Calculation method for parameter design of inverted-triangle rotor engine

Abstract

The invention discloses a calculation method for parameter design of an inverted triangular rotor engine. The calculation method comprises the following steps: calculating an actual molded line of a rotor and an actual molded line of a cylinder body; moving the actual molded line of the rotor according to a crank angle i / 2, calculating the length of a circumferential working surface line of the rotor and the length of a circumferential contact surface line of a cylinder body, and calculating the area of a working volume plane; if i is less than or equal to 1440, i is equal to i + 1, and the process is returned; if i is larger than 1440, the working volume and displacement of a single cylinder and the volume of a pit of a combustion chamber are obtained according to the thickness of the cylinder body, the maximum swing angle and the eccentric distance; and calculating the length of the end face sealing fin, the total length of the sealing fin, the allowable intake and exhaust end face area, the maximum sealing angle, the average rate of the sealing fin at different rotating speeds and the surface-to-volume ratio of the combustion top dead center. Theoretical basis is provided for design and research and development of the inverted-triangle rotor engine, and the research and development period is shortened. The method has the advantages of being efficient and accurate in calculation, supporting parallel calculation, convenient to operate, clean in interface and the like.

Description

technical field [0001] The invention belongs to the field of internal combustion engine simulation simulation design, and relates to a calculation method for parameter design of an inverse triangular rotor engine. Background technique [0002] With the increasing demand for aerodynamic power of UAVs, miniaturized aerodynamic devices with high energy density, strong endurance and low cost have become one of the important research goals in the field of UAVs. Different from the traditional triangular rotor engine, the inverse triangular rotor engine is also called the inverted triangular rotor engine (Inverted-Wankel Engine), or Cycloid Rotor Engine (Cycloid Rotor Engine), which is a new type of rotor newly proposed in recent years. Engine structure type. Compared with the traditional triangular rotor engine, the inverse triangular rotor engine has the characteristics of high compression ratio and small air leakage, and is suitable for spark ignition and compression ignition i...

AI Technical Summary

Problems solved by technology

However, there is no inverse triangular rotor engine module in the current numerical simulation software for the working process of internal combustion engines. At the same time, the theory of creating the rotor and cylinder profile of the inverse triangular rotor engine is complicated, and the structural parameters of the main parts of the engine are numerous, involving a large number of theoretical formulas. calculation, there are still some parameters, such as instantaneous arc length, area, working volume, etc. There are no corresponding calculation formulas at present, and the work of determining these parameters is very complicated, and the working process simulation of the rotary engine, the calculation of the strength of engine parts, etc. need these parameters Therefore, it is necessary to use computer programming to determine many structural parameters and kinematic parameters of the rotary engine, so as to realize the parameter design of the inverse delta rotor engine, quickly complete the performance prediction and optimization of the inverse delta rotor engine, and effectively shorten the development cycle

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