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Engine combustion noise optimization prediction method and device and storage medium

A combustion noise and prediction method technology, which is applied in design optimization/simulation, computer-aided design, special data processing applications, etc., can solve the problems of demanding computer performance, huge calculation time of combustion model, time-consuming and labor-intensive combustion noise, etc. Achieve the effect of saving test and test work, improving NVH performance, and reducing engine noise

Active Publication Date: 2021-12-17
天津仁爱学院
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Problems solved by technology

[0003] However, in the process of studying combustion noise, the noise test has relatively high requirements for the test environment, and must be carried out in a semi-anechoic chamber that meets the requirements.
Moreover, the experiment takes a long time. Finding the optimal and reasonable parameter configuration requires a large number of experiments. At the same time, it has a large uncertainty, and it is difficult to obtain accurate results.
Moreover, the optimization of the combustion process of the engine is often completed through the calibration of the electronic control data after the prototype is manufactured, which is expensive and time-consuming.
With the development of computing science, the simulation technology of internal combustion engine combustion process is becoming more and more mature, but the calculation time of a more accurate combustion model is very large, the calculation of combustion noise is time-consuming and labor-intensive, and the performance requirements of the computer are very high. Harsh

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  • Engine combustion noise optimization prediction method and device and storage medium
  • Engine combustion noise optimization prediction method and device and storage medium
  • Engine combustion noise optimization prediction method and device and storage medium

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Embodiment Construction

[0042] In order to make the purposes, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments It is a part of the embodiments of this application, but not all of them. Based on the embodiments in the present application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present application.

[0043] For ease of understanding, a detailed description of an engine combustion noise optimization prediction method provided by an embodiment of the present application is given below, see figure 1 , an engine combustion noise optimization prediction method, comprising the following steps:

[0044] Step S1, constructing a finite ele...

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Abstract

The invention relates to an engine combustion noise optimization prediction method and device and a storage medium, and the method comprises the steps: carrying out the combustion process simulation through constructing a finite element model of engine combustion, and obtaining an original sample space; performing a Latin hypercube sampling test in the original sample space, obtaining initial sample point data through sample generation and correlation control, and performing weight calculation according to a fuzzy analytic hierarchy process to obtain target sample point data; and generating a noise prediction approximation model according to the target sample point data and a sequence iteration response surface method, determining that a value of a multiple correlation coefficient of the approximation model is not less than a preset coefficient value, fitting a response relationship between the combustion parameters and the combustion noise, determining an optimal combustion parameter combination, and predicting the optimal combustion noise according to the optimal combustion parameter combination. According to the method, through reasonable sampling and weight distribution, combustion noise prediction with relatively high efficiency can be realized only by a small number of samples, and reference is provided for reasonable optimization.

Description

technical field [0001] The present application relates to the technical field of engine combustion noise prediction, in particular to a method, device and storage medium for optimal prediction of engine combustion noise. Background technique [0002] At present, national and industry regulations have increasingly stringent requirements on vehicle noise, and consumers' requirements on vehicle noise level and quality are also constantly increasing. Combustion noise is one of the main noise sources of vehicle engines, and the noise performance of the engine has become its main performance index as well as power, economy, and reliability. Combustion noise is due to the gas pressure in the cylinder rises sharply when the internal combustion engine is working, and the gas pressure in the cylinder rises sharply, resulting in gas pressure dynamic load and high-frequency oscillation, which directly excites the structure of the internal combustion engine to vibrate and transmits the n...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/23G06F119/10
CPCG06F30/23G06F2119/10
Inventor 于洋洋季宁张俊红么大锁王俊
Owner 天津仁爱学院
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