Cycle internal combustion engine capable of implementing constant-volume combustion

Abstract

The present invention discloses an internal combustion engine capable of implementing constant-volume combustion and belongs to the technical field of mechanical engines. The internal combustion engine comprises a cylinder, wherein a piston of the cylinder is connected with a connection rod; the output end of the connection rod is connected with a noncircular gear; a main planetary gear engaged with the noncircular gear is arranged at the output end of the connection rod; a main shaft is fixedly arranged at the center of the main planetary gear and is rotationally connected to a planetary gear disc; the main shaft deviates from the center of the planetary gear disc; a guide shaft parallel to the main shaft is arranged on the planetary gear disc; a guide wheel is arranged on the guide shaft and is in contact with the inner surface or the outer surface of the noncircular gear; the output end of the main shaft is connected with a secondary planetary gear; an inner planetary gear engaged with the secondary planetary gear is arranged at the output end of the main shaft; a power output shaft is connected to the inner planetary gear. The internal combustion engine is capable of implementing constant-volume combustion, improving cycle heat efficiency and implementing large torque output.

Description

technical field [0001] The invention relates to an internal combustion engine, in particular to a constant volume combustion cycle internal combustion engine, which belongs to the technical field of mechanical engines. Background technique [0002] The most widely used internal combustion engine is the crankshaft-piston internal combustion engine. The crankshaft-piston internal combustion engine is a complex reciprocating motion, accompanied by cycloidal motion, that is, cycloidal reciprocating motion. The working cycle of the internal combustion engine is actually a mixed cycle. Its thermal efficiency Between the isovolumic cycle and the isobaric cycle, the various technical improvements on it are still far from the theoretical thermal efficiency of the constant volume cycle, which is determined by the combustion and working methods of the crankshaft piston internal combustion engine , this kind of combustion is accompanied by the downward movement of the piston to a large ...

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Problems solved by technology

[0002] The most widely used internal combustion engine is the crankshaft-piston internal combustion engine. The crankshaft-piston internal combustion engine is a complex reciprocating motion, accompanied by cycloidal motion, that is, cycloidal reciprocating motion. The working cycle of the internal combustion engine is actually a mixed cycle. Its thermal efficiency Between the isovolumic cycle and the isobaric cycle, the various technical improvements on it are still far from the theoretical thermal efficiency of the constant volume cycle, which is determined by the combustion and working methods of the crankshaft piston internal combustion engine , this kind of combustion is accompanied by the downward movement of the piston to a large extent, which is similar to the isobaric combustion cycle. Even until the end of the work, there is still combustion phenomenon, which is discharged together with the exhaust gas, and the heat energy cannot be utilized to the maximum. At the maximum explosion pressure, the crankshaft structure torque The moment arm is very small and cannot output the maximum torque

When the maximum force arm is reached, the piston moves down a lot and the pressure drops a lot, which is still not the maximum output torque. The maximum output torque appears before the rotation to the maximum force arm, and the pressure has not dropped too much. At this time, the product is the largest, which means that it cannot Convert heat energy into kinetic energy output in time, reducing heat utilization efficiency

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