Axial piston and gas turbine combined cycle engine

Through the axial piston and gas turbine combined cycle engine, combined with an annular arrangement and supercritical carbon dioxide fluid to do work, the problems of low thermal efficiency, high fuel consumption and heavy volume of traditional fuel engines are solved, and efficient energy utilization and power output are achieved.

CN120798521APending Publication Date: 2025-10-17曾知行
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Patent Information

Application Number
CN202511203568.8
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-08-26
Publication Date
2025-10-17

AI Technical Summary

Technical Problem

Traditional fuel engines have low thermal efficiency, high fuel consumption, large size, complex structure and excessive weight, making it difficult to effectively utilize exhaust gas and heat dissipation energy, resulting in insufficient overall performance.

Method used

It adopts an axial piston and gas turbine combined cycle engine, with 12 groups of axial cylinders and a central gas turbine unit arranged in a ring, combined with supercritical carbon dioxide fluid to perform work, and uses a planetary reduction gear set and a central camshaft to achieve unified power output. It also integrates an annular intake, supercharged intercooler and lubricating oil system to simplify the valve structure and recover heat dissipation energy.

Benefits of technology

It improves the thermal efficiency of the engine and the output power per unit time, unit volume and unit weight, simplifies the system design, reduces the number of parts and energy consumption, and reduces fuel consumption and system complexity.

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Abstract

The invention relates to an axial piston and gas turbine combined cycle engine which is characterized in that a piston of a two-stroke internal combustion engine and a piston of a Stirling external combustion engine are symmetrical in 12 groups of annular cylinders of which the two ends are oppositely arranged, and a rigid piston connecting rod converts linear reciprocating motion of a piston group into circular motion of a cam; fuel gas which is not fully combusted is discharged into a central channel to be further fully combusted, a high-speed turbine and a low-speed cam are connected through three stages of gas turbines to jointly act and output outwards in a unified mode, an air inlet supercharging turbine compresses air to enter an annular air inlet supercharging intercooling chamber, lubricating oil is mixed, and the air enters all movement systems. Friction parts are lubricated, and stable operation is guaranteed. The combined cycle engine combines the advantages of a two-stroke internal combustion engine, a Stirling external combustion engine and a gas turbine engine, the structure is simple and compact, oil consumption is low, carbon emission is reduced, supercritical carbon dioxide fluid is efficiently utilized to recover energy, and the overall heat efficiency of the engine is high.
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