ATF AN ATF OIL BY-PASS VALVE IMPROVED THERMO-SENSITIVITY

摘要

The present invention relates to a bypass valve of ATF oil with improved temperature sensitivity. The bypass valve of ATF oil with improved temperature sensitivity according to an embodiment of the present invention includes a first transmission pipe 110 and a second transmission pipe 120 connected to the transmission side, and a first cooler pipe 130 connected to the oil cooler side ) And the second cooler pipe 140, the bypass passage connecting the first transmission pipe 110, the second transmission pipe 120, the first cooler pipe 130 and the second cooler pipe 140 therein A housing 100 including 150; And a valve assembly 200 provided inside the housing 100 and opening and closing the bypass flow path 150. In the bypass valve of ATF oil, the valve assembly 200 includes a valve plate 210. ) Through portion 221, a support portion 222 surrounded by the main spring 250, a first protrusion 223 contacting the top of the main spring 250, and a wax filled with a wax whose volume changes at a specific temperature It characterized in that it comprises a; valve spool (220) having a filling portion (224). According to the present invention, by improving the temperature sensitivity of the bypass valve of the ATF oil to the oil discharged from the transmission side, it is possible to prevent overcooling of the transmission to improve transmission performance.