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Experimental study and analysis of lubricants dispersed with nano Cu and TiO2 in a four-stroke two wheeler.

Sarma PK, Srinivas V, Rao VD, Kumar AK - Nanoscale Res Lett (2011)

Bottom Line: The empirical relation correlates with the observed data with reasonable accuracy.Further, extension of the analysis by developing a mathematical model has revealed a definite improvement in brake thermal efficiency which ultimately affects the fuel economy by diminishing frictional power in the system with the introduction of nanoparticles into the lubricant.The performance of the engine seems to be better with nano Cu-Racer-4 combination than the one with nano TiO2.

View Article: PubMed Central - HTML - PubMed

Affiliation: GITAM University, Visakhapatnam 530045, India. sarmapk@yahoo.com.

ABSTRACT
The present investigation summarizes detailed experimental studies with standard lubricants of commercial quality known as Racer-4 of Hindustan Petroleum Corporation (India) dispersed with different mass concentrations of nanoparticles of Cu and TiO2. The test bench is fabricated with a four-stroke Hero-Honda motorbike hydraulically loaded at the rear wheel with proper instrumentation to record the fuel consumption, the load on the rear wheel, and the linear velocity. The whole range of data obtained on a stationery bike is subjected to regression analysis to arrive at various relationships between fuel consumption as a function of brake power, linear velocity, and percentage mass concentration of nanoparticles in the lubricant. The empirical relation correlates with the observed data with reasonable accuracy. Further, extension of the analysis by developing a mathematical model has revealed a definite improvement in brake thermal efficiency which ultimately affects the fuel economy by diminishing frictional power in the system with the introduction of nanoparticles into the lubricant. The performance of the engine seems to be better with nano Cu-Racer-4 combination than the one with nano TiO2.

No MeSH data available.


Related in: MedlinePlus

Configuration of lubricant film.
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Figure 15: Configuration of lubricant film.

Mentions: The results in Figures 7, 10, and 13 indicate that the frictional power is profoundly influenced due to the inclusion of nano Cu and TiO2 in the lubricant. The reason for such a decrease in the frictional power can be due to two factors, viz., either due to frictional coefficient or may be due to the geometric changes in the lubricant film gap thickness. Hence, to establish the plausible reasons, the problem is conceptually formulated with the aid of hydrodynamic lubrication theory. In practice, the rubbing surfaces between the liner and the piston ring cannot be parallel but the gap in between is varying with the lubricant medium in the film facilitating load bearing. Hence, subsequently from theoretical considerations, the likely reasons are investigated. In Figure 15, the lubricant film is geometrically idealized, and the equation of motion of the lubricant film is defined considering the viscous forces and pressure forces.


Experimental study and analysis of lubricants dispersed with nano Cu and TiO2 in a four-stroke two wheeler.

Sarma PK, Srinivas V, Rao VD, Kumar AK - Nanoscale Res Lett (2011)

Configuration of lubricant film.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC3211292&req=5

Figure 15: Configuration of lubricant film.
Mentions: The results in Figures 7, 10, and 13 indicate that the frictional power is profoundly influenced due to the inclusion of nano Cu and TiO2 in the lubricant. The reason for such a decrease in the frictional power can be due to two factors, viz., either due to frictional coefficient or may be due to the geometric changes in the lubricant film gap thickness. Hence, to establish the plausible reasons, the problem is conceptually formulated with the aid of hydrodynamic lubrication theory. In practice, the rubbing surfaces between the liner and the piston ring cannot be parallel but the gap in between is varying with the lubricant medium in the film facilitating load bearing. Hence, subsequently from theoretical considerations, the likely reasons are investigated. In Figure 15, the lubricant film is geometrically idealized, and the equation of motion of the lubricant film is defined considering the viscous forces and pressure forces.

Bottom Line: The empirical relation correlates with the observed data with reasonable accuracy.Further, extension of the analysis by developing a mathematical model has revealed a definite improvement in brake thermal efficiency which ultimately affects the fuel economy by diminishing frictional power in the system with the introduction of nanoparticles into the lubricant.The performance of the engine seems to be better with nano Cu-Racer-4 combination than the one with nano TiO2.

View Article: PubMed Central - HTML - PubMed

Affiliation: GITAM University, Visakhapatnam 530045, India. sarmapk@yahoo.com.

ABSTRACT
The present investigation summarizes detailed experimental studies with standard lubricants of commercial quality known as Racer-4 of Hindustan Petroleum Corporation (India) dispersed with different mass concentrations of nanoparticles of Cu and TiO2. The test bench is fabricated with a four-stroke Hero-Honda motorbike hydraulically loaded at the rear wheel with proper instrumentation to record the fuel consumption, the load on the rear wheel, and the linear velocity. The whole range of data obtained on a stationery bike is subjected to regression analysis to arrive at various relationships between fuel consumption as a function of brake power, linear velocity, and percentage mass concentration of nanoparticles in the lubricant. The empirical relation correlates with the observed data with reasonable accuracy. Further, extension of the analysis by developing a mathematical model has revealed a definite improvement in brake thermal efficiency which ultimately affects the fuel economy by diminishing frictional power in the system with the introduction of nanoparticles into the lubricant. The performance of the engine seems to be better with nano Cu-Racer-4 combination than the one with nano TiO2.

No MeSH data available.


Related in: MedlinePlus