Optimal Allocation of Fuzzy Multi-state Reliability in Diesel Engine

To reduce inapplicability of binary state models in system reliability analysis, fuzzy multi-state reliability allocation model is presented. In presented model, the fuzzy concept and multi-state reliability theory are integrated based on the state detection technology of diesel engine, and take technology and economy into account at the same time. Fuzzy multi-state reliability theory was analyzed firstly. The system states allocation and optimization model were then proposed. In diesel engine fuel supply system which includes fuzzy components, components states were represented by functional characteristics, equivalence classes founded by lower boundary points, and the system states were allocated in minimum cost situation. Finally, an example was given to verify the effective of proposed model.