Patent ID: 11959447
Assignee: CUMMINS INC.
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC F | IPC F

Claim 0:
1. An apparatus for fuel injection, comprising:
an inner sac with at least one spray hole disposed on an inner surface of the apparatus, the at least one spray hole leading to a fuel passage longitudinally extending therefrom toward an outer surface of the apparatus;
at least one counterbore extending partially between the outer surface of the apparatus and the sac and fluidly coupled with the sac via the fuel passage;
at least one air entrainment hole extending from the outer surface of the apparatus toward the fuel passage; and
at least one air passage with a first end and a second end, the at least one air passage fluidly coupling the at least one counterbore and the at least one air entrainment hole, wherein the at least one air passage extends from the first end at a corner of the at least one air entrainment hole where there is high pressure to the second end at a corner of the at least one counter bore where there is low pressure so that air is pulled through the at least one entrainment hole into the at least one counterbore.