Piston type internal combustion engine
OwnerNobuya TAKAHARAinventor
Life of this patent
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Abstract
An internal combustion engine includes a cylinder of which the interior is divided into two in the longitudinal direction. The lower chamber serves as a mechanical driving portion in which the piston is reciprocated. The upper chamber serves as a power portion in which combustion gas is drawn in, compressed, burned and exhausted. A cylindrical portion with a lid which moves into the power portion is continuously provided on top of the piston. A gap is defined between the cylindrical portion and the inner peripheral surface of the power portion of the cylinder. The inner peripheral surface of the power portion is defined by a heat shield tube fitted in the cylinder. A heat insulating tube is provided on the outer periphery of the heat shield tube.
Claims2
A piston type internal combustion engine comprising a cylinder, a piston slidably mounted in the cylinder, a connecting rod through which the piston is coupled to the crankshaft, and intake and exhaust valves,
- wherein the cylinder has an interior space which is divided into a lower driving portion in which the piston is mechanically driven, and an upper power portion in which combustion gas is sucked, compressed, burned and expanded, and exhausted,
- wherein the engine further comprises a cylindrical portion having a lid portion and mounted on a top portion of the piston so as to extend into the power portion with the lid portion facing a top portion of the cylinder, and
- wherein a gap is defined between the cylindrical portion and an inner peripheral surface of the power portion of the cylinder.
Dependencies are inferred from the claim text.