Internal combustion engine with cylinder insert
DCFirst Claim
1. An internal combustion engine including:
- an engine block having a head seat surface and a cylinder opening extending from the head seat surface into an interior of the engine block, the cylinder opening having a cylinder opening surface, and a cylinder opening cylindrical wall that is cylindrical about a longitudinally extending cylindrical axis and has a wall upper surface located at a recess depth below the head seat surface, the cylinder opening wall having a cylinder opening inner cylindrical diameter and a cylinder opening outer dimension such that there is a gap between the cylinder opening cylindrical wall and the cylinder opening surface; and
a cylinder insert residing within the cylinder opening and having an insert upper surface substantially flush with the head seat surface of the engine block, the cylinder insert comprising a smooth cylindrical inner surface with a longitudinally extending cylindrical axis, and a stepped outer surface formed of three longitudinal regions, the three longitudinal regions including a first longitudinal region adjacent to the insert upper surface and having a first wall thickness, a second longitudinal region remote from the first longitudinal region and having a second wall thickness less than the first wall thickness, the second longitudinal region being received within the inner cylindrical diameter of the cylinder opening wall, and a third longitudinal region intermediate between and continuous with the first longitudinal region and the second longitudinal region, the third longitudinal region having a third wall thickness intermediate between the first wall thickness and the second wall thickness.
2 Assignments
Litigations
0 Petitions
Accused Products
Abstract
An internal combustion engine includes an engine block having a head seat surface and a cylinder opening extending from the head seat surface into an interior of the engine block, and a cylinder insert residing within the cylinder opening and having an insert upper surface substantially flush with the head seat surface of the engine block. The cylinder insert has a smooth cylindrical inner surface with a longitudinally extending cylindrical axis, and a stepped outer surface formed of three longitudinal regions. The three longitudinal regions include a first longitudinal region adjacent to the insert upper surface and having a first wall thickness, a second longitudinal region remote from the first longitudinal region and having a second wall thickness less than the first wall thickness, and a third longitudinal region intermediate between and continuous with the first longitudinal region and the second longitudinal region. The third longitudinal region has a third wall thickness intermediate between the first wall thickness and the second wall thickness.
16 Citations
20 Claims
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1. An internal combustion engine including:
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an engine block having a head seat surface and a cylinder opening extending from the head seat surface into an interior of the engine block, the cylinder opening having a cylinder opening surface, and a cylinder opening cylindrical wall that is cylindrical about a longitudinally extending cylindrical axis and has a wall upper surface located at a recess depth below the head seat surface, the cylinder opening wall having a cylinder opening inner cylindrical diameter and a cylinder opening outer dimension such that there is a gap between the cylinder opening cylindrical wall and the cylinder opening surface; and
a cylinder insert residing within the cylinder opening and having an insert upper surface substantially flush with the head seat surface of the engine block, the cylinder insert comprising a smooth cylindrical inner surface with a longitudinally extending cylindrical axis, and a stepped outer surface formed of three longitudinal regions, the three longitudinal regions including a first longitudinal region adjacent to the insert upper surface and having a first wall thickness, a second longitudinal region remote from the first longitudinal region and having a second wall thickness less than the first wall thickness, the second longitudinal region being received within the inner cylindrical diameter of the cylinder opening wall, and a third longitudinal region intermediate between and continuous with the first longitudinal region and the second longitudinal region, the third longitudinal region having a third wall thickness intermediate between the first wall thickness and the second wall thickness. - View Dependent Claims (2, 3, 4, 5, 6, 10, 13)
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7. An internal combustion engine including:
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an engine block having a head seat surface and a cylinder opening extending from the head seat surface into an interior of the engine block, the cylinder opening having a cylinder opening surface, and a cylinder opening cylindrical wall that is cylindrical about a longitudinally extending cylindrical axis and has a wall upper surface located at a recess depth below the head seat surface, the cylinder opening wall having a cylinder opening inner cylindrical diameter and a cylinder opening outer dimension such that there is a gap between the cylinder opening cylindrical wall and the cylinder opening surface; and
a cylinder insert residing within the cylinder opening and having an insert upper surface substantially flush with the head seat surface of the engine block, the cylinder insert comprising a smooth cylindrical inner surface that is cylindrical about the longitudinally extending cylindrical axis, and a stepped outer surface formed of three longitudinal regions, the outer surface including a first longitudinal region adjacent to the insert upper surface and having a first wall thickness such that the first longitudinal region contacts the cylinder opening surface, a second longitudinal region remote from the first longitudinal region and having a second wall thickness less than the first wall thickness, the second longitudinal region being received within the cylinder opening inner wall, a third longitudinal region intermediate between and continuous with the first longitudinal region and the second longitudinal region, the third longitudinal region having a third wall thickness intermediate between the first wall thickness and the second wall thickness, and a support shoulder between the second longitudinal region and the third longitudinal region, the support shoulder resting upon the wall upper surface. - View Dependent Claims (8, 9, 11, 12)
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14. An internal combustion engine including:
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an engine block having a head seat surface and a cylinder opening extending from the head seat surface into an interior of the engine block, the cylinder opening having a cylinder opening surface, and a cylinder opening cylindrical wall that is cylindrical about a longitudinally extending cylindrical axis and has a wall upper surface located at a recess depth below the head seat surface, the cylinder opening wall having a cylinder opening inner cylindrical diameter and a cylinder opening outer dimension such that there is a gap between the cylinder opening cylindrical wall and the cylinder opening surface; and
a cylinder insert residing within the cylinder opening and having an insert upper surface substantially flush with the head seat surface of the engine block, the cylinder insert comprising a smooth cylindrical inner surface that is cylindrical about the longitudinally extending cylindrical axis, and a stepped outer surface formed of three longitudinal regions, the outer surface including a first longitudinal region adjacent to the insert upper surface and having a first wall thickness such that the first longitudinal region contacts the cylinder opening surface, a second longitudinal region remote from the first longitudinal region and having a second wall thickness less than the first wall thickness, the second longitudinal region being received within the cylinder opening inner wall, a third longitudinal region intermediate between and continuous with the first longitudinal region and the second longitudinal region, the third longitudinal region having a third wall thickness intermediate between the first wall thickness and the second wall thickness, and a support shoulder between the second longitudinal region and the third longitudinal region, the support shoulder resting upon the wall upper surface, wherein the gap serves as a water-cooling jacket extending over a length of the second longitudinal region and a length of the third longitudinal region. - View Dependent Claims (15, 16, 17, 18, 19, 20)
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Specification