Lube oils are the viscous petroleum products used in automobiles to reduce the friction. The eventual fate of lube oil is either incineration or dumping off into ground, but these resources cannot be disposed off easily due to their libellous effects on environment. This article aims to study the regeneration of deteriorated oil and impact of regenerated oil on engine performance and engine emissions. The effectuality of regeneration is studied by comparing the results of the key parameters (specific gravity, viscosity, total acid number, flash point and ash contents) of regenerated oil with that of non-deteriorated and deteriorated oil. Engine performance and emissions for regenerated oil were compared with non-deteriorated and deteriorated oil. The brake power and torque increased by 4.1% and 4.6%, respectively, following the regeneration process. After re-refining of lube oil, specific gravity, flash point, kinematic viscosity, ash content and total acid number improved by 6.75%, 2.66%, 15.6%, 1.7% and 10.64%, respectively. In case of deteriorated oil, HC, NO_x and CO increased by 23.6%, 42.2% and 11.8%, respectively. But after regeneration of oil, these emissions decreased as compared with deteriorated oil. It can be reasoned out that regeneration mends oil properties and has positive impact over engine performance and emissions.

润滑油是汽车中用于减少摩擦的粘性石油产品。润滑油的最终命运要么是焚化，要么是倒入地下，但由于这些资源对环境的不良影响，这些资源不易处置。本文旨在研究退化机油的再生以及再生机油对发动机性能和发动机排放的影响。通过比较再生油与未劣化和劣化的油的关键参数（比重，粘度，总酸值，闪点和灰分）的关键结果，研究了再生的有效性。将再生油的发动机性能和排放与未劣化和劣化的油进行了比较。制动功率和扭矩分别增加了4.1％和4.6％，跟随再生过程。重新精炼润滑油后，比重，闪点，运动粘度，灰分和总酸值分别提高了6.75％，2.66％，15.6％，1.7％和10.64％。如果机油变质，HC，NO_x和CO分别增加了23.6％，42.2％和11.8％。但是，在再生油之后，与劣化的油相比，这些排放减少了。可以推断出再生会改善机油性能，并对发动机性能和排放产生积极影响。