Energy saving piston

Abstract

The invention discloses an energy-saving piston. The energy-saving piston comprises a piston head portion and a piston skirt portion. The piston head portion comprises a platform and a protrusion located on the platform. The protrusion comprises a first side face, a second side face, a third side face and a fourth side face. The included angle between the first side face and the platform is 30 degrees. The included angle between the second side face and the platform is 35 degrees. The third side face is matched with the inner wall of a combustor. The fourth side face corresponds to a sparking plug. The compression ratio of mixed gas in the combustor is improved, airflow thrust resolution generated by mixed gas combustion is reduced, the overall strength of the piston is improved by means of the platform and the protrusion which are integrally cast, the wall thickness of the piston head portion is limited, the weight of the piston is reduced, reciprocating motion inertia of the piston is reduced, stability is improved in the motion process of the piston, and energy consumption of a single-cylinder four-stroke motorcycle using the energy-saving piston is reduced by 10%-31%.

Description

technical field [0001] The invention relates to a piston, in particular to a piston for a single-cylinder four-stroke motorcycle. Background technique [0002] With the continuous rise of energy prices, rising oil prices, and deteriorating social environment, energy conservation and emission reduction have become an important goal of the development of modern society. Motorcycles have played an important role in people's study, work and life, but fuel-powered motorcycles Cars use gasoline combustion to push the piston to work, convert heat energy into kinetic energy, and drive the motorcycle forward. Gasoline is discharged after incomplete combustion in the combustion chamber, resulting in energy consumption and serious environmental pollution. At present, the piston for a single-cylinder four-stroke motorcycle is installed in the cylinder head and consists of a piston head and a piston skirt. For a single-cylinder four-stroke motorcycle with a side-mounted valve, the pisto...

AI Technical Summary

Problems solved by technology

When the piston head is a platform, the volume of the combustion chamber space is too large, the compression ratio is small, and the fuel consumption increases; when the piston head is arched, when the airflow generated by the combustion of the mixed gas pushes the piston head, the airflow direction follows the arch The shape changes, the thrust is decomposed, and it cannot be well acted on the piston head, resulting in insufficient combustion of the mixed gas in the combustion chamber. If the compression ratio is increased blindly, although the combustion effect is improved, correspondingly, the thermal engine noise of the cylinder head will be generated. Abnormal noise

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