Experimental assessment of regenerated lube oil in spark-ignition engine for sustainable environment

Abstract

<jats:p> 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<jats:sub>x</jats:sub> 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. </jats:p>

Experimental evaluation of methanol-gasoline fuel blend on performance, emissions and lubricant oil deterioration in SI engine

“…TAN is proportional to the oxidation of lubricant oil and it is also responsible for changing chemical composition and physicochemical properties of lubricant oil. 70 Flash point is minimal threshold temperature at which the vapours of lubricant oil will instantly combust once provided with an ignition source. ASTM D92 standard was followed to measure the flash point of lubricant oils.…”

Electrochemical Investigations of BaCe0.7-xSmxZr0.2Y0.1O3-δ Sintered at a Low Sintering Temperature as a Perovskite Electrolyte for IT-SOFCs

“…Moreover, doping of Sm ions substituted the Ce ions and volume expansion [28]. This volume change may also occur because of the mism ionic radii of the host and the dopant material [23,29]. The magnified (002) peaks for all the prepared compositio BaCe0.7-xSmxZr0.2Y0.1O3-δ are shown in Figure 3.…”

“…Moreover, doping of Sm ions substituted the Ce ions and caused volume expansion [28]. This volume change may also occur because of the mismatched ionic radii of the host and the dopant material [23,29].…”

“…It has also been reported that an appropriate dopant level of samarium is necessary because the high doping ratio of Sm increases the lattice distortion [22]. Mostly, the lanthanide materials in the perovskite structure partition over the A and B sites, which decreases the oxygen vacancies and, therefore, ionic conductivity decreases [23]. It is also reported that doping in a barium cerate proton-conducting electrolyte leads to larger grain sizes and reduces the contribution of ions to the facial area [24].…”

Refining and Reuse of Waste Lube Oil in SI Engines: A Novel Approach for a Sustainable Environment

“…In providing the services mentioned, the properties of lubricating oil alter significantly from the optimum values due to fluctuations in temperature and contamination by dust, metal pieces, and soot. Researchers have extensively used the additive method over the past few years to mitigate this issue [2][3][4]. The engine oil, being in operation for a specific time, must be periodically changed to ensure efficient performance.…”