Izvestiya MGTU MAMIIzvestiya MGTU MAMI2074-05302949-1428Moscow Polytechnic University6683410.17816/2074-0530-66834Research ArticleInvestigation of the driven disks of hydromechanical transmission BELAZ with the new LZ_G-Base oil and the friction materials FM-15 and MK-5ReginyaV. V-Il'yushchenkoA. FCorresponding member of the National Academy of Sciences of Belarus-LeshokA. VPh.D.sdilav@tut.byRogovoyA. N-GryazevD. A-PetrovV. APh.D.-OJSC “BELAZ” - Management Company of Holding “BELAZ-Holding”State Scientific Institution “Powder Metallurgy Institute”The branch of the company “Lubrizol Gesellschaft m.b.H”LTD “Gazpromneft-Lubricants”15032018121243230042021Copyright © 2018, Reginya V.V., Il'yushchenko A.F., Leshok A.V., Rogovoy A.N., Gryazev D.A., Petrov V.A.2018At the mining dump trucks BELAZ with lifting capacity from 30 to 90 tons, loaders and bulldozers, special vehicles BELAZ for metallurgical production (slag trucks, heavy vehicles), aerodrome tractors, as well as for dump trucks and vehicles for underground works of the brand “MoAZ” are used hydromechanical transmissions OJSC “BELAZ” is the managing company of the holding “BELAZ-HOLDING”. The most important element of the hydromechanical transmission, which limits its service life and reliability, are the friction clutches for switching the stages and blocking the hydraulic transformer. The disks of friction clutches sustain significant static and dynamic loads, their surfaces are exposed to high specific thermal energy and intensive wear. During the tests it was established that for the sintered powdered friction material based on copper MK-5 (commercially used in the hydromechanical gearbox) it’s possible to increase the friction coefficient, decrease the stopping time and the wear rate by using the transmission oil LZ_G-Base. The sintered powdered friction material FM-15 has initially increased tribotechnical properties in comparison with material MK-5. The investigations of tribotechnical properties of sintered powder materials is currently being given to much attention. However, these studies do not consider the influence of lubricants on the operation of the sintered powder friction materials. The application of oil of type (LZ_G-Base) which is developed on Lubrizol technologies and G-Base base oils during operation of the sintered friction material FM-15 increases its tribotechnical properties by 10…15%. The conducted investigations of the driven discs for the hydromechanical transmissions BELAZ with the new gear oil LZ_G-Base and the friction materials FM-15 and MK-5 have showed that the tribotechnical characteristics are increased and the wear rate of the discs is decreased.hydromechanical transmissionfriction diskcounterfacesintered powder friction materialoilslubricantfriction coefficientwear rateacoustic characteristics of the friction materialfriction torqueгидромеханическая передачафрикционный дискконртелоспеченный порошковый фрикционный материалмасласмазкакоэффициент тренияинтенсивность износаакустические характеристики фрикционного материаламомент трения[Рынкевич С.А., Тарасик В.П., Шаповалова О.А., Региня В.В., Курстак В.И. Повышение долговечности многодискового фрикциона гидромеханической передачи мобильной машины // Вестник Белорусско-Российского университета. 2011. № 1(30). С. 65-74.][Ильющенко А.Ф., Дмитрович А.А., Шаповалова О.А., Региня В.В., Лешок А.В. Результаты испытаний фрикционных дисков из различных материалов для гидромеханических передач самосвалов «БелАЗ» // Трение и износ, 2011. Том 32. № 3. С. 248-255.][Сергеев Л.В., Кадобнов В.В. Гидромеханические трансмиссии быстроходных гусеничных машин. М.: Машиностроение, 1980. 200 с.][Шарипов В.М., Дмитриев М.И., Городецкий К.И. О коэффициенте трения в контакте пар трения фрикционных муфт в коробках передач автомобилей и тракторов при переключении передач без разрыва потока мощности // Наука и Образование. МГТУ им. Н.Э. Баумана. Электрон. журн. 2014. № 8. С. 21-30.][Скадорва А.Ф., Карташевич А.Н. Критерий оценки функционирования фрикционной муфты коробки передач гусеничного трактора «Беларус-2103»// Вестник Белорусско-Российского университета. 2014. № 4(45). С. 80-91.][Хренов О.В., Дмитрович А.А., Лешок А.В. Металлокерамические фрикционные материалы. Минск: БНТУ, 2011. 42 с.]