Variable gas distribution phase mechanism for opposed-piston engine

Abstract

The invention discloses a variable gas distribution phase mechanism for an opposed-piston engine, and belongs to the technical field of internal combustion engine structures. The variable gas distribution phase mechanism comprises an air cylinder sleeve, an air inlet slide sleeve, an air outlet slide sleeve, an air inlet connecting rod, an air outlet connecting rod and an adjustable crank, wherein the air cylinder sleeve is provided with a plurality of layers of air ports; the number of the air port layers on the air cylinder sleeve corresponds to the relevant engine rotation speed, namely the air port adjusting type is adjusted by different shifts. The variable gas distribution phase mechanism consists of two crank slide block mechanisms in series; the adjustable crank is adjusted to drive the slide sleeves to move under the actions of the air inlet connecting rod and the air outlet connecting rod, so as to switch the number of air port layers in different shifts. The variable gas distribution phase mechanism has the advantages that the average effective pressure and the gas changing characteristic of the opposed-piston engine can reach the optimum state under various working conditions; the cost is reduced, and the system reliability is improved.

Description

technical field [0001] The invention relates to a variable valve phase mechanism of an internal combustion engine, in particular to a variable valve phase mechanism of an opposed piston engine, and belongs to the technical field of internal combustion engine structures. Background technique [0002] With the intensification of energy crisis and environmental pressure, engine energy conservation, emission reduction and light weight have become important ways to further improve it. The traditional four-stroke engine is difficult to further improve due to the increase of post-processing equipment, while the opposed-piston engine has the characteristics of thermal efficiency and light weight, and has attracted further attention. However, the emission performance of the traditional opposed-piston engine is very poor, and the organization of combustion is also relatively difficult. Opposed-piston engines combine today's engine technologies such as high-pressure injection and turb...

AI Technical Summary

Problems solved by technology

On the opposed four-stroke piston engine, there is only a sliding cylinder liner type variable valve timing mechanism developed by Pinnacle Company of the United States. When working, it is opened by a fork-type cam mechanism, and then locked by a spring return. The mechanism is relatively complicated, which puts forward higher requirements for lubrication and sealing.

This mechanism cannot meet the requirements of the opposed two-stroke engine for the scavenging process, so it cannot be applied to the opposed two-stroke engine

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