COAXIAL SPRAY INJECTOR Russian patent published in 2013 - IPC F02K9/52 

FIELD: engines and pumps.

SUBSTANCE: coaxial-spray injector includes a housing with a hollow tip, in the outlet part of which there are radially located slots made in the form of alternating projections and cavities and attaching the oxidiser cavity to combustion zone, a sleeve enveloping the tip with a gap and connecting the main fuel cavity to combustion zone. Radially located slots are made so that perimetre of central part of the jet, which is restricted with beam generatrixes, is not more than 3s, and beam length is 2.3…2.5s, where s is beam thickness; number of beams is equal to three. In the sleeve between projections of the tip there are channels, the outlet part of which opens to a cavity made in the sleeve housing, and the inlet part is connected to the additional fuel cavity. The above cavity in the sleeve housing is connected through tangential channels to an annular groove made on the sleeve end and connected to combustion zone.

EFFECT: improving completeness of mixture formation.

3 dwg