Application of fuzzy fault tree analysis in the fault diagnosis for automobile engine system

摘要

Fuzzy Fault tree analysis is one of important means for analysis of reliability and safety and fault diagnosis of the system. It features a strong logical and visual image. It is a reliable analysis method for both qualitative and quantitative analysis of the typical fault of a system and thus provides a theoretical basis for fault analysis processing and system design. This paper presents a fault tree analysis used in the analysis of fault mode for automobile engine system, builds the fault tree of common fault mode. Through the qualitative and quantitative analysis of fault tree, the causal relationship between the faults can be fully reflected, and the combination of the common fault mode for the system can be obtained. It can provide powerful technical support and decision basis for maintenance staff to improve the integrity of fault analysis, the accuracy of fault location and the timeliness of fault exclusion.