Working Features Evaluation of the Diesel Engine Lubricated with Blends of Renewable Corn Oil and Carbon Nanotubes

Vegetable oils are one of the renewable resources that extracted from surplus or non-edible vegetables, instead of the conventional energy resources (fossil), because it’s close to be free and renewable and used in many applications such as lubricant oils in recent years. In this work, the performance of the four stroke single cylinder diesel engine are examined and evaluated experimentally using the non-edible corn oil as lubricant in instead of the mineral oil. Furthermore, the effect of disappearing multi-wall carbon nanotube (MWCNT) in this lubricant oil is tested experimentally with different concentration ratios 0.1, 0.2 and 0.3%. The tests are done with different operation conditions applied on engine such as different load and different engine speeds. The experimental results shows that the using of non-edible corn oil, leads to reduction in cylinder surface temperature and brake specific fuel consumption of the used internal combustion engine about 5 and 7% respectively, comparative with the used mineral oil. While the increasing in the brake thermal efficiency was 8%. MWCNT additives at 0.1,0.2 and 0.3% concentration ratios to non-edible corn oil gives improvement in the engine performance about 9,13 and 17% in reduction of cylinder surface temperature, 10.5, 13.5 and, 17% in reduction of brake specific fuel consumption, and 11,15 and 21% in increasing of brake thermal efficiency, respectively, oil comparative with the used mineral oil.