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A piston structure and engine

A technology of piston and adjustment structure, applied in the direction of engine components, machines/engines, pistons, etc., can solve the problem of high pressure on the piston side, and achieve the effect of reducing the pressure on the piston side and reducing the frictional pressing force

Active Publication Date: 2022-07-12
ZHEJIANG GEELY HOLDING (GROUP) CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] This application is to solve the technical problem that the piston side pressure is relatively large in the prior art

Method used

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  • A piston structure and engine
  • A piston structure and engine

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Embodiment Construction

[0034] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, but not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of this application.

[0035] Reference herein to "one embodiment" or "an embodiment" refers to a particular feature, structure, or characteristic that may be included in at least one implementation of the present application. In the description of the embodiments of the present application, it should be understood that the orientations or positional relationships indicated by the terms "upper", "lower", "top", "bottom", etc. are based on the orientations or positional ...

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Abstract

The application relates to a piston structure and an engine. The piston structure includes a piston head; the piston head is provided with a center of mass adjustment structure; the center of mass adjustment structure is used to adjust the center of mass of the piston structure during the movement of the piston structure; The guide cavity of the head and the fluid provided in the guide cavity; the guide cavity includes a receiving part and a moving part, the moving part is communicated with the receiving part and the moving part is arranged above the receiving part; the receiving part is used for accommodating the fluid; the moving part Include the movement area of ​​the fluid outside the container. According to the technical solution provided by the present application, when the piston moves downward in the cylinder, the piston will be subjected to a certain side pressure, and under the action of the side pressure, the piston will have an inclination angle. At this time, under the action of inertial force, the fluid in the accommodating part will The ability to move in the opposite direction to the piston side pressure offsets the center of mass and reduces the piston side pressure.

Description

technical field [0001] The present application relates to the technical field of engines, and in particular, to a piston structure and an engine. Background technique [0002] The piston assembly includes the parts that reciprocate in the cylinder, such as the piston, the piston pin and the piston ring, and is the component with the most severe working conditions in the engine. The piston assembly and the cylinder together ensure the normal operation of the engine. Common features of piston assemblies are high operating temperatures, high mechanical loads, high thermal loads, and poor lubrication. This situation determines that the piston assembly is susceptible to intense wear. [0003] The piston is directly affected by the periodically changing air pressure during work, and generally reaches the maximum value near the top dead center of the expansion stroke; the piston reciprocates at a high speed in the cylinder, generating a great reciprocating inertial force, causing...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F02F3/00F02F3/22
CPCF02F3/00F02F3/22
Inventor 卫飞秦奋葛伟廷赵俊鑫韩金宝汪记伟齐洪波程晨郑华春孙程龙易世雄窦红印杨万里王瑞平肖逸阁
Owner ZHEJIANG GEELY HOLDING (GROUP) CO LTD
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