Statistical study of organomolybdenum compounds in an engine oil formulation and the results of engine testing

Tribotest ◽  
2001 ◽  
Vol 8 (1) ◽  
pp. 27-44 ◽  
Author(s):  
M. S. Saini ◽  
F. E. Lockwood ◽  
T. R. Smith ◽  
D. Pridemore ◽  
E. A. Grulke
1992 ◽  
Author(s):  
Alan Flamberg ◽  
Charles W. Hyndman ◽  
Warren H. Machleder

1998 ◽  
Author(s):  
Jagadish Sorab ◽  
Stefan Korcek ◽  
Charles Bovington

Author(s):  
Gabi Nehme

Tribology and solid mechanics are essential when studying engine lubrications. Very reproducible boundary lubrication tests were conducted as part of Design of Experiment software (DOE) to study the behavior of fluorinated mix in developing environmentally friendly (reduced P and S) anti-wear additives for future engine oil formulations using ball on cylinder testing protocol. In this study fully formulated oil and ZDDP plain oils were tested under the protocol of two cycles. A 100 rpm cycle was used for the first 5000 revolutions and a 700 rpm cycle was used until failure or 100000 revolutions whichever comes first. All tests were generated under extreme boundary lubrication (Hertzian contact pressure of 2.72 GPa). Design of Experiment (DOE) with 2 level factorial was used to investigate the failure and wear responses with respect to fluorinated mix interactions in plain and fully formulated oils. The two cycle’s tests indicate better performance than the one cycle test. Findings indicate that the most significant factors, affecting friction and wear are fluorinated mix concentrations together with oil formulation.


Author(s):  
C C Colyer

Today's high performance automotive engines would not operate effectively without the progressive advancements in engine oil formulation technology. A communications network between the engine builders, additive suppliers, petroleum companies, and consumers is essential in the continuous tailoring of engine oils to meet new engine requirements. The SAE/ASTM/API tripartite Engine oil performance and engine service classification system is recognized worldwide as a base for adding further requirements for various geographic areas. Attempts to develop one worldwide specification system have been thwarted by lack of unified agreement within, as well as between, the pertinent geographic areas of the world. In addition, worldwide specifications would not provide cost/performance optimization for areas not requiring each of the included engine oil parameters, and oil formulation compromises required to meet total world requirements could weaken oil performance in a specific area. As new engine designs place additional burdens on engine oils, the role of chemical additives to meet these demands increases. Revised engine oil evaluation tests are an associated need. Continued efforts toward elusive worldwide engine oil specifications will provide benefits by consolidating the number of expensive laboratory engine tests required to define engine oil performance.


Author(s):  
F. J. Owuna ◽  
M. U. Dabai ◽  
M. A. Sokoto ◽  
U. Z. Faruq ◽  
A. L. Abubakar

The engine oil market is faced with complex chemical reactions and difficult chemical engineering involved in the formulation of synthetic based engine oils, and therefore, the need to source for alternative base oils for engine oil formulation from vegetable oils has become urgent and inevitable. This research is aimed at formulation of lubricant using calabash seed oil (CSO). An experiment designed (Mixture Design Method using Minitab 17) was used to obtain the blend of CSO (28.75%), SN 500 (68.75%), and additive (2.50%) with improved physicochemical parameters. The lubricant obtained had kinematic viscosities 9.30±2.11 cSt (at 100°C) and 53.11±1.03 cSt (at 40°C), a viscosity index of 167±0.51, flash point of 240±2.01°C, and pour point of -28±1.31°C. The lubricant obtained in this research had quality parameters that are comparable to those of synthesised environmentally acceptable engine oils, and are within the standard for engine oils.


2002 ◽  
Author(s):  
Milton D. Johnson ◽  
Robert W. Mccabe ◽  
Carolyn P. Hubbard ◽  
Michael J. Riley ◽  
Charles W. Kirby ◽  
...  

2004 ◽  
Author(s):  
S.K. Mazumdar ◽  
A. Bhardwaj ◽  
G.C. Taneja ◽  
R.B. Koganti ◽  
G. Singh ◽  
...  

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