Two-cycle engine cylinder and method for manufacturing the same
AssigneeKawasaki Jukogyo Kabushiki Kaisha
InventorsTsuneyoshi Yuasa, Masanori Kobayashi
Life of this patent
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Abstract
A cylinder block for the two-cycle combustion engine includes a scavenging port open at an inner peripheral surface of the cylinder block so as to orient diagonally upwardly relative to a longitudinal axis of a cylinder bore and defined in the cylinder block in communication with a combustion chamber. This scavenging port is formed by cutting with the rotary cutting tool, then rotated about its own longitudinal axis, from an inner peripheral surface of the cylinder block.
Claims6
A cylinder block for a two-cycle combustion engine comprising a scavenging port open at an inner peripheral surface of the cylinder block so as to orient diagonally upwardly relative to a longitudinal axis of a cylinder bore and defined in the cylinder block in communication with a combustion chamber,
- an open edge of the scavenging port having an upper edge section which includes a flat region at an intermediate portion and at least one inclined region extending diagonally downwardly from one of opposite sides of the flat region to an associated side edge section.
Dependencies are inferred from the claim text.