关键词: 系统评估与可行性分析 , 灰色关联分析 , 柴油机 , 状况评估 , 特征参数

Abstract: As a complex system, diesel engine is difficult to be evaluated satisfactorily by only one or a few char?acteristic parameters. A method of multi-parameter fusion can be used to improve the evaluation validity. The grey relation analysis is a valid approach fusing multiple parameters. The condition evaluation for diesel engine was implemented by the grey relation analysis is this paper. Based on the theoretical analysis and a lot of con- tradistinctive experiments, eight important parameters and fiducial parameters for each condition were deter?mined .On the above basis, a model of condition evaluation for diesel engines was established. It was validated in other diesel engine tested. The results show that the evaluation method proposed in this paper is simple in calcu?lation, hign veracious and effective.

Key words: systematic assessment and feasibility analysis , grey relation analysis , diesel engine , condition evalu?ation , characteristic parameter