Patent ID: 11898516
Assignee: CATERPILLAR INC.
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC F | IPC F

Claim 0:
1. A cylinder head comprising:
a cylinder head casting including an upper surface, a lower surface forming a fire deck, and having formed therein an injector bore defining an injector bore center axis and extending through the cylinder head casting between the upper surface and the lower surface, and four gas exchange openings in the fire deck;
the cylinder head casting further having formed therein a bolt bore defining a bolt bore center axis parallel to the injector bore center axis, and a glow plug bore extending through the cylinder head casting between the upper surface and the lower surface;
the four gas exchange openings are arranged at twelve o'clock, three o'clock, six o'clock, and nine o'clock positions, respectively, circumferentially around the injector bore center axis when viewed from above the cylinder head casting;
the bolt bore originating in the upper surface and terminating at a location inward of the lower surface, and positioned angularly between the twelve o'clock position and the three o'clock position, circumferentially around the injector bore center axis;
the glow plug bore originating in the upper surface and terminating in the lower surface, and positioned angularly between the three o'clock position and the six o'clock position, circumferentially around the injector bore center axis; and
wherein a circle is defined by center axes of each of the four gas exchange openings, and wherein each of the bolt bore and the glow plug bore is within the circle.