| 摘要 |
A piston cooling oil spray nozzle is provided to spray oil on a lower surface of a piston additionally when an engine is operated at a high speed, using two nozzle pipes, to increase piston cooling efficiency, and to remove an oil pressure control valve to simplify the component of the nozzle. A piston cooling oil spray nozzle(1) comprises a nozzle body(3), a nozzle pipe, and a cutoff valve(10). The nozzle body is installed at a cylinder block(2) of an engine. The nozzle pipe is installed at one side of the nozzle body. The cutoff valve, which is installed in the nozzle body, controls oil spray through the nozzle pipe. The nozzle pipe has first and second nozzle pipes(4,5). The two nozzle pipes are operated by the cutoff valve according to the oil pressure in order to supply the cooling oil to a piston of the engine. The cutoff valve includes a valve housing(11), inner and outer springs(12,13), and a retainer(14). |
