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US 2021/0010442 A1Published application
Port shapes for enhanced engine breathing
AssigneeCummins Inc.
InventorsRandall L. Zehr, Robert G. Sperry
Life of this patent
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Abstract
A cylinder having at least one intake port and at least one exhaust port, wherein the at least one intake port includes an upper surface and a lower surface, the upper surface of the intake port having an entrance portion and an outlet portion, the upper surface arced from the entrance portion to the outlet portion.
Claims20
A cylinder block, comprising:
- at least one cylinder having at least one intake port and at least one exhaust port,
- wherein the at least one intake port includes an upper surface and a lower surface, the upper surface of the at least one intake port having an entrance portion and an outlet portion, the upper surface being arced from the entrance portion to the outlet portion.
A cylinder, comprising:
- at least one intake port and at least one exhaust port, the at least one exhaust port having an upper surface and a lower surface;
- and
- at least one piston movable within the cylinder,
- wherein the upper surface of the at least one exhaust port is generally U-shaped.
1 more element
A cylinder, comprising:
- at least one intake port and at least one exhaust port;
- wherein the at least one intake port includes an upper surface and a lower surface, the lower surface of the at least one intake port including an entrance portion having a first surface, a transition portion having a second surface, and an exit portion having a third surface, the first surface extending at least one of horizontal and at an angle upward, and the third surface extending at an angle downward, the second surface being positioned between the first surface and the third surface.
Dependencies are inferred from the claim text.