The results of studies on the durability and sustainability of the repair kit of the diesel engine fuel system in interaction with vegetable oils

BACKGROUND: Natural vegetable oil has long been considered as an alternative type of bioadditives to diesel fuel. Currently, little research has been conducted on the reliability of repair kits of fuel fine filter (FFF) in contact with natural vegetable oils. The paper discusses the study of the reliability of repair kits (rubber technical products) of a diesel engine FFF, which were aged for 6 months in commercial diesel fuel, rapeseed and soybean oils. AIM: Defining the durability and sustainability of the repair kit of the fine fuel filter of the YaMZ 236, 238, 240 diesel engines, which were aged for 6 months in commercial diesel fuel, rapeseed and soybean oils. METHODS: The application of the repair kit of a diesel engine FFF in commercial diesel fuel, rapeseed and soybean oils is considered. The necessity of conducting research on the durability and sustainability of repair kits in vegetable oils is justified. The obtained research results were studied, the elastic-strength properties of the repair kit of the fine fuel filter for the fuel system of the YaMZ 236, 238, 240 diesel engines aged for 6 months in vegetable oils (rapeseed, soybean oil) and diesel fuel were determined with the results of a new sample. The authors conducted research using the RKM 20.2 universal testing machine, verification certificate no. C-DUP/29-09-2023/283528415 dated 09/29/2023. The tests were conducted at JSC “NEW REGISTER” testing center, Elektrostal, Moscow region. RESULTS: The studies of the durability and sustainability of the repair kit (rubber technical products) of the FFF of the YaMZ 236, 238, 240 diesel engines fuel system have shown that the commercial diesel fuel impacts on the repair kit during six months and destroys it because of the additives contained in the commercial diesel fuel leading to oxidation and decrease in the service life of the repair kits [9, 10]. CONCLUSION: According to the results of the study, this is explained by the fact that the commercial diesel fuel contains additives, which lead to the concurrent oxidation process of the FFF repair kit in the commercial diesel fuel and leads to a decrease in the service life of repair kits.