Reliability characteristics of a vehicle during its forced inspections

The article discusses how to increase vehicle reliability through periodic inspections. Cases are considered where inspection intervals are decided by the vehicle operator/driver and where these inspections are forced by the vehicle manufacturer. The concept of conditional reliability was used to describe the vehicle’s reliability between inspections, and for forced inspections, the concept of a so-called certain random variable was additionally used.The Dirac delta can be considered as the probability density function for this variable. The considerations are illustrated with a numerical example, for which the results are presented in graphical form. Block diagrams of the discussed reliability systems are also provided.
RELIABILITY CHARACTERISTICS OF A VEHICLE AT ITS FORCED SERVICES
Abstract
The article describes the method of reliability increase for a vehicle with its periodic services. There were considered both cases – when the service is decided by a vehicle operator/driver and when the service is forced by the vehicle manufacturer. Conditional reliability was used to describe reliability of the vehicle between its services and additionally –
Dirac delta function, when the case of forced service was taken into consideration. The problem considered in the article was illustrated with a numerical example and characteristics in graphical form were enclosed. Block diagrams of the reliability systems discussed were given as well.
1. INCREASING VEHICLE RELIABILITY THROUGH PERIODIC INSPECTIONS
In the operation of vehicles, as well as other technical objects, inspections are used to ensure their operational reliability at a specific level over an extended period of use. This method is particularly effective for passenger cars – vehicles that are relatively inexpensive and, consequently, have relatively low reliability. (…)

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