ATF WARMER COOLING WATER CIRCULATION SYSTEM AND ITS DESIGNING METHOD

摘要

PROBLEM TO BE SOLVED: To provide an ATF [Auto Transmission Fluid] warmer cooling water circulation system and its designing method in which an increasing of transmittance efficiency of a transmission and an improvement of fuel consumption are carried out through a fast increasing of AFT temperature under an operating condition of 70° or more and its cost and weight are decreased.SOLUTION: An ATF warmer cooling water circulation system of this invention is constituted by an ATF warmer to which engine cooling water is supplied, the engine cooling water is circulated to the ATF warmer for pre-heating a transmission even if engine cooling water is less than an operating temperature of the ATF warmer, then heating performance under a low temperature condition is maintained and at the same time improvement of fuel consumption is attained through improvement of transmittance efficiency of a transmission by a fast temperature increasing of ATF, an engine oil cooler and ATF warmer are connected in series to cause a cooling water line to be reduced in size and its cost and weight are reduced.SELECTED DRAWING: Figure 1