Effect of Water on Overbased Sulfonate Engine Oil Additives

Langmuir ◽  
2008 ◽  
Vol 24 (8) ◽  
pp. 3807-3813 ◽  
Author(s):  
J. W. Tavacoli ◽  
P. J. Dowding ◽  
D. C. Steytler ◽  
D. J. Barnes ◽  
A. F. Routh
Keyword(s):  
Engine Oil ◽  
Effect Of Water ◽  
Oil Additives ◽  
Overbased Sulfonate

Abnormal Combustion Induced by Combustion Chamber Deposits Derived from Engine Oil Additives in a Spark-Ignited Engine

2014 ◽  
Vol 8 (1) ◽  
pp. 200-205 ◽  
Author(s):  
Kazushi Tamura ◽  
Toshimasa Utaka ◽  
Hideki Kamano ◽  
Norikuni Hayakawa ◽  
Tomomi Miyasaka ◽  
...  
Keyword(s):  
Combustion Chamber ◽  
Engine Oil ◽  
Oil Additives ◽  
Combustion Chamber Deposits

Nanoscale Studies of the Role of ZDDPs in the Wear Protection in the Automobile Engine

2007 ◽  
Author(s):  
P. R. Norton ◽  
Gavin Pereira ◽  
Yue-Rong Li ◽  
Andreas Lachenwitzer ◽  
Masoud Kasrai ◽  
...  
Keyword(s):  
Automobile Industry ◽  
Fuel Efficiency ◽  
Cost Savings ◽  
Engine Oil ◽  
Protective Film ◽  
Oil Additives ◽  
Wear Protection ◽  
Alternative Materials ◽  
Dialkyl Dithiophosphates

The improvement of fuel consumption is an important driving force for research and development in the automobile industry in order to minimize greenhouse gas emissions as well as improving fuel economy. Aluminum alloys are a class of alternative materials that are being used to replace cast iron in motor components due to the concomitant weight savings which result in improved fuel efficiency, and cost savings. Our research focuses on these alternative Al-based alloys as well as traditional steel interfaces, and the protective films that form on the surfaces. Currently the zinc dialkyl-dithiophosphates (ZDDPs) have been used as engine oil additives for over 60 years. They are important chemically-active additives, known for their antioxidant and antiwear characteristics. ZDDPs are known to form a protective film (tribofilms) at rubbed surfaces, typically on iron containing metals surfaces commonly used in the automotive industry; however ZDDPs and the products formed are not well suited for the environment as they can readily poison the catalytic converters and their efficacy on Al-Si alloys is not well established.

Studies On Competitive Interactions and Blending Order of Engine Oil Additives by Variable Temperature31P-NMR and IR Spectroscopy

1999 ◽  
Vol 42 (4) ◽  
pp. 807-812 ◽  
Author(s):  
G. S. Kapur ◽  
A. Chopra ◽  
A. S. Sarpal ◽  
S. S. V. Ramakumar ◽  
S. K. Jain
Keyword(s):  
Ir Spectroscopy ◽  
Competitive Interactions ◽  
Engine Oil ◽  
Oil Additives

Interactions of Engine Oil Additives

1983 ◽  
Vol 26 (2) ◽  
pp. 189-199 ◽  
Author(s):  
Kiyoshi Inoue ◽  
Harumichi Watanabe
Keyword(s):  
Engine Oil ◽  
Oil Additives

Effects of Engine Oil Additives and Carbon Particles on Valve Train Wear of Diesel Engines

1983 ◽  
Author(s):  
Tomio Yoshihara ◽  
Tetsuo Wakizono ◽  
Hiromichi Hara ◽  
Eiichi Nakagawa
Keyword(s):  
Diesel Engines ◽  
Valve Train ◽  
Engine Oil ◽  
Carbon Particles ◽  
Oil Additives

Influence of New Engine Oil Additives on the Properties of Fluoroelastomers

1998 ◽  
Author(s):  
Koichi Kurono ◽  
Kenyu Akiyama ◽  
Miwako Shionoya
Keyword(s):  
Engine Oil ◽  
Oil Additives

scholarly journals Interactions between engine oil additives.

1981 ◽  
Vol 24 (2) ◽  
pp. 101-107 ◽  
Author(s):  
Kiyoshi INOUE ◽  
Harumichi WATANABE
Keyword(s):  
Engine Oil ◽  
Oil Additives

The effects of engine oil additives on valve train wear

1989 ◽  
Vol 1 (4) ◽  
pp. 365-384 ◽  
Author(s):  
S. Shirahama ◽  
M. Hirata
Keyword(s):  
Valve Train ◽  
Engine Oil ◽  
Oil Additives

Enhancement of cold flow property of coconut oil by alkali esterification process and development of a bio-lubricant oil

2017 ◽  
Vol 232 (3) ◽  
pp. 307-314 ◽  
Author(s):  
K Joseph Babu ◽  
Anna S Kynadi ◽  
ML Joy ◽  
K Prabhakaran Nair
Keyword(s):  
Tribological Properties ◽  
Coconut Oil ◽  
Ethylene Vinyl Acetate ◽  
Flow Property ◽  
Fatty Acid Esters ◽  
Engine Oil ◽  
Cold Flow ◽  
Oil Additives ◽  
Cold Flow Property ◽  
Stroke Engine

The low cold flow property of the coconut oil restricts its tribological applications as a lubricant. The flow property at low temperature was improved by removing the glycerol molecules from the oil thereby converting the fatty acids into esters by the process of alkali esterification. Free movement of these fatty acid esters have improved the cold flow properties of the oil from 26.8 ℃ to −4.5 ℃, but have an inverse effect of reduction on the tribological properties when compared to crude coconut oil. Additives such as tricresyl phosphate, oleic acid, and ethylene vinyl acetate were used to improve the anti-wear, anti-friction properties, and viscosity, respectively. The combined action of the additives have further improved the flow property to −6.9 ℃ and other tribological properties such as coefficient of friction and wear was reduced up to 12.8% and 2.3% respectively when compared to commercial two-stroke engine oil. Environmental hazards due to the exposure of newly formulated two-stroke engine oil were studied using bacteria ( B cereus and E coli). These results establish that the newly formulated oil is nontoxic and have comparable tribological properties to that of commercial two-stroke engine oil.

scholarly journals Researches of liquid contaminants influence on change of hardness of agricultural tyre tread

2016 ◽  
Vol 61 (No. 1) ◽  
pp. 14-20
Author(s):  
M. Müller ◽  
P. Novák
Keyword(s):  
Diesel Oil ◽  
Engine Oil ◽  
Surface Layers ◽  
Effect Of Water ◽  
Hardness Change ◽  
Npk Fertilizer ◽  
Degradation Medium ◽  
Specific Degradation ◽  
Fertilizer Solution

Tyres represent the only element which connects a vehicle with a roadway and they are one of the most important parts of the vehicle. Investigated samples from chosen agricultural tyres were placed into a degradation medium. Degradation media were chosen on the basis of their supposed application; the second criterion of the choice was operating liquids used in machines. A primary aim was defining a change of hardness of these samples; the second-rate aim was observing changes of a tyre weight. The aim of the research is an evaluation of the hardness change in surface layers of a tread depending on specific degradation environments to which the tyre is potentially exposed. The highest influence on the hardness was proved in the case of diesel oil and engine oil. Any essential influence of NPK fertilizer solution was not proved. The effect of water and a solution of NaCl on the hardness change was minimal.

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