Combined piston gas ring internal combustion engine

Abstract

Disclosed is combination type internal-combustion piston engine, wherein the air ring groove of the piston is provided with an upper auxiliary torsion air ring and a lower main air ring. The invention realizes simplified structure and manufacturing process, low cost, better hermeticity and thermal conductance, and reduced discharge of engine contaminant.

Description

Technical field [0001] The invention relates to a combined piston gas ring internal combustion engine, in particular to an internal combustion engine which adopts a combined piston gas ring gas sealing system composed of an upper auxiliary twisted gas ring and a lower main gas ring in the same gas ring groove on the piston of the internal combustion engine. Background technique [0002] At present, the main function of the gas ring on the piston of the known internal combustion engine is gas sealing and heat conduction, that is, to ensure the sealing of the piston and the cylinder wall, to prevent the combustible gas mixture and high-temperature gas in the cylinder from leaking into the crankcase, and to absorb the heat received by the top of the piston. The heat is transferred to the cylinder wall to avoid overheating of the piston. If the seal is not good, not only the internal combustion engine will be difficult to start, the power will decrease, and the consumption of fue...

AI Technical Summary

Problems solved by technology

[0002] At present, the main function of the gas ring on the piston of the known internal combustion engine is gas sealing and heat conduction, that is, to ensure the sealing of the piston and the cylinder wall, to prevent the combustible gas mixture and high-temperature gas in the cylinder from leaking into the crankcase, and to absorb the heat received by the top of the piston. The heat is transferred to the cylinder wall to avoid overheating of the piston. If the seal is not good, not only the internal combustion engine will be difficult to start, the power will decrease, and the consumption of fuel and oil will increase.

And the outer surface of the piston ring is not closely attached to the cylinder wall, so that the heat at the top of the piston cannot be transferred through the cylinder wall, resulting in excessive temperature of the piston ring and piston or even being burned out. The piston gas sealing rings currently used are all single Body gas sealing ring, which cannot meet the strengthening requirements of internal combustion engines, and the overall requirements of good sealing, running-in, contact pressure, thermal conductivity, economy and manufacturability

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