Fig. 2.46. Location of installation of oil spray nozzle valves: 1 – oil spray nozzle valve; 2 – cylinder block; 3 – crankshaft
The oil pressure acts on the check ball valve in the oil spray nozzle valve, opens and closes the oil passage of the nozzle, and controls the start and stop of oil supply. The oil pressure exceeding a certain value acts on the check ball valve in the oil spray nozzle valve, opens the oil passage of the nozzle, and oil is injected. Conversely, when the oil pressure does not exceed a certain value, the check ball valve is blocked by the force of the spring, and oil injection stops.