共 3 条
Evaluation of thermo-oxidized Jatropha bio-oil in lubrication of actual wet clutch materials
被引:3
|作者:
Farfan-Cabrera, Leonardo, I
[1
]
Gallardo-Hernandez, Ezequiel A.
[2
]
Perez-Gonzalez, Jose
[3
]
Marin-Santibanez, Benjamin M.
[4
]
Lewis, Roger
[5
]
Gonzalez-Lamas, Ana K.
[2
]
机构:
[1] Tecnol Monterrey, Escuela Ingn & Ciencias, Ave Eugenio Garza Sada 2501, Monterrey, NL, Mexico
[2] Inst Politecn Nacl, SEPI Escuela Super Ingn Mecan & Elect, UP Adolfo Lopez Mateos, Grp Tribol, Mexico City, DF, Mexico
[3] Inst Politecn Nacl, Escuela Super Fis & Matemat, UP Adolfo Lopez Mateos, Lab Reol & Fis Mat Blanda, Mexico City, DF, Mexico
[4] Inst Politecn Nacl, Escuela Super Ingn Quim & Ind Extract, UP Adolfo Lopez Mateos, Mexico City, DF, Mexico
[5] Univ Sheffield, Dept Mech Engn, Sheffield, S Yorkshire, England
来源:
关键词:
Friction coefficient;
thermal degradation;
bio-oil;
wet clutch;
FRICTION CHARACTERISTICS;
VELOCITY SLIP;
FLUIDS;
PIN;
BIOLUBRICANTS;
PERFORMANCE;
BEHAVIOR;
D O I:
10.1177/1350650120981461
中图分类号:
TH [机械、仪表工业];
学科分类号:
0802 ;
摘要:
In this work, an assessment of the performance of thermo-oxidated Jatropha oil as a lubricant for actual wet clutch materials was performed and compared with a commercial automatic transmission fluid. For this, Jatropha oil, a commercial automatic transmission fluid and a blend of 20 vol% Jatropha oil-80 vol% automatic transmission fluid were subjected to thermo-oxidative aging at 26 degrees C and 100 degrees C, followed by a pin-on-disk testing with disk samples from an actual wet clutch. Evaluation of the film thickness at the sliding interface resulted in a boundary lubrication regime for all the tests. The changes in oxidation, viscosity, and a viscosity index of the samples were evaluated along with friction coefficients at various sliding speeds. Jatropha oil was the most sensitive to thermo-oxidation. Jatropha oil and the blend showed a higher viscosity increase than automatic transmission fluid with thermo-oxidation, while the viscosity index of all oils was decreased considerably, Jatropha oil and the blend being the most reduced. Finally, the anti-shudder property, as measured by the change in the friction coefficient with a sliding speed, of Jatropha oil and automatic transmission fluid was improved by thermo-oxidation at 26 degrees C but worsened at 100 degrees C, meanwhile it was barely affected in the blend. Therefore, these results indicate that using pure Jatropha oil as automatic transmission fluid would be unsuitable, but blending it with automatic transmission fluids in specific proportions may be apposite for improving the friction properties of wet clutches even under thermo-oxidative conditions.
引用
收藏
页码:2021 / 2033
页数:13
相关论文