Pre-combustion chamber structure and engine

Abstract

The embodiment of the invention discloses a pre-combustion chamber structure and an engine, relates to the technical field of engines, and solves the problem of discontinuous adjustment of the jet flow sectional area in the related technology. The pre-combustion chamber structure comprises an outer-layer structure, an inner-layer structure and a driving device, the outer-layer structure is arranged in a combustion chamber of the automobile engine, a containing cavity is formed in the outer-layer structure, an outer-layer through hole is formed in the vertical side wall of the outer-layer structure, and the containing cavity communicates with the interior of the combustion chamber of the automobile engine through the outer-layer through hole; the inner-layer structure is arranged in the containing cavity, a pre-combustion cavity is formed in the inner-layer structure, the vertical side wall of the inner-layer structure and the vertical side wall of the outer-layer structure slide in an attached mode, and inner-layer through holes are formed in the vertical side wall of the inner-layer structure; the driving device is used for driving the inner-layer structure to vertically slide in the outer-layer structure, so that the inner-layer through holes and the outer-layer through holes are aligned or staggered. The pre-combustion chamber structure is used for igniting combustible mixed gas in a combustion chamber of an automobile engine.

Description

technical field [0001] The embodiments of the present application relate to but are not limited to the field of engines, and in particular relate to a pre-combustion chamber structure and an engine. Background technique [0002] The pre-chamber is a small combustion chamber inside the gasoline engine combustion chamber. The pre-chamber can be connected to the main combustion chamber through a small hole. The combustible mixture enters the pre-chamber during the intake stroke and is ignited by the electrode. The flame front formed after the mixture is ignited flows out of the small holes on the surface of the pre-chamber and ignites the combustible mixture in the main combustion chamber. Multiple ignition positions within the combustion chamber allow for faster and more complete combustion of the mixture. [0003] The related art discloses a pre-chamber structure, the engine pre-chamber structure includes a pre-chamber assembly, the pre-chamber assembly is installed on the e...

AI Technical Summary

Problems solved by technology

[0004] When adjusting the jet cross-sectional area of ​​the above-mentioned pre-combustion chamber, one or more of the multiple injection hole assemblies is opened or closed by the opening and closing assembly, and the adjustment of the jet cross-sectional area is realized by adjusting the number of opened injection hole assemblies. This adjustment method is Stepwise, the change of the jet cross-sectional area is jumping, and it is easy to cause impact and knock when the nozzle hole is opened and closed. At the same time, the adjustment accuracy is related to the number of nozzle components. Fine control of jet flow

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