Hydraulic pressure supply system of dual clutch transmission for vehicle

A hydraulic pressure supply system of a dual clutch transmission for a vehicle, the hydraulic pressure supply system comprising:

• a low pressure supply route comprising a low pressure hydraulic pump that generates a low hydraulic pressure using a fluid that is stored at a low pressure oil pan and that supplies the generated low hydraulic pressure directly to a gear lubrication device and a clutch cooling/lubrication device, and a cooler that cools a portion of a low hydraulic pressure that is supplied from the low pressure hydraulic pump and that supplies the portion of the low hydraulic pressure to the gear lubrication device or the clutch cooling/lubrication device;
• and
• a high pressure supply route comprising a high pressure hydraulic pump that generates a hydraulic pressure of a high pressure using a fluid that is stored at a high pressure oil pan and that supplies the generated high hydraulic pressure, a clutch control device including first and second clutch pressure control solenoid valves that supply a portion of the hydraulic pressure of the high pressure to first and second clutches, and a gear control device including a gear actuator pressure control solenoid valve that is configured to control other portions of the hydraulic pressure of the high pressure and that supplies the controlled hydraulic pressure to a gear actuator,
• wherein the low pressure supply route and the high pressure supply route each are formed with an independent closed circuit.