Cylinder liners for two-stroke opposed-piston internal combustion engines

Abstract

The invention discloses a cylinder liner for a two-stroke opposed-piston internal combustion engine, which comprises an opposed cylinder liner body. The opposed cylinder liner body is provided with two opposed The outer wall of the position between the opposing chambers is provided with an air inlet communicating with it, and the outer wall of the opposing cylinder liner body is provided with an exhaust port communicating with the corresponding opposing chamber; The outer wall of the opposed cavity is provided with an air inlet communicating with the corresponding opposed cavity, and the outer wall of the opposed cylinder body between the two opposed cavities is provided with an exhaust port communicated with it. The cylinder liner has the advantages of high gas exchange quality, can improve the oil-gas mixing effect of the combustion chamber, and can improve efficiency.

Description

technical field [0001] The invention mainly relates to the field of opposed-piston internal-combustion engines, in particular to a cylinder liner for a two-stroke opposed-piston internal-combustion engine. Background technique [0002] The traditional piston-type internal combustion engine includes two-stroke structure and four-stroke structure according to the working stroke. The piston completes a working cycle in two strokes, which is called a two-stroke internal combustion engine. Advanced advantages. [0003] The ventilation methods of two-stroke internal combustion engines include two types: curved flow ventilation and direct ventilation. The lower part of the cylinder is provided with a scavenging port and an exhaust port. The ventilation of the cylinder is realized by the cooperation of the piston and the gas port, thereby simplifying the structure of the internal combustion engine. When the two-stroke internal combustion engine with DC ventilation structure is work...

AI Technical Summary

Problems solved by technology

[0007] The main problems are: first, exhaust interference and increased exhaust resistance, the exhaust gas is not discharged cleanly, there is exhaust gas residue in the cylinder during the exhaust process, the quality of ventilation is poor, and the effect of oil and gas combustion is affected; the second is to reduce the effective efficiency of the cylinder The working volume, reduces the effective compression ratio of the cylinder, weakens the oil-gas mixing effect, reduces the combustion efficiency, and has poor emissions; the third is that the heat load of the piston is relatively high

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