FLUID INJECTOR Russian patent published in 2012 - IPC F02M47/04 F02M45/08 F02M51/06 

FIELD: engines and pumps.

SUBSTANCE: proposed fluid injector comprises: nozzle 3, needle 4, first body 1, second body 200, vibration exciters 2. Nozzle 3 comprises injection orifice and seat 5 and is coupled with first body 1. Needle 4 comprises first end 6 and is coupled with second body 200. First end 6 in zone of contact with seat 5 makes a valve. Second body 200 may displace in (AB) direction in first body. Exciters 2 generate vibrations of first end 6 and/or nozzle 3 with period τ. Nozzle 3 with body 1 and needle 4 produce with second body 200 first and second acoustic wave propagation media. Every said medium has first and second zones of acoustic impedance breakage. First breakage zone is located at first distance from valve. First breakage zone is located at first distance from valve. Every said distance is selected to make acoustic wave propagation time equals T_i=n_i*[τ/2], where n_i is positive integer multiple other than zero with i=3, 4 for said first and second distances. Invention covers also ICE with said device.

EFFECT: symmetric resonance drive structure, ordered operation of injector.

16 cl, 27 dwg