Influence of Oil Viscosity, Chemical Oil Structure, and Chemical Additives on Friction Loss of Spur Gears (Concerning the Influence of Synthetic Oil and Mineral Oil)

1994 ◽  
Vol 37 (2) ◽  
pp. 358-368 ◽  
Author(s):  
Chotaro Naruse ◽  
Ryozo Nemoto ◽  
Shoji Haizuka ◽  
Masatoshi Yoshizaki
Keyword(s):  
Mineral Oil ◽  
Friction Loss ◽  
Spur Gears ◽  
Chemical Additives ◽  
Oil Viscosity ◽  
Synthetic Oil

scholarly journals Influences of Tooth Form and Load on Friction Loss of Spur Gears. In the case of Synthetic Oil and Mineral Oil.

1991 ◽  
Vol 57 (542) ◽  
pp. 3378-3385
Author(s):  
Masatoshi YOSHIZAKI ◽  
Chotaro NARUSE ◽  
Ryozo NEMOTO ◽  
Shoji HAIZUKA
Keyword(s):  
Mineral Oil ◽  
Friction Loss ◽  
Spur Gears ◽  
Synthetic Oil ◽  
Tooth Form

scholarly journals Decoupling of Mechanical and Transport Properties in Organogels via Solvent Variation

Gels ◽  
2021 ◽  
Vol 7 (2) ◽  
pp. 61
Author(s):  
Kenneth P. Mineart ◽  
Cameron Hong ◽  
Lucas A. Rankin
Keyword(s):  
Mechanical Properties ◽  
Mechanical Behavior ◽  
Transdermal Drug Delivery ◽  
Triblock Copolymer ◽  
Polymer Concentration ◽  
Mineral Oil ◽  
Solute Diffusion ◽  
Oil Viscosity ◽  
Chain Entanglement ◽  
Mineral Oils

Organogels have recently been considered as materials for transdermal drug delivery media, wherein their transport and mechanical properties are among the most important considerations. Transport through organogels has only recently been investigated and findings highlight an inextricable link between gels’ transport and mechanical properties based upon the formulated polymer concentration. Here, organogels composed of styrenic triblock copolymer and different aliphatic mineral oils, each with a unique dynamic viscosity, are characterized in terms of their quasi-static uniaxial mechanical behavior and the internal diffusion of two unique solute penetrants. Mechanical testing results indicate that variation of mineral oil viscosity does not affect gel mechanical behavior. This likely stems from negligible changes in the interactions between mineral oils and the block copolymer, which leads to consistent crosslinked network structure and chain entanglement (at a fixed polymer concentration). Conversely, results from diffusion experiments highlight that two penetrants—oleic acid (OA) and aggregated aerosol-OT (AOT)—diffuse through gels at a rate inversely proportional to mineral oil viscosity. The inverse dependence is theoretically supported by the hydrodynamic model of solute diffusion through gels. Collectively, our results show that organogel solvent variation can be used as a design parameter to tailor solute transport through gels while maintaining fixed mechanical properties.

Study on the Safety of Mineral and Synthetic Oil Added Commonly Used Extreme Pressure Additives

2012 ◽  
Vol 430-432 ◽  
pp. 1386-1389
Author(s):  
Zhuo Jun Chen ◽  
Long Long Feng ◽  
Bao Liang Li ◽  
Jin Jin Yue ◽  
Ying Liang Wu ◽  
...  
Keyword(s):  
Acute Toxicity ◽  
Toxicity Test ◽  
Mineral Oil ◽  
Stimulation Test ◽  
Toxicity Tests ◽  
Acute Toxicity Test ◽  
Base Oil ◽  
Synthetic Oil ◽  
Four Levels ◽  
Oral Acute Toxicity

This article use the Sulphide Isobutene (T321), Five Sufides Dialkyl(RC2540) and Star of Phosphorus(P110) as the additives,Neopentyl Polyol Ester(NPE) and mineral oil N32 as base oil. Compound above additives and base oil for the four levels. A sample: adding 4% T321 additive in NPE. B sample: adding 4% T321 additive in N32. C sample: adding 4% RC2540 additive in NPE. D sample: adding RC2540, T321 and P110 additives in NPE (all is mass fraction). The oral acute toxicity test, eye mucous stimulation test, skin hypersensitive test, soaking tail toxicity tests were conducted in above samples. The test results show that. The mineral oil, it’s not only toxic then synthetic oil but also has a poor lubricating ability compare with the same percent additive in synthetic oil. In oral acute toxicity test, eye mucous stimulation test, skin hypersensitive test, soaking tail toxicity tests, Toxic reaction of mineral N32+4%wt Sulphide Isobutene (T321) obviously from other oil samples.

Scuffing Initiation, Scuffing Propagation and Pitting of a Four-Ball Tribosystem Lubricated With Mineral and Synthetic Oils

2005 ◽  
Author(s):  
Waldemar Tuszynski ◽  
Witold Piekoszewski ◽  
Marian Szczerek
Keyword(s):  
Sliding Friction ◽  
Mineral Oil ◽  
Oil Viscosity ◽  
Polyol Ester ◽  
Base Oils ◽  
Synthetic Hydrocarbon ◽  
Hydrocarbon Oil

The research aimed at finding an effect of various base oils on the scuffing initiation, scuffing propagation and pitting. The following base oils were tested: mineral oil, synthetic hydrocarbon oil (polyalphaolefins), synthetic non-hydrocarbon oils (polyol ester, polyglycol) and highly refined mineral one known as a white oil. The tests were performed in two different four-ball testers. One was used to investigate scuffing at pure sliding friction. The second instrument was employed to test pitting at rolling movement. To avoid an effect of the oil viscosity, base oils having similar viscosities ν100 (3,8 – 5,5 mm2 s−1) were compared. In this group the highest load causing the scuffing initiation is given by the polyglycol, and the lowest one — by polyalphaolefins and white oil. The scuffing propagation is similar for all the oils. The best resistance to pitting is given by the mineral oil, and the worst — by the white oil.

scholarly journals Studies on Friction Loss of Spur Gears. Effect of Viscosity of Lubricating Oils and Tooth Forms.

1999 ◽  
Vol 42 (4) ◽  
pp. 1041-1049 ◽  
Author(s):  
Shoji HAIZUKA ◽  
Takaaki KIKUSAKI ◽  
Chotaro NARUSE
Keyword(s):  
Friction Loss ◽  
Spur Gears ◽  
Lubricating Oils

Influence of Tooth Profile Error on Friction Loss and Noise of Spur Gears

2003 ◽  
Vol 2003 (0) ◽  
pp. 249-250
Author(s):  
Shingo KIZAWA ◽  
Shoji HAIZUKA ◽  
Hiroshi TADOKORO
Keyword(s):  
Tooth Profile ◽  
Friction Loss ◽  
Spur Gears ◽  
Profile Error

scholarly journals Baseline Experimental Results on the Effect of Oil Temperature on Shrouded Meshed Spur Gear Windage Power Loss

2017 ◽  
Author(s):  
Irebert R. Delgado ◽  
Michael J. Hurrell
Keyword(s):  
Experimental Test ◽  
Power Loss ◽  
Spur Gear ◽  
Spur Gears ◽  
Test Results ◽  
Oil Viscosity ◽  
Gear Teeth ◽  
Temperature Load ◽  
Loss Efficiency

Rotorcraft gearbox efficiencies are reduced at increased surface speeds due to viscous and impingement drag on the gear teeth. This windage power loss can affect overall mission range, payload, and frequency of transmission maintenance. Experimental and analytical studies on shrouding for single gears have shown it to be potentially effective in mitigating windage power loss. Efficiency studies on unshrouded meshed gears have shown the effect of speed, oil viscosity, temperature, load, lubrication scheme, etc. on gear windage power loss. The open literature does not contain experimental test data on shrouded meshed spur gears. Gear windage power loss test results are presented on shrouded meshed spur gears at elevated oil inlet temperatures and constant oil pressure both with and without shrouding. Shroud effectiveness is compared at four oil inlet temperatures. The results are compared to the available literature and follow-up work is outlined.

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