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US 2018/0298842 A1Published application
Cylinder liner for internal combustion engine
AssigneeGM Global Technology Operations LLC
InventorsQigui Wang, Bhuvaneswara R. Dharmavarapu, Cherng-chi Chang
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Abstract
A cylinder liner for an engine block includes a first engine block bonding surface, and a second engine block bonding surface that provides a lower heat transfer coefficient between the cylinder liner and an adjacent engine block material than the first engine block bonding surface. The second engine block bonding surface extends a substantial portion of the axial length of the cylinder liner.
Claims20
A cylinder liner for an engine block, the liner comprising:
- a first engine block bonding surface;
- and
- a second engine block bonding surface that provides a lower heat transfer coefficient between the cylinder liner and an adjacent engine block material than the first engine block bonding surface, and wherein the second engine block bonding surface extends a substantial portion of the axial length of the cylinder liner.
An engine block comprising:
- an engine block material defining a plurality of cylinder bores and an inter-bore section between two of the plurality of cylinder bores;
- and
- a cylinder liner positioned within one of the cylinder bores, wherein the liner includes a first engine block bonding surface, and a second engine block bonding surface oriented adjacent to the inter-bore section that provides a lower heat transfer coefficient between the cylinder liner and the engine block material than the first engine block bonding surface, wherein the second engine block bonding surface extends a substantial portion of the axial length of the cylinder liner.
Dependencies are inferred from the claim text.