Influences of Abnormal Cooling Conditions on the Distribution of Cylinder Temperature in an Air-Cooled Farm Engine “Kohler Engine”

Abstract

The distribution of cylinder temperature and the change of amount of inhaled cooling air affected by such abnormal cooling conditions as the blockade of the cooling air screen or the inlet of the fin cover and the slackness or the distortion of the fin cover at the side or at the head were investigated with the following results.
1. The more ununiform distribution of cylinder temperature results from the more abnormal conditions as well as from the increase of the r. p. m. and the load.
2. The more severe blockade of the inlet of the head cover makes cylinder temperature higher, especially at the frontage, while the similar abnormal condition at the inlet of the side cover results in the higher cylinder temperature at the rear and the lower at the frontage.
3. By the increase of the slackness of either the side or the head fin cover, the rising of cylinder temperatures at the side and other parts takes place.
4. In proportion to the degree of the abnormal cooling conditions, not only the rising rate of cylinder temperature is greater but also the temperature reaches the higher extreme value after the lapse of longer time.