Aluminum alloy slide support member
AssigneeHonda Giken Kogyo Kabushiki Kaisha
InventorsHideaki Ushio, Tadayoshi Hayashi, Kazuo Shibata, Yoshikazu Fujisawa
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Abstract
An aluminum alloy slide support member which is disclosed herein as a cylinder block of an internal combustion engine includes a slide portion, such as the cylinder for slideably supporting the piston, made of a fiber-reinforced aluminum alloy containing at least an alumina fiber as a reinforcing material, wherein the alpha rate of the alumina fiber is set in a range of 10.0 to 50.0% and the volume content of the alumina fiber is set in a range of 8.0 to 20.0%. Another embodiment employs carbon fibers in addition to the alumina fibers. Further, the walls of the cylinder barrel are of a varying thickness to equalize the cooling and cause uniform thermal expansion of the cylinder barrel.
Claims26
An aluminum alloy slide support member in which a slide portion is made of a fiber-reinforced aluminum alloy containing at least an alumina fiber as a reinforcing material, wherein the alpha rate of said alumina fiber is in a range of 10.0 to 50.0% and the volume content of said alumina fiber is set in a range of 8.0 to 20.0%, and wherein said alumina alloy slide support member comprises a cylinder block for an internal combustion engine, and said slide portion comprises an inner wall of a cylinder bore.
An aluminum alloy slide support member in which a slide portion is made of a fiber-reinforced aluminum alloy containing at least an alumina fiber as a reinforcing material, wherein said reinforcing material consists of an alumina fiber and a carbon fiber;
- the alpha rate of said alumina fiber is in a range of 10.0 to 50.00%;
- the volume content of said alumina fiber is at 50.0% or less;
- and the volume content of said carbon fiber is at 20.0% or less, and wherein said aluminum alloy slide support member comprises a cylinder block for an internal combustion engine, and said slide portion comprises an inner wall of a cylinder bore.
An aluminum alloy slide support member comprising a cylinder block of an internal combustion engine having at least one cylinder with an inner wall for slidably supporting a piston, said inner wall having a layer portion formed of a matrix of reinforcing alumina fiber filled with aluminum alloy, and said alumina fiber having an alpha rate in the range of about 10% to 50%.
A slide support member comprising a cylinder block of an internal combustion engine having at least one cylinder with an inner wall for slidably supporting a piston, said inner wall having a layer portion formed of a matrix of reinforcing alumina fiber filled with aluminum alloy, and said cylinder being formed of a cylinder barrel having a wall of varying thickness substantially equalizing the cooling, temperature and thermal expansion throughout the wall for maintaining the cylindrical shape of the cylinder.
Dependencies are inferred from the claim text.