| 摘要 |
PURPOSE:To shorten the warming operation time in coldness by alowing oil circulation by switching into a heating circuit when the temperature is low and into a cooling circuit when the temperature is high by a sensor for detecting the temperature of the oil. CONSTITUTION:A sensor 6 detects the temperature of the lubricating oil in a transmission case 1 of a transfer car, and if the temperature is low, oil circulation is switched into a heating circuit 5, and the oil is heated during the time when the oil passes through the warm water in a radiator 4 or in the pipe arranged on the outer peripheral part of an exhaust pipe. When the oil temperature rises, the temperature is detected by the sensor, and oil circulation is swithed into a cooling circuit 3, and the oil is cooled during the time when the oil passes through an oil cooler 2. Therefore, even in cold time, the temperature rise can be obtained speedily, and the warming operation time can be shortened. |
