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US 11,112,009 B2Granted
Low heat transfer piston via binder jet technology
AssigneeCummins Inc.
InventorDavid M. Barnes
Life of this patent
Estimating the term…
Abstract
A piston for an internal combustion engine includes a skirt and a crown coupled to the skirt. The crown is produced in isolation from the skirt using an additive manufacturing process. The piston includes a first air gap between the crown and the skirt. According to an example embodiment, the crown includes a plurality of sections produced in isolation from the skirt. The crown may include a second air gap disposed between two of the plurality of sections.
Claims18
A piston, comprising:
- a skirt;
- and
- a crown sintered to the skirt, the crown produced in isolation from the skirt using an additive manufacturing process, the piston including a first air gap between the crown and the skirt.
An internal combustion engine, comprising:
- a cylinder block defining a cavity;
- a cylinder head coupled to an upper end of the cylinder block and covering the cavity;
- a piston at least partially disposed within the cavity, the piston comprising:
- a skirt;
- and
- a crown sintered to the skirt, the crown produced in isolation from the skirt using an additive manufacturing process, the piston including a first air gap between the crown and the skirt.
3 more elements
A method, comprising:
- forming a skirt using an additive manufacturing process;
- forming a crown in isolation from the skirt using the additive manufacturing process, at least one of the skirt or the crown comprising a recessed area;
- positioning crown onto the skirt such that the recessed area is disposed therebetween;
- and
- sintering the crown to the skirt.
2 more elements
Dependencies are inferred from the claim text.