Studies on the Improvement of Cooling Performance of Farm Air Cooled Engines (VI)

Abstract

In this report, the cooling performance of farm air-cooled engines with three types of the radial fan, were compared, and the following results were obtained. A higher cooling efficiency was attained by blades curved backwardly.
As for the size of the fan, the forward bent blades can be made smaller than those of the fan with the radial outlet blades or the backward bent blades for equal speed and wind pressure head.
For this reason, it seems that the engine required smaller size ought to employ the forward bent blade fans.