Cylinder Liner And Internal Combustion Engine
AssigneeKS Kolbenschmidt GmbH
InventorWolfgang Hanke
Life of this patent
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Abstract
A cylinder liner (8) for an internal combustion engine (7), comprising a middle axis (9), and an inner surface (11) running around the middle axis (9). The inner surface (11) comprises a first zone (21), and a second zone (22), which differs from the first zone. The first zone (21) comprises a reduced peak height Rpk of less than 0.2 μm, a core roughness depth Rk of 0.05 to 0.35 μm and a reduced groove depth Rvk of 1.5 to 2.5 μm. The second zone (22) comprises a reduced peak height Rpk of less than 0.2 μm, a core roughness depth Rk of 0.05 to 0.35 μm and a reduced groove depth Rvk of 0.5 to 2.5 μm.
Claims20
Cylinder liner for use in an internal combustion engine, the cylinder liner comprising:
- a middle axis, and
- an inner surface running around the middle axis,
- wherein the inner surface comprises a first zone, which runs around the middle axis, and a second zone, which runs around the middle axis,
- wherein the first zone and the second zone are arranged next to each other when viewed along the middle axis,
- wherein the first zone comprises a reduced peak height Rpk of less than 0.2 μm, a core roughness depth Rk of 0.05 to 0.35 μm and a reduced groove depth Rvk of 1.5 to 2.5 μm, and
- wherein in the second zone the reduced peak height Rpk is less than 0.2 μm, the core roughness depth Rk is 0.05 to 0.35 μm and the reduced groove depth Rvk is 0.5 to 2.5 μm.
Dependencies are inferred from the claim text.