Diesel engine cylinder cover design analysis method based on CAE simulation technology

Abstract

The invention relates to the field of engine design analysis, in particular to a diesel engine cylinder cover design analysis method based on a CAE simulation technology. The method comprises the steps: 1, based on a three-dimensional model of the diesel engine cylinder cover, conducting high-cycle fatigue finite element fatigue strength calculation on the diesel engine cylinder cover; 2, analyzing the calculation result of the fatigue strength of the high-cycle fatigue finite element, and verifying whether the design scheme of the diesel engine cylinder cover is feasible or not; 3, performinglow-cycle fatigue finite element fatigue strength calculation on the diesel engine cylinder cover based on the three-dimensional model of the diesel engine cylinder cover; 4, analyzing the calculation result of the fatigue strength of the low-cycle fatigue finite element, and verifying whether the design scheme of the diesel engine cylinder cover is feasible or not. According to the method, design defects are effectively avoided, development risks are fully estimated, the analysis and verification efficiency and accuracy are improved, the development period is shortened, the development costis reduced, rack tail gas emission is avoided, the core technology of cylinder cover design is mastered, and forward development is achieved; and the method has relatively high reliability, portability and operability.

Description

technical field [0001] The present invention relates to the field of engine design analysis, in particular to a method for analyzing design and analysis of a diesel engine CAE simulation, in particular to a method for analyzing a design and analysis of a cylinder head of a diesel engine based on CAE simulation technology. Background technique [0002] The cylinder head of a diesel engine is installed above the cylinder block, and its main function is to seal the cylinder and form a combustion space together with the piston. In the working process of diesel engine, the cylinder head bears the mechanical load caused by gas force and fastening bolts, and also bears a high thermal load due to contact with high temperature and high pressure combustion gas. Therefore, the design of the cylinder head of the diesel engine should ensure its high strength and rigidity at the same time, which puts forward high requirements for the design of the cylinder head of the diesel engine. [0...

AI Technical Summary

Problems solved by technology

[0005] 1) If the cylinder head design is found to be unreasonable on the diesel engine test bench, many modifications are not easy to implement, which increases the difficulty of optimal design

[0006] 2) Carry out analysis and verification on the diesel engine test bench. Compared with the CAE simulation design analysis technology, it takes a long time, takes up a lot of personnel and bench resources, and the cost is too high. Moreover, the bench test will emit a large amount of diesel engine exhaust, which is not environmentally friendly.

However, the above-mentioned patents only use the finite element method in CAE simulation technology to design and analyze the diesel engine oil pan, and do not propose a method for designing and analyzing the diesel engine cylinder head.

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