Rotating mechanism type adjusting system for engine displacement

Abstract

The invention provides a rotating mechanism type adjusting system for engine displacement, and belongs to the technical field of internal combustion engines. The system comprises a cylinder, a cylinder cover, a piston, a piston ring, a connecting rod, a volumetric chamber, a spring, a rotating body, a rotating shaft and a through hole; the volumetric chamber is formed in the piston, and the left end of the volumetric chamber communicates with the top part of the piston through the through hole; the rotating shaft is embedded into the piston; the rotating body is arranged in the volumetric chamber and is integrally fixedly connected with the rotating shaft, wherein the rotating body is integrally connected with the piston through the spring; when the pressure in a combustion chamber reaches the top value and the combustion pressure is relatively high under a high-speed working condition, the rotating body anticlockwise rotates, and then the volume of the combustion chamber is increased; when the pressure in the combustion chamber reaches the top value and the combustion pressure is relatively low under a low-speed working condition, the rotating body clockwise rotates, and the volume of the combustion change is reduced. The system is reasonable in structure, simple in design, and suitable for the optimal design of the engine piston.

Description

technical field [0001] The invention belongs to a compression ratio design device in the technical field of internal combustion engines, in particular to an engine displacement rotating mechanism adjustment system. Background technique [0002] The compression ratio refers to the degree to which the engine mixture is compressed, using the ratio of the total volume of the cylinder before compression to the volume of the cylinder after compression (that is, the volume of the combustion chamber). At present, the vast majority of automobiles use the so-called 'reciprocating engine'. Simply put, in the engine cylinder, there is a piston that reciprocates in a straight line and continues to cycle. There is a certain range of motion in the stroke. As far as a certain cylinder of the engine is concerned, when the stroke of the piston reaches the lowest point, the position at this time is called the bottom dead center. The volume formed by the entire cylinder including the combustio...

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Problems solved by technology

[0003] After searching the existing literature, it is found that the patent application number is 20092014360.5, and the name is a patented technology of a mechanism that can change the compression ratio of the engine. A variable compression ratio mechanism is proposed to make the combustion efficiency higher, but its compression ratio changes. Requires artificial control, cannot achieve self-regulation

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