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US 11,536,222 B2Granted
Block ribs for reducing liner distortion
AssigneeCummins Inc.
InventorsXiling Zhou, Vijaysai Karuppiah Kumareshan, John Jerl Purcell, III, Mathew A. Clark
Life of this patent
Estimating the term…
Abstract
An engine block includes one or more cylinder bores at least partially surrounded by a cylinder bore wall. The cylinder bore wall includes a liner stop mechanism to support a liner in the cylinder bore. The engine block has an outer cylinder block wall that is exterior to the cylinder bore wall. The outer cylinder block wall includes at least one rib located relative to the liner stop mechanism to reduce rotation and buckling of the liner during operation of the engine.
Claims19
An apparatus, comprising:
- an engine block including a cylinder bore wall defining a cylinder bore that extends from an upper end of the engine block to a lower end of the cylinder bore within the engine block, the cylinder bore wall including a liner stop mechanism that locates and supports a liner with a press fit on the liner stop mechanism in the cylinder bore at a location along a length of the liner, the engine block having an outer cylinder block wall along at least a portion of the cylinder bore wall, the outer cylinder block wall including one or more ribs projecting outwardly from the cylinder block wall, the one or more ribs including an upper surface positioned a first distance above the liner stop mechanism and an opposite lower surface positioned a second distance below the liner stop mechanism, wherein the upper surface is also positioned a third distance below the upper end of the engine block and the lower surface is located above the lower end of the cylinder bore, wherein:
- the length of the liner extends from an upper end of the liner located at the upper end of the engine block to a lower end of the liner located below the lower end of the cylinder bore such that the liner includes an unsupported length extending below the lower end of the cylinder bore;
- and the outer cylinder block wall includes a first wall on one side of the cylinder bore and a second wall on an opposite side of the cylinder bore, and further comprising one or more ribs on each of the first and second walls.
An apparatus, comprising:
- an engine block including a cylinder bore wall defining a cylinder bore that extends from an upper end of the engine block to a lower end of the cylinder bore within the engine block, the cylinder bore wall including a liner stop mechanism that locates and supports a liner with a press fit on the liner stop mechanism in the cylinder bore at a location along a length of the liner, the engine block having an outer cylinder block wall along at least a portion of the cylinder bore wall, the outer cylinder block wall including a first rib projecting outwardly from the cylinder block wall that is located a first distance above the liner stop mechanism and a second rib positioned a second distance below the liner stop mechanism, wherein the first rib is also positioned a third distance below the upper end of the engine block and the second rib is positioned above the lower end of the cylinder bore.
An apparatus, comprising:
- an engine block including a cylinder bore wall defining a cylinder bore that extends from an upper end of the engine block to a lower end of the cylinder bore within the engine block, the cylinder bore wall including a liner stop mechanism that locates and supports a liner with a press fit on the liner stop mechanism in the cylinder bore at a location along a length of the liner, the engine block having an outer cylinder block wall forming a first wall and a second wall along opposite sides of the cylinder bore wall, each of the first and second walls including a single rib projecting outwardly therefrom that spans the liner stop mechanism, each of the ribs forming an upper surface positioned a first minimum distance above the liner stop mechanism and an opposite lower surface positioned a second minimum distance below the liner stop mechanism, wherein the upper surface is also positioned a third distance below the upper end of the engine block and the lower surface is positioned above the lower end of the cylinder bore, wherein:
- the length of the liner extends from an upper end of the liner located at the upper end of the engine block to a lower end of the liner located below the lower end of the cylinder bore such that the liner includes an unsupported length extending below the lower end of the cylinder bore;
- and the outer cylinder block wall includes a first wall on one side of the cylinder bore and a second wall on an opposite side of the cylinder bore, and further comprising a single rib on each of the first and second walls.
Dependencies are inferred from the claim text.