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US 2021/0148302 A1Published application
Engine cylinder liner with liner catcher
AssigneeTransportation IP Holdings, LLC
InventorKotha Ramesh Kumar
Life of this patent
Estimating the term…
Abstract
Systems and methods are provided for a cylinder liner for an engine including a catcher feature on a side surface to provide radial support and improved coolant sealing. In one example, the catcher feature may include a continuous stepped catcher extending from the cylinder liner body and a stepped tab of the engine block, the stepped catcher resting on the stepped tab. Also, a radial flange in the upper portion of the cylinder liner may be coupled to the engine block, the coupling sealed via an O-ring nestled in a groove formed in the radial flange.
Claims23
A system, comprising:
- an engine block, comprising:
- a stepped tab having a first wall with a first diameter, a second wall with a second diameter which is less than the first diameter, the second wall extending inward towards a cylinder liner, and an angled shoulder between the first wall and the second wall;
- and
- a cylinder liner, comprising:
- a hollow cylindrical body with an upper end and a lower end, the cylindrical body configured to surround a combustion chamber defined by a cylinder bore in the engine block;
- a continuous radial flange extending from the cylindrical body at the upper end, the flange configured to rest on a depression formed on the engine block;
- and
- a continuous stepped catcher of the cylindrical body at a location closer to the lower end than the upper end, the stepped catcher comprising a first portion with a diameter matching the first diameter of the first wall and a second portion with a diameter matching the second diameter of second first wall, and an angled step connecting the first portion and the second portion of the stepped catch, the angled step configured to rest on the stepped tab.
5 more elements
(canceled)
(canceled)
A system, comprising:
- an engine block, comprising:
- a stepped tab having a first wall with a first diameter, a second wall with a second diameter which is less than the first diameter, the second wall extending inward towards a cylinder liner, and an angled shoulder between the first wall and the second wall;
- and
- a cylinder liner, comprising:
- a liner body;
- a radial flange extending circumferentially from an upper end of the liner body and configured to engage an upper surface of the cylinder bore;
- and
- a stepped element extending circumferentially from the liner body, the stepped element comprising a first portion with a diameter matching the first diameter of the first wall and a second portion with a diameter matching the second diameter of second first wall, and an angled step connecting the first portion and the second portion of the stepped element, the angled step configured to engage the angled shoulder of the engine block, and the stepped element of the liner located axially below the flange.
5 more elements
(canceled)
A system, comprising:
- an engine block including a cylinder bore, the engine block comprising:
- a stepped tab having a first wall with a first diameter, a second wall with a second diameter which is less than the first diameter, the second wall extending inward towards a cylinder liner, and an angled shoulder between the first wall and the second wall;
- a coolant passage in the engine block configured to circulate coolant around the cylinder bore;
- and
- a cylinder liner disposed in the bore, the cylinder liner comprising:
- a flange extending radially along a circumference of an upper end of the cylinder bore, the flange engaging a surface of the engine block;
- and
- a stepped catcher extending around an inner surface of the bore axially below the flange, the stepped catcher including an upper step with a diameter matching the first diameter of the first wall and a lower step with a diameter matching the second diameter of second first wall, the upper step extending further outwards than the lower step, and an angled step connecting the upper step and the lower step, the upper step engaging the first wall of the engine block and the angled step engaging the angled shoulder of the engine block when the cylinder liner moves downward into the cylinder bore.
5 more elements
Dependencies are inferred from the claim text.