LUBRICANT FOR DIESEL ENGINES

• Main Authors: CONSTANTINESCU ANCA GABRIELA, PETRE ION, POPA GEORGE DAN, IACOB DRAGO
• Format: Patent
• Language: English; Romanian
• Published: 28.11.2008
• Subjects: CHEMISTRY; FUELS; LUBRICANTS; LUBRICATING COMPOSITIONS; METALLURGY; PEAT; PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATINGINGREDIENTS IN A LUBRICATING COMPOSITION

The invention relates to a paraffinous or paraffino-naphthenic lubricant for the lubrication of engines employed in the propulsion of railway, marine and road transportation means. According to the invention, the lubricant comprises 78.5...87.5% by weight mineral oil having a viscosity of 4.1...18.0 mm2/s at the temperature of 100A C, a viscosity index ranging from 80 to 115 and the flow point between -6 and -15A C, 12...15% multi-purpose additive containing 30 ppm zinc, at the most, 0.3...0.5% depressant polymethacrylate additive or 0.5...7.0% viscosity modifier with additional depressing properties, the final product having 3...10 ppm zinc, 0.43...0.45% calcium, up to 0.0085% molybdenum, up to 3.66% chlorine and 0.07...0.10% nitrogen as active elements. Invenţia se referă la un lubrifiant parafinos sau parafino-naftenic, pentru ungerea motoarelor folosite la propulsia mijloacelor de transport feroviar, maritim şi rutier. Lubrifiantul conform invenţiei este constituit în greutate din 78,5...87,5% ulei mineral, cu viscozitatea de 4,1...18,0 mm2/s la temperatura de 100°C, indice de viscozitate80...115 şi punct de curgere -6...-15°C, 12...15% aditiv multifuncţional, având maximum 30 ppm zinc, 0,3...0,5% aditiv depresant, pe bază de polimetacrilat, sau 0,5...7,0% modificator de viscozitate cu proprietăţi suplimentare de depresare, produsul final având ca elemente active 3...10 ppmzinc, 0,43...0,45% calciu, până la 0,0085% molibden, până la 3,66% clor şi 0,07...0,10% azot.