THE MONITORING SYSTEM FOR CONNECTING-ROD BEARINGS OF THE MARINE INTERNAL COMBUSTION ENGINE
Abstract
Introduction. With the development of new technologies, the possibilities of creating fully automated diagnostic systems have significantly expanded, which is especially necessary in the case of complex signal processing of diagnostic system sensors. Modern sensor designs provide thermal compensation, simultaneous measurement of several parameters and are very reliable (several orders of magnitude higher than before), which facilitates the construction of complex automated diagnostic systems. Purpose. This article is devoted to the development of direct continuous temperature control of connecting rod neck bearings, which will provide earlier detection of the vessel combustion-type engines cranks’ failure and also to the modeling of the temperature distribution of the lower connecting rod head in case of malfunction of the lubrication system. Results. A variant of the of the connecting rod bearing temperature sensor design is proposed, which, in contrast to the method of measurement using surface acoustic wave radio technology, has an active temperature sensor and an power generating thermoelement. Such a device can detect an increase in the temperature of the measured object, which leads to an increase in the temperature gradient on the thermoelement and increase the electrical power of the thermoelectric element when the threshold value is reached and activates alarm transmission by the wireless data transmission module to the wireless data reception module. Conclusions. The obtained results of system modeling indicate that the process of changing the temperature of connecting-rod bearings is quite fast, which requires rapid registration of temperature rise by continuous monitoring systems. The problem can be solved by retrofitting such systems with remote temperature transducers of the proposed design.
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