Power assembly for internal combustion engine with welded-in piston scraper
First Claim
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1. A power assembly for an internal combustion engine, comprising:
- a cylinder having an inner circular wall defining a first inside diameter;
a piston reciprocally housed within the cylinder;
a cylinder head attached to an end of the cylinder; and
a one-piece piston scraper welded to both of said cylinder head and said cylinder, with said piston scraper defining a second inside diameter which is less than said first inside diameter.
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Abstract
A power assembly for an internal combustion engine includes a piston housed within a cylinder, with the cylinder having a welded cylinder head, with the cylinder also including a one-piece piston scraper which is welded to the cylinder head, as well as to the cylinder, with a common weld bead.
10 Citations
18 Claims
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1. A power assembly for an internal combustion engine, comprising:
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a cylinder having an inner circular wall defining a first inside diameter; a piston reciprocally housed within the cylinder; a cylinder head attached to an end of the cylinder; and a one-piece piston scraper welded to both of said cylinder head and said cylinder, with said piston scraper defining a second inside diameter which is less than said first inside diameter. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method for providing a piston deposit scraper at an upper portion of an internal combustion engine power assembly, comprising:
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counterboring an upper portion of a cylinder; counterboring a lower portion of a cylinder head, whereby the counterbore formed in the cylinder head and the counterbore formed in the cylinder are contiguous; placing a cylindrical scraper sleeve in the counterbored portions of said cylinder and said cylinder head; placing said cylinder head in contact with said cylinder; and welding said scraper sleeve to said cylinder and to said cylinder head. - View Dependent Claims (12, 13)
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14. A power assembly for an internal combustion engine, comprising:
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a cylinder having an inner circular wall defining a first inside diameter; a piston reciprocally housed within the cylinder, with said piston having a top land; a cylinder head attached to an end of the cylinder; a one-piece, cylindrical scraper sleeve mounted within a counterbore defined by separate counterbores formed in the cylinder and cylinder head; and a common weld bead circumscribing the periphery of the cylinder, with said weld bead joining said scraper sleeve to both said cylinder head and said cylinder. - View Dependent Claims (15, 16, 17, 18)
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Specification