Quality Evaluation of Diesel Marine Engine Based on Fuzzy Analytic Hierarchy Process and Improved Close Value Method

The purpose of this paper is to evaluate diesel engine quality by applying the Fuzzy Analytic Hierarchy Process (FAHP) and the improved close value method. The fuzzy analytic hierarchy process uses two groups of experts and engineers to score, and tests their results, and then weights together to give the index weights, so that the weight determination is more credible. In addition, for the problems of positive index, reverse index, and moderate index in the diesel engine index, a more appropriate close value method was used for comprehensive evaluation. This paper improves the close value method so that it can handle multiple types of index problems. Finally, by comparing with the TOPSIS method, it was found that the combination of FAHP and the close value method can make a more accurate judgment of the quality evaluation of the diesel engine.