OIL SUPPLY SYSTEM OF AUTOMATIC TRANSMISSION

摘要

PURPOSE: An oil supply system of a transmission is provided to improve transmission power transmission efficiency by controlling partial flow rate with high pressure and to supplying the flow rate to a high pressure area. CONSTITUTION: A first oil pump(34) inhales oil of an oil storing place and supplies the oil to a low pressure area. A low pressure regulating valve(38) is connected to a low pressure area flow path which interlinks the first oil pump and the low pressure area. The low pressure regulating valve controls pressure of the oil discharged from the first oil pump as the pressure in which the low pressure area demands. A second oil pump(39) supplies the oil to a high pressure area through the low pressure regulating valve. A high pressure regulating valve(44) controls pressure of the oil discharge from the second oil pump as the pressure in which the high pressure area demands.