Науково-методичні підходи підтримання надійності підвіски автобусів засобами матеріального забезпечення

It is established that the ability to perform car functions of transportation, taking into account the operating conditions, a given time interval or mileage is characterized by failure-free, as one of the properties of reliability [1]. The failure-free rate is the probability of failure-free operation, which is determined by the results of preliminary experimental observations of specific units or systems of the car. A typical case may be the failure of any element of the car, which results in the failure of the entire object. An example can be: car drive, brake system, suspension and more. The failures with such elements can be calculated using a Poisson probability distribution. The Poisson distribution is used for elements (systems) with many possible events, each of which is not common. The following application of this distribution is possible in the practice of car operation, for example: the number of failures for a group of simultaneously operating cars during a predetermined period of time (or time); number of accidents; the number of vehicles entering the service area (repair) per unit time, the number of spare parts received from the warehouse; etc. The Poisson distribution will be used in the calculations of the probability of failure-free operation of vehicle suspensions. It has been found that the pneumatic suspension of modern large buses is a complex, multi-node technical system, in which different kinds of failures can occur during their operation. Reliable suspension performance is highly dependent on many factors that are complex and multi-disciplinary. The availability of failures data of the suspensions of modern large buses allows systematizes failures and identifies the causes of failures; develop measures for their elimination, for example by adjusting the timing of preventive work. Another solution to the problem of maintaining the reliability of the bus suspension is to develop a method (law) of logistics. It provides for the selection in a separate group of a number of permanently replaceable structural elements, the amount of stock of which requires the use of information on the intensity of failure flows and their combination with calculations. One way to control the reliability of the suspension is to use a developed technique.