3412860 piston cooling nozzle 3687058
a piston it includes cooling nozzle, fuel injection pipe, fuel injection pipe is fixed on the side of the metal ring and connected with the metal ring, the bolt is provided with an oil passage, the spool placed in bolts, spring-loaded spool, limiting block against the spring bolt sleeve into the metal ring and metal ring in the oil inlet hole and the bolt in the hole alignment. The oil inlet channel is communicated with the main oil engine cylinder bolt, when the engine output power is larger, the oil inlet passage of the oil pressure increases, the pressure acting on the valve core is increased, thus the compression spring, the spool moves, the oil from the oil inlet to the outlet hole, ejected from the fuel injection pipe, acting on the piston cooling nozzle. The structure is reasonable, and the acting force acting on the piston cooling nozzle is uniform. />