On the Optimizing Maintenance Intervals of Transport Vehicles

The article examines the optimizing maintenance intervals of the in-use transport vehicles which have the lowest detection, diagnosis, maintenance and repair cost in unit operating mileage. The findings of the paper suggest that the operating fault rate λ(t) of the vehicles obeys two parameter Weibull distribution by means of analyzing a large collection of fault data of a given type vehicles. Combined with renewal function H(t), the mathematical model of optimizing maintenance intervals which aimed at the cost was established. In order to obtain the solution of the model; the detection, diagnosis, maintenance and repair cost data of these vehicles during years of operation were collected and then the average cost values involved in this model was acquired. The optimizing maintenance interval of the given vehicles is 15000 km, which enables the detection, diagnosis, maintenance and repair cost in unit operating mileage to be the lowest. A special test proved that the result mentioned above was accurate and reliable. Finally, by practicing the optimizing maintenance intervals can increase the economic benefit of highway transportation significantly and guarantee the satisfying technical condition of the in-use vehicles.