Patent ID: 11859576
Assignee: PROGRESS RAIL LOCOMOTIVE INC.
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC F | IPC F

Claim 8:
9. A cylinder head comprising:
a cylinder head casting including a top deck surface, a fire deck, and a middle deck, and the cylinder head casting having formed therein a coolant cavity extending around an exhaust conduit and an intake conduit each extending through the fire deck, and an injector bore;
the injector bore defining a bore center axis, and including an upper bore section formed by an injector well extending downwardly from the top deck surface to the coolant cavity, a sleeve tip hole extending through the fire deck, and a middle bore section formed in the middle deck;
the fire deck including an upward facing fire deck surface extending circumferentially around the sleeve tip hole;
the middle deck further including an upward facing middle deck surface located axially between the upward facing fire deck surface and the injector well; and
the upward facing middle deck surface extending circumferentially around the bore center axis and having therein a plurality of discontinuities forming a plurality of closed-channel coolant feed openings connecting between the middle bore section and the coolant cavity; and
the exhaust conduit and the intake conduit extend respectively to an exhaust opening and an intake opening in the fire deck, and the plurality of closed-channel coolant feed openings each extend to a different one of the exhaust opening and the intake opening.