| 摘要 |
PROBLEM TO BE SOLVED: To provide a relief device of an oil pump capable of executing relief under pressure rise regardless of a temperature of an oil, and simplifying a constitution. ! SOLUTION: A relief device of an oil pump includes a relief valve A composed of a valve housing 3 having a small-diameter valve chest 31, a large-diameter valve chest 32, and a relief discharge portion 35, a temperature sensitive valve B, an oil pump 9, a main flow channel 61, a relief flow channel 62, an auxiliary flow channel 63, and an orifice 37. The relief flow channel 62 constantly communicates one of the small-diameter valve chest 31 and the large-diameter valve chest 32 and the oil pump 9, and makes the oil dischargeable from the relief discharge portion 35, and the auxiliary flow channel 63 makes the other of the small-diameter valve chest 31 and the large-diameter valve chest 32 communicatable to the oil pump 9, and includes the temperature sensitive valve B. The temperature sensitive valve B keeps the auxiliary flo |
