Dual-valve orifice-area-variable fuel nozzle
A fuel nozzle and nozzle hole area technology, which is used in fuel injection devices, engine components, machines/engines, etc., can solve the problem that fuel nozzles cannot achieve flexible and adjustable fuel injection rules, and achieve the effect of improving fuel atomization.
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[0021] Preferably, the socket 3 is designed with an oil inlet ring groove 9 communicating with the socket oil inlet 27, and the nozzle body 6 includes two oil inlet passages, a main oil inlet 23 and an auxiliary oil inlet 11. The main oil inlet 23 and the auxiliary oil inlet The oil holes 11 communicate with the oil tank 12 respectively.
[0022] Preferably, the number of milling planes 20 is 2 to 4, and they are evenly arranged in the circumferential direction.
[0023] Preferably, the number of oil inlet grooves 13 is 2 to 4, and they are evenly arranged in the circumferential direction.
[0024] Preferably, the hydraulic diameter of the auxiliary nozzle hole 14 is smaller than 1 / 4 of the hydraulic diameter of the main nozzle hole 15.
[0025] Preferably, the cone angles of the cones where the main nozzle holes 15 and the auxiliary nozzle holes 14 are located are in the range of 140°-160°, and the number of nozzle holes is in the range of 8-12.
[0026] The high-pressure fuel enters ...
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