ОЦЕНКА АНТИКОРРОЗИОННЫХ, ПРОТИВОИЗНОСНЫХ СВОЙСТВ СОСТАВОВ МАСЕЛ ДЛЯ КОНСЕРВАЦИИ ДВИГАТЕЛЕЙ ЗЕРНОУБОРОЧНЫХ КОМБАЙНОВ

Abstract

Works on conservation of the internal cavities of internal combustion engines and, first of all, cylinder liners are carried out before placing combine harvesters for off-season storage, for which equipment manufacturers recommend using special conservation technologies and specialized conservation oils. These measures to protect machines from corrosion are practically not used in real operation, primarily because of the high costs of their implementation. A low-cost resource-saving technology for protecting combine harvester engines from corrosion-mechanical wear is being developed at FSBNU VNIITiN by developing a conservation oil composition based on used engine oil. A method for cleaning waste oil from contaminants has been developed. Studies have been carried out to determine the rational composition of the oil, including the use of polymerized rapeseed oil and gun grease as additives that increase anti-wear and anti-corrosion properties. The optimal oil polymerization time has been established to be at least 20 hours, which makes it possible to increase the viscosity of the oil and increase the parameters of the protective film being formed. PVK gun grease is considered as a corrosion inhibitor in the composition of conservation oil. A small amount (3 l) of purified motor oil M-10G2 is taken for mixing PVC with base oil, the mixture is heated to 100°C and mixed for 20 minutes. The resulting enriching mixture of purified oil with dissolved polymerized rapeseed oil and PVC lubricant was added to the main volume of purified oil at a concentration of 3%, 6%, 9%. Based on the studies carried out, the dependences of the change in viscosity were obtained. It has been determined that a 6% additive is a rational concentration for adding an enriching mixture. An assessment of the possibility of precipitation of oil components during their storage showed acceptable values for the thickness of the sediment layer, not exceeding 1 mm. As a first approximation, a new oil composition has been developed, which is easily accessible for production under the conditions of agricultural enterprises of the agroindustrial complex.