Piston cylinder system and method
A system includes a block having a cylinder, a cylinder head, a cylinder liner, and a gasket. The cylinder liner includes a recess formed into a top surface of the cylinder liner. The cylinder liner is configured to line the cylinder about a piston. The gasket is disposed in the recess between the cylinder head and the cylinder liner. The recess includes a bottom surface. At least a portion of the bottom surface includes a tapered portion and a depth of the tapered portion increases along an inward radial direction of the cylinder liner.
1 . A system, comprising:
a block having a cylinder;
a cylinder head;
a cylinder liner comprising a recess formed into a top surface of the cylinder liner, wherein the cylinder liner is configured to line the cylinder about a piston; and
a gasket disposed in the recess between the cylinder head and the cylinder liner, wherein a bottom surface of the gasket is orthogonal to a central axis of the gasket, and the bottom surface extends from an inner radial surface of the gasket to an outer radial surface of the gasket;
wherein the recess comprises an additional bottom surface, the additional bottom surface comprises:
a flat portion configured to engage the bottom surface of the gasket; and
a tapered portion, wherein the tapered portion is tapered relative to the bottom surface;
wherein a gap is defined by the bottom surface and the tapered portion.
2 . The system of claim 1 , wherein the recess extends to an additional inner radial surface of the cylinder liner.
3 . The system of claim 2 , wherein a ratio between a radial width of the tapered portion and a radial width of the recess is at least 1:2.
4 . The system of claim 3 , wherein a ratio between the radial width of the recess and a radial width of the top surface of the cylinder liner is at least 3:5.
5 . The system of claim 3 , wherein a ratio of the depth of the recess at the additional inner radial surface and the radial width of the recess is less than 1:50.
6 . The system of claim 3 , wherein a ratio of a radial width of the flat portion to the radial width of the recess is less than 1:2.
7 . The system of claim 1 , wherein the cylinder liner comprises an overhang portion disposed on an outer radial side of the cylinder liner, and the top surface of the cylinder is configured to contact a bottom surface of the overhang portion.
8 . The system of claim 7 , wherein the cylinder liner comprises a channel at an intersection of the bottom surface of the overhang portion and an additional outer radial surface of the cylinder liner.
9 . The system of claim 1 , wherein the gasket is comprised of steel.
10 . The system of claim 1 , wherein a radial cross-section of the gasket is rectangular in shape, wherein a thickness of the gasket is uniform from the inner radial surface to the outer radial surface.
11 . The system of claim 1 , wherein an additional top surface of the gasket and the bottom surface are parallel to one another.
12 . The system of claim 1 , wherein the gap is axially disposed between the bottom surface and the tapered portion.
13 . The system of claim 1 , wherein a width of the gap is defined by a distance from the bottom surface to the tapered portion, and the width varies along a radial direction of the cylinder liner.
14 . The system of claim 13 , wherein the width increases along a radially inward direction of the cylinder liner.
15 . A system, comprising:
a cylinder liner comprising a recess formed into a top surface of the cylinder liner, wherein the cylinder liner is configured to line a cylinder about a piston; and
a gasket disposed in the recess, wherein a bottom surface of the gasket is orthogonal to a central axis of the gasket, and the bottom surface extends from an inner radial surface of the gasket to an outer radial surface of the gasket;
wherein the recess comprises an additional bottom surface, the additional bottom surface comprises:
a flat portion configured to engage the bottom surface of the gasket; and
a tapered portion, wherein the tapered portion is tapered relative to the bottom surface;
wherein a gap is defined by the bottom surface and the tapered portion.
16 . The system of claim 15 , wherein a ratio between a radial width of the tapered portion and a radial width of the recess is at least 1:2.
17 . The system of claim 16 , wherein a ratio between the radial width of the recess and a radial width of the top surface of the cylinder liner is at least 3:5.
18 . The system of claim 16 , wherein a ratio of the depth of the recess at the inner radial surface and the radial width of the recess is less than 1:50.
19 . The system of claim 16 , wherein a ratio of a radial width of the flat portion to the radial width of the recess is less than 1:2.
20 . A method, comprising:
inserting a gasket into a recess formed into a top surface of a cylinder liner, wherein the cylinder liner is configured to line a cylinder about a piston, wherein a bottom surface of the gasket is orthogonal to a central axis of the gasket, and the bottom surface extends from an inner radial surface of the gasket to an outer radial surface of the gasket;
mounting a cylinder head over the gasket and a top portion of the cylinder liner; and
applying a clamp load to the cylinder head, wherein at least a portion of the clamp load is transmitted through an outer radial portion of the gasket to the cylinder;
wherein the recess comprises an additional bottom surface, the additional bottom surface comprises:
a flat portion configured to engage the bottom surface of the gasket; and
a tapered portion, wherein the tapered portion is tapered relative to the bottom surface;
wherein a gap is defined by the bottom surface and the tapered portion.