Micro-miniature linear scavenging device

Abstract

The invention discloses a micro-miniature linear scavenging device which comprises a linear scavenging box body and a piston air distribution valve element assembly, a linear scavenging box cavity is formed in the left end of the linear scavenging box body, a rod piece matching hole communicating with the linear scavenging box cavity is formed in the right end of the linear scavenging box body, and an oil-gas mixing channel is formed in the top of the linear scavenging box body and communicates with the linear scavenging box cavity; one or more scavenging channels are arranged at the end, away from the rod piece matching hole, of the linear scavenging box cavity, and each scavenging channel penetrates through the linear scavenging box cavity to the end face matched with an external engine air cylinder; the engine air cylinder is connected to the end, wherein the one or more scavenging channels are arranged, of the linear scavenging box cavity, and each scavenging channel inclines relative to the axis of the linear scavenging box cavity and communicates with a corresponding scavenging channel in the engine air cylinder; and the piston air distribution valve element assembly is installed in the linear scavenging box cavity, one end of the piston air distribution valve element assembly extends into the rod piece matching hole, the other end of the piston air distribution valve element assembly is matched with the engine air cylinder, and an air cylinder scavenging port and an air cylinder exhaust port are formed in set positions of a power chamber of the engine air cylinder.

Description

technical field [0001] The invention relates to the technical field of linear scavenging, in particular to a miniature linear scavenging device. Background technique [0002] Compared with the chemical batteries currently occupying a monopoly position, the huge potential of hydrocarbon fuels in terms of energy density provides greater possibilities for the development of compact, high-energy micro energy systems, so various types of micro heat engine systems have emerged. However, as the feature size shrinks, problems that can be ignored at conventional scales become very prominent in micro-miniature heat engines. It mainly includes: combustion is more likely to be quenched by the wall at a micro scale, fuel leakage at a micro scale, and the heat dissipation loss of the wall surface is seriously increased due to the increase of the surface volume ratio at a micro scale. [0003] The flexible piston trajectory micro energy conversion system (hereinafter also referred to as t...

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Problems solved by technology

[0005] In view of this, the present invention provides a micro-miniature linear scavenging device, which aims to simplify the intake and exhaust system of the flexible piston trajectory micro-energy system, realize the gas exchange during the combustion process of the internal combustion engine, and ensure the filling of the combustible mixture before the combustion starts and the exhaust of combustion exhaust gas after combustion is completed; at the same time, it realizes the direct connection between the internal combustion engine piston and the motor mover, and solves the problem of low scavenging efficiency due to low movement frequency and uncertain stroke of the flexible piston track micro energy system

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