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US 10,294,885 B2Granted
Cylinder liner for an internal combustion engine
AssigneesMahle Metal Leve S/A, Mahle International GmbH
InventorsRafael Bettini Rabello, Edney Deschauer Rejowski
Life of this patent
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Abstract
A cylinder liner for an internal combustion engine may include a hollow cylindrical body. The body may include an internal surface having a longitudinal/axial length. The internal surface may be divided into at least two portions along the longitudinal/axial length. The at least two portions may respectively include a specific value of roughness and a predefined length.
Claims18
A cylinder liner for an internal combustion engine, comprising:
- a hollow cylindrical body with an internal surface having a longitudinal/axial length, the internal surface divided into at least two portions along the longitudinal/axial length;
- wherein the at least two portions comprises a first portion and a second portion;
- wherein the at least two portions respectively include a specific value of roughness and a predefined length;
- wherein the specific value of roughness of the first portion includes values of up to 0.30 Rpk, between 0.40 and 1.50 Rk, and between 1.10 and 2.80 Rvk;
- and
- wherein the specific value of roughness of the second portion includes values of up to 0.30 Rpk, up to 0.40 Rk, and between 0.30 and 1.00 Rvk.
3 more elements
A cylinder liner for an internal combustion engine, comprising:
- a hollow cylindrical body defining an internal surface having a longitudinal/axial length, the internal surface including a plurality of portions divided along the longitudinal/axial length, the plurality of portions including:
- a first portion disposed proximate to a region corresponding to a top dead centre position of a piston stroke, the first portion having a first specific value of roughness and a first predefined length;
- a second intermediate portion having a second specific value of roughness and a second predefined length;
- and
- a third portion disposed remote to the region corresponding to the top dead centre position in relation to the first portion and the second intermediate portion, the third portion including a third specific value of roughness and a third predefined length;
- wherein the first specific value of roughness differs from at least one of the second specific value of roughness and the third specific value of roughness;
- wherein the first specific value of roughness of the first portion includes values of up to 0.30 Rpk, between 0.40 and 1.50 Rk, and between 1.10 and 2.80 Rvk;
- and
- wherein the second specific value of roughness of the second portion includes values of up to 0.30 Rpk, up to 0.40 Rk, and between 0.30 and 1.00 Rvk.
6 more elements
Dependencies are inferred from the claim text.