High-supercharged engine air passage structure optimization design method based on data driving

Abstract

The invention discloses a high-supercharged engine air passage structure optimization design method based on data driving. The method comprises steps that parameterization design is conducted on an air valve installation angle in an air passage, the inner diameter of an air valve seat, the inner diameter of an air valve seat ring, an air passage throat flow section and a cylinder cover / air inlet pipe interface, and a CAD model is established; a one-dimensional, two-dimensional and three-dimensional CFD simulation matrix is established based on the parameters; based on a simulation result of the CFD simulation matrix, an ML machine learning algorithm is carried out to complete establishment of a model ML classification model and an ML regression model; and the ML classification model and the ML regression model carry out qualitative and quantitative evaluation on the airway structure optimization level respectively. According to the intelligent model established by adopting the method,the flowing performance of the air passage is predicted based on data driving, and the optimal design of the air passage structure can be optimally or optimally performed.

Description

technical field [0001] The invention relates to the field of research on the flow performance of an engine air passage, in particular to a data-driven method for optimizing the design of the air passage structure of a high-pressure engine. Background technique [0002] Engine combustion and emission performance are important factors to evaluate the overall performance of the engine. Higher combustion and emission efficiency can optimize engine operating parameters and improve equipment reliability and economy. The oil circuit and gas circuit are the key to the combustion and emission of the engine, and the gas circuit is the most complex control factor of the engine, which is manifested in various forms of turbulent flow represented by vortex and tumble flow. Under the condition of high pressurization ratio, the airway throat parameters of the intake and exhaust system have an important influence on the airway flow performance. However, there is no breakthrough in the resear...

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Problems solved by technology

[0004] Purpose of the invention: The purpose of the present invention is to provide a data-driven method for optimizing the design of the airway structure of a high-pressure engine, which solves the problems of high research costs and long development cycles of existing engine airway flow performance research methods, while avoiding Problems such as modeling difficulties in airway design can easily and quickly predict engine airway performance, and realize the collaborative optimization of flow coefficient, airflow organization and pump air work

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