Creation of stable nanosystems – one of the ways for enhancing the lubricating oil quality.

1. Creation of stable nanosystems – one of the ways for enhancingthe lubricating oil quality. Cand. Sc. (Techn.) S.B. Borshchevsky Dr. Sc. (Techn.) Professor A.S. Medjibovsky www.npp-qualitet.ru

2. Improvement of the internal combustion engine design. • Modern engines are operating in the mode of high temperatures and mechanical loads with enhanced gas recirculation. • Diesel engine capacity increase by 30-40 %. • Forced sump ventilation. • Enhanced speed of running in the suburbs. • Increased number of stop and go’s within the city. • Increased duration of automobile operation under both high-temperature and low-temperature conditions. • Due to the change in the engine design new requirements are placed upon engine oils. • Considerably higher oil change rates in the internal combustion engines. • Enhanced detergent-dispersive and anticorrosion engine oil property requirements.

3. Energy -efficient oils. • Fuel saving operation while using energy –efficient oil is achieved due to lower friction losses between the power train parts, in the crank-case bearings, in the gas distribution mechanism. • The friction losses are reduced by means of: • Reduction of the oil viscosity in permissible range. • Introduction of polymer additives (temporary viscosity reduction occurs with increase in the shear rate gradient). • Introduction of a friction modifier into the oil formulation. Friction modifier. • Dispersion of oil soluble molybdenum sulfide (MoS2), graphite, boron etc. compounds. • Oil-soluble molybdenum (e.g. PAF-4) compounds. • Nano-particles of boron compounds. • Boron-containing additives stabilized by dispersing compounds have been produced. • Result - fuel economy of 2,5 % and above.

4. Main trends in nanotechnologies in lubricants being developed by Qualitet company. • Creation of colloidally stable nano-dispersive Ca (Mg,K) carbonate systems by means of special metal oxide and hydroxide carbonation technologies. • Introduction of boron and molybdenum nanosystems into lubricating systems by means of maintaining them suspended using chemical compounds or surface-active agents in the size smaller than 50 nm. These systems exhibit enhanced antiwear, antifriction and antioxidation properties. • The exhaust gas recirculation causes formation of a great amount of carbon black-like particles. The introduced nano-dispersive boron-containing succinimides exhibiting higher dispersive antifriction and anticorrosion properties do not decompose under high temperatures; they are prohibiting clogging of the carbon-like particles facilitating their passing through the filter. The amount of low-temperature deposits is reduced. The oil system is maintained clean. A nano-dispersive system of carbon-like particles is formed.

5. High TBN detergent additives. Sulfonate(ArRSO3)2Ca CaCo3m Phenate(OC6H4RSn)2CaCaCo3m Salicilate (HOC6H4COO)2Ca CaCo3m

6. NPP Qualitet`s Sulfonate and alkyl phenol additives

7. NOx NOx SO2 SO2 O2 O2 CaCo3 CaCo3 (ArRSO3)2Ca (ArRSO3)2Ca CaCo3 CaCo3 CO2 CO2 CO2 CO2 Scheme of calcium sulfonate nano-dispersive micelle function Scheme of calcium sulfonate micelle function in the absence of nano-dispersive systems

8. Boron acid Crystal Lattice Boron acid “Rose”

9. Antiwear properties of oils with a nano-dispersive dithiophosphate additive. 1 2 3 К – friction coefficient

10. Antioxidation and anticorrosion properties of oils with a nano-dispersive boronated succinimide additive. 1 2 3 К- friction coefficient

11. Scheme of nano-dispersive boronated and non-boronated succinimides function in used oil Carbon black Carbon black Agglomerate The presence of a non-boronated succinimide Boronated succinimide Boronated succinimide Carbon black Carbon black The presence of a nano-dispersive boronated succinimide