Method for simplifying combustion reaction mechanism model of alternative fuel dimethyl ether of internal combustion engine

A mechanism model and alternative fuel technology, applied in computational theoretical chemistry, chemical process analysis/design, instruments, etc., can solve problems such as low computational efficiency, shorten development cycle, reduce development cost, and improve computational efficiency

Pending Publication Date: 2021-03-12
JIANGSU UNIV OF SCI & TECH
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Problems solved by technology

[0006] The method of the present invention overcomes the problem of low calculation efficiency in the numerical simulation of the combustion process of the internal combustion engine in the prior art, and makes up for the above-mentioned deficiencies. The numerical calculation efficiency of the working process is of great significance to shorten the development cycle of internal combustion engine products and reduce development costs

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  • Method for simplifying combustion reaction mechanism model of alternative fuel dimethyl ether of internal combustion engine
  • Method for simplifying combustion reaction mechanism model of alternative fuel dimethyl ether of internal combustion engine
  • Method for simplifying combustion reaction mechanism model of alternative fuel dimethyl ether of internal combustion engine

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Embodiment Construction

[0041] In order to make the purpose, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific implementations described here are only used to explain the present invention, not for The invention is limited.

[0042] attached Figure 1-Figure 3 As shown, a simplified method of the combustion reaction mechanism model of an internal combustion engine alternative fuel dimethyl ether (PODE) of the present invention, the specific steps are as follows:

[0043] Step 1: Determine the acceptable error, set the threshold, and set the PODE 3 , O 2 and N 2 Set as starting material; take the equivalent ratio as Phi=0.5~1.5, the temperature as 700K~1600K, and the pressure as 1atm~50atm. The degree of coupling between the two components was determined by the Direct Relationship Graph (DRG).

[0044] In...

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Abstract

The invention discloses a method for simplifying a combustion reaction mechanism model of an alternative fuel, dimethyl ether, of an internal combustion engine, and particularly relates to a method for simplifying a chemical reaction mechanism model by adopting a direct relation graph method, a sensitivity analysis method, an isomerism method, a singular perturbation calculation method and a diffusion species binding method. Starting from a detailed chemical reaction mechanism model of the internal combustion engine alternative fuel dimethyl ether, a simplified chemical reaction model for constructing the dimethyl ether internal combustion engine alternative fuel is disclosed. The simplified mechanism model obtained by the internal combustion engine alternative fuel dimethyl ether combustion chemical reaction mechanism simplifying method is high in calculation efficiency and accurate in result. The method can be directly used for numerical simulation of the alternative fuel dimethyl ether combustion flow field of the internal combustion engine, and provides effective technical support for numerical analysis of the internal combustion engine.

Description

technical field [0001] The invention belongs to the technical field of computer simulation of the combustion process of an internal combustion engine. A simplified method involving the model of the combustion reaction mechanism. More specifically, it relates to a simplified method for a combustion reaction mechanism model of an internal combustion engine alternative fuel dimethyl ether (PODE). Background technique [0002] At present, there are two main ways to determine the emission and combustion efficiency of an internal combustion engine. One is to measure the emission and performance of an internal combustion engine through an internal combustion engine test bench. This method has reliable results and is very instructive for those with high precision requirements. Advantages, but it is expensive and time-consuming, and it is not suitable for use in the entire development process of internal combustion engines. The other is to numerically simulate the working process o...

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Application Information

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IPC IPC(8): G16C20/10G16C10/00
CPCG16C20/10G16C10/00
Inventor 温华兵梅港伟杨文明杨梦单敬伟
Owner JIANGSU UNIV OF SCI & TECH
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