The matching of power performance parameters of marine diesel based on orthogonal principal component analysis

Abstract

Abstract To solve the problem of combining the operating parameters of marine diesel engines after modification. The 4190ZLC-2 type marine medium-speed engine produced by Jinan Diesel Engine Plant is used as the research object. The AVL_FIRE software is used to construct a dual-fuel combustion chamber model and verify the accuracy of the model. The orthogonal test method was used to simulate the combustion parameter matching the indicated power research objective. The method of principal component analysis was used for screening and comprehensive analysis. The results show that among the principal components affecting the indicated power, the cumulative contribution of the first two principal components reaches 99.90%, which basically contains all the information of the five indicators affecting the indicated power of diesel engine and can reflect the combination of power parameters of dual-fuel diesel engine. The study’s results can provide useful references for matching the influencing parameters of the indicated power.