Boundary compression engine

Abstract

The invention discloses a boundary compression engine, comprising a working medium enveloping space, a piston, an intake valve and an exhaust valve; the working medium enveloping space at least comprises a piston cylinder sleeve fitting area, a combustion area and a high-pressure compression gas area, a high-pressure gas inlet is arranged on the outer wall of the high-pressure compression gas area, the high-pressure gas inlet is communicated with a high-pressure gas source by a compression gas control valve, and the pressure of the high-pressure gas in the high-pressure gas source is more than the pressure of fresh filled gas in the working medium enveloping space after the engine is filled. The boundary compression engine solves the problem that a great amount of mechanical work can be consumed in the compression stroke of the existing internal-combustion engine, greatly improves the heat work conversion efficiency of the engine; meanwhile, the structure is simple, the volume is mall, the weight is light and the cost is low.

Description

technical field [0001] The invention relates to the field of engines, in particular to an interface compression engine. Background technique [0002] Whether the existing internal combustion engine is a piston internal combustion engine or a turbine internal combustion engine, the fresh air charged must be compressed by a mechanical compressor so that the pressure and temperature of the fresh air charged can reach the conditions required for subsequent explosive combustion . However, this process will consume a large amount of mechanical work, so that a large part of the precious mechanical work obtained from the gas heat energy is converted into low-quality compressed gas heat energy in the compression stroke, which is a huge waste. And due to the existence of mechanical compressed air components, the engine structure is complicated. If a method can be found, the fresh air charged into the cylinder can be compressed without using mechanical compressed air components and ...

AI Technical Summary

Problems solved by technology

[0004] If an additional air motor is added to the engine, the above-mentioned high-pressure and high-temperature steam is used to push the air motor to compress the fresh air in advance, so that it reaches the pressure required to start explosive combustion in the cylinder, and then the high-pressure fresh air is charged through the timing mechanism. It is connected to the cylinder for explosive combustion. Although it solves the problem of consuming a large amount of mechanical work in the compression stroke, under the current technical conditions, the steam motor must be made very large, which not only increases the manufacturing cost of the engine, but also makes the engine structure more difficult. Complex, bulky and heavy, greatly limiting the practical application value of the engine

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