An intake supercharging heating system for a micro internal combustion engine

Abstract

The invention relates to an air intake supercharging heating system of a miniature internal combustion engine, which belongs to the field of miniature internal combustion engines. Including supercharging device, heating device, electric heating controller thermocouple sensor and exhaust gas duct. The heating wire of the heating device can directly heat the air, and the booster device pressurizes the fresh air to make up for the insufficient air intake of the micro internal combustion engine caused by the thermal expansion of the air; the heating controller is based on the micro temperature monitored by the thermocouple sensor The exhaust temperature of the engine switches the heating wire power supply, and the exhaust gas duct transports the high-temperature exhaust gas of the micro internal combustion engine to the heating device to indirectly heat the air. The system can heat the fresh air with the electric heating wire during the start-up stage of the micro-engine. During the normal operation stage, the power supply of the electric heating wire is turned off, and the fresh air is heated by the exhaust gas. The exhaust gas energy under working conditions is effectively utilized to improve the overall efficiency of the internal combustion engine.

Description

technical field [0001] The invention relates to an air intake supercharging heating system of a miniature internal combustion engine, which belongs to the field of miniature internal combustion engines. Background technique [0002] With the development of micro-electro-mechanical systems (MEMS) and the introduction of a variety of miniaturized military equipment concepts, the development of micro-energy systems with small volume, light weight, high energy density, and continuous operation has become the focus of attention of various countries. Compared with conventional portable power sources, the energy density of micro internal combustion engines using hydrocarbon fuels is much higher, and the voltage can also be kept stable. In addition, the micro internal combustion engine also has the advantage of low cost. Therefore, micro internal combustion engines will be widely used in electronic devices in various industries such as industry, agriculture, environmental protectio...

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Problems solved by technology

[0004] The purpose of the present invention is to solve the sharp increase in heat dissipation caused by the large surface-to-volume ratio of the prior art, so that the temperature in the combustion chamber is lower than the lowest combustion point of the fuel; at the same time, because the bore size of the micro internal combustion engine is equivalent to the limit size of flame combustion, flames are extremely easy to occur Quenching, which in turn leads to the problem that the working efficiency of the miniature internal combustion engine is extremely low or even cannot work stably, and a kind of intake air supercharging heating system for the miniature internal combustion engine is provided

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