Visual combustion chamber capable of flexibly adjusting flow-pressure wave-combustion interaction

Abstract

The invention discloses a visual combustion chamber capable of flexibly adjusting flow-pressure wave-combustion interaction. The visual combustion chamber comprises a glass gasket and a cylinder cover which are arranged on the top part of a cylinder sleeve from bottom to top. A cylinder cover glass view window is inlaid on the cylinder cover. A piston in the cylinder sleeve comprises a metal piston ring matched with the cylinder sleeve. A piston glass view window is inlaid on the top end of the metal piston ring. The lower end surface of cylinder cover, the inner side of the glass gasket, the inner side of the cylinder sleeve, the metal piston ring and the upper end surface of the piston glass view window form a closed combustion chamber body. A vertical air inlet channel is formed in the cylinder cover. A horizontal air inlet / outlet channel is formed in the top part of the cylinder sleeve. The horizontal air inlet / outlet channel is tangential to the revolution surface of the inner cavity of the cylinder sleeve. Two pressure wave inlets consistent in inlet direction, tangential to the revolution surface of the inner cavity of the cylinder sleeve and arranged on the same horizontal plane. According to the invention, the flow field state and the pressure wave propagation and superposition mode can be flexibly adjusted, and optical testing can be carried out on the complete combustion process in the cylinder.

Description

technical field [0001] The invention belongs to an optical test device for studying the combustion process in a gasoline engine cylinder, which is mainly used for studying the flame propagation and the spontaneous combustion process of unburned gas at the end under different flow states in the cylinder, different pressure wave intensities and superposition modes, and belongs to the combustion technology of internal combustion engines field. Background technique [0002] Gasoline engine miniaturization and strengthening technology combined with air intake supercharging is currently one of the most efficient means to improve the thermal efficiency of internal combustion engines and reduce carbon dioxide emissions. However, with the increase of the strengthening degree, abnormal combustion phenomena such as knocking and early combustion appear, which will cause severe pressure shocks in the cylinder, resulting in deterioration of engine efficiency and even damage to the mechani...

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Problems solved by technology

The fast compressor can observe the self-ignition process of the gas well, and the interaction between the pressure wave and the flame, but it is difficult to carry out the study of flow-to-combustion due to the lack of an air intake system

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