Engine block for an internal combustion engine
AssigneeGM Global Technology Operations LLC
InventorsAsok K. Sethy, Abhishek Kumar Sahu
Life of this patent
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Abstract
The present disclosure provides a cylinder block for an internal combustion engine having a first cylinder, a first cylinder sleeve, a second cylinder, and a second cylinder sleeve. The first cylinder defines a first cylindrical wall while the second cylinder defines a second cylindrical wall. The first cylinder sleeve lines the first cylindrical wall while the second cylinder sleeve lines the second cylindrical wall. Each of the first and the second cylinder sleeves define a thrust sleeve region, an anti-thrust sleeve region opposite the thrust sleeve region, and a pair of Siamese regions. The outer wall of each of the first and second cylinder sleeves progressively widens toward the top sleeve surface of each of the first and second cylinder sleeves.
Claims14
A cylinder block of an internal combustion engine comprising:
- a first cylinder having a first cylindrical wall;
- a first cylinder sleeve lining the first cylindrical wall having a top sleeve surface and a bottom sleeve surface;
- a second cylinder having a second cylindrical wall;
- and
- a second cylinder sleeve lining the second cylindrical wall, the second cylinder sleeve including a top sleeve surface portion and a bottom sleeve surface portion, each of the first and the second cylinder sleeves having an inner wall and an outer wall which define a thrust sleeve region, an anti-thrust sleeve region opposite the thrust sleeve region, and a pair of Siamese regions;
- wherein the inner and outer walls for each of the first and second cylinder sleeves being substantially co-cylindrical within the first cylinder and the second cylinder respectively, and each top sleeve surface and the top sleeve surface portion are configured to accommodate at least part of a head gasket, and
- wherein the outer wall of each of the first and second cylinder sleeves progressively, widens along longitudinal axis from corresponding ones of the bottom sleeve surface and the bottom sleeve surface portion toward a top sleeve surface and top sleeve surface portion, wherein each of the first and second cylinder sleeves has a non-uniform thickness defined by a first thickness at the top sleeve surface portion that tapers to a second thickness at the bottom sleeve surface portion in the thrust region and the anti-thrust region and a third thickness, that is less than the first thickness, at the top sleeve surface portion that tapers to a fourth thickness at the bottom sleeve surface portion in each of the Siamese regions.
Dependencies are inferred from the claim text.