Engine ignition chamber system with elliptical conical passage

Abstract

The invention discloses an engine ignition chamber system with an elliptical conical passage. The engine ignition chamber system comprises a housing and a housing cover, wherein a cavity in the housing and the housing cover forms an ignition chamber, the housing cover is located at the top end of the ignition chamber, a fuel supply device and an ignition device are arranged on the housing cover, the housing is installed on a cylinder cover of an engine, and a space defined by an air cylinder, a piston and the cylinder cover of the engine forms a main combustion chamber, the bottom end of the housing extends into the main combustion chamber, a plurality of channels are formed near the bottom end of the housing, and the channels communicate with the ignition chamber and the main combustion chamber; and at least one of the plurality of channels mentioned above adopts an elliptic conical structure, namely a cross section of the channel is oval, and the longitudinal section of the channel is conical. According to the engine ignition chamber system, the turbulence intensity of turbulent flame jet flow in the working process of the ignition chamber type engine is further improved, flame propagation is accelerated, the combustion is more sufficient, and the performance of the engine is improved.

Description

technical field [0001] The invention belongs to the technical field of engines, and in particular relates to an engine ignition chamber system with an elliptical conical channel. Background technique [0002] The use of lean burn is an important way to improve the thermal efficiency of ignition engines and reduce harmful emissions. Lean burn technology is implemented on engines with large bores (for example, bores greater than 150 mm). 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 gas in the main combustion chamber, and forms a turbulent di...

AI Technical Summary

Problems solved by technology

In the prior art, the channel of the engine ignition chamber system mainly adopts a cylindrical structure. This structure is simple in technology, but it also has certain limitations. For example, the turbulence intensity of the jet generated after combustion is low, which may easily cause insufficient combustion.

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