| 摘要 |
PROBLEM TO BE SOLVED: To provide a piston cooling jet which can stop oil injection during cold state, with a simple structure.SOLUTION: A piston cooling jet 1 includes a body 2, a valve mechanism unit 3 for oil temperature, and a valve mechanism unit 4 for oil pressure. An oil temperature sensing valve 31 is arranged to be connected and disconnected on the upstream side of an oil pressure sensing valve 41. The oil temperature sensing valve 31 and oil pressure sensing valve 41 have the same stroke direction. The valve mechanism unit 3 for oil temperature and the valve mechanism unit 4 for oil pressure are arranged side by side in a direction crossing the stroke direction. During a cold low pressure state, a cold high pressure state, and a warm low pressure state, a flow passage is closed by the oil temperature sensing valve 31 and the oil pressure sensing valve 41 in contact with each other. During the warm high pressure, the flow passage is opened by the oil temperature sensing valve 31 and oil pressure sensing valve 41 which are spaced apart. |
