘要

PURPOSE: An oil cooler inner fin is provided to achieve improved cooling performance by allowing for a smoothness of oil flow and increasing the volume of radiation. CONSTITUTION: An oil cooler inner fin(20) comprises unit panels(23) repeated arranged in a lengthwise direction. Each of the unit panels has a mountain(21) and a canal(22). The unit panel has a pitch(P) of a cycle, wherein the pitch satisfies the expression of 8mm<P<=15mm, and the fin height(H) satisfies the expression of 2.5mm<H<=5mm. The side portions of the unit panels are interconnected in a circumferential direction, in such a manner that the mountains and the canals of the adjacent unit panels are staggered from each other.