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US 12,523,187 B2Granted
Internal combustion engine and cylinder block
AssigneeIsuzu Motors Limited
InventorYasuhiro Ishikawa
Life of this patent
Estimating the term…
Abstract
An internal combustion engine includes: a cylinder block that includes a cylinder; and a piston that is stored in the cylinder in a manner capable of reciprocating along an axis line of the cylinder, in which the cylinder includes an oval inner circumference portion in which a diameter in a thrust-anti thrust direction is a minor diameter.
Claims4
An internal combustion engine, comprising:
- a cylinder block that includes a cylinder;
- and
- a piston that is stored in the cylinder in a manner capable of reciprocating along an axis line of the cylinder,
- wherein
- the piston contacts an inner surface of the cylinder only through an oil film,
- the inner surface of the cylinder is oval with a minor diameter in a thrust-anti thrust direction, and
- the cylinder includes a perfect-circular inner surface at the point where the piston reaches a top dead center.
4 more elements
A cylinder block, comprising a cylinder that stores therein a piston such that the piston is capable of reciprocating therein,
- wherein an inner surface of the cylinder, which the piston contacts only through an oil film, is oval with a minor diameter in a thrust-anti thrust direction, and
- the cylinder includes a perfect-circular inner surface at the point where the piston reaches a top dead center.
Dependencies are inferred from the claim text.