Rotary jet combustion system of ignition chamber type engine

Abstract

The invention discloses a rotary jet combustion system of an ignition chamber type engine. The system comprises an air cylinder, a piston and a cylinder cover. A space encircled by the air cylinder, the piston and the cylinder cover forms a main combustion chamber, at least one ignition chambers are mounted on the cylinder cover, each ignition chamber is composed of a shell and an inner cavity ina shell cover, an ignition device and a fuel supply device are mounted on the shell cover, the ignition chambers communicate to the main combustion chamber through a plurality of channels, and an engine working medium flows between the ignition chambers and the main combustion chamber of the engine by means of the channels. The channels are of cone-shaped structures, and the cross sections of thecone-shaped structures are gradually reduced from the ignition chamber ends to the main combustion chamber end; and a plurality of spiral grooves are formed in the inner wall of at least one cone-shaped channel. The rotary jet combustion system aims to further improve the turbulence intensity of a turbulent flame jet in a working process of the ignition chamber type engine, so that the in-cylindercombustion and the engine performance are improved.

Description

technical field [0001] The invention belongs to the technical field of engines, and in particular relates to an ignition chamber type engine rotary jet combustion system. Background technique [0002] The use of lean burn is an important way to improve the thermal efficiency of ignition engines and reduce harmful emissions. When using LNG, LPG and other high ignition point fuels to develop lean burn technology for engines with large cylinder bores (such as cylinder bores greater than 150mm), in order to improve ignition reliability and combustion stability, an ignition chamber system is usually used to form a rich-lean layered mixture . Specifically, a mixture gas close to the stoichiometric ratio suitable for ignition is formed in the small-volume ignition chamber, while most of the fuel forms a lean mixture gas in the main combustion chamber. After the mixed gas in the ignition chamber is ignited by the spark plug, it forms a turbulent flame jet, ignites the lean mixed g...

AI Technical Summary

Problems solved by technology

For now, the channel of the existing ignition chamber engine system mainly adopts a cylindrical structure. This structure has a simple process, but it also has certain limitations. , Insufficient combustion in the main combustion chamber, low thermal efficiency, etc.

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