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Effect of Engine Oil Anticorrosion Characteristics on Multiple Wet Disk Brake in Off-road Dump Truck
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English
Abstract
Recently high copper concentration of used oils has been frequently detected in our oil analysis system, although any excessive wear of the copper parts in the engines and the power-train was not detected. We have found the copper comes from copper solder in the oil cooler. Thus we have investigated the copper corrosion characteristics of commercially available engine oils and power-train oils in a laboratory test. Most power-train oils did not show copper corrosion, however some engine oils showed large weight loss of a copper test piece. In a field test of off-road dump trucks, we have found that the copper, dissolved in the oil, caused glazing and friction reduction problem of the wet brake paper disk. To clarify the glazing mechanism of the disk, simulated bench tests and used oil analysis have been conducted.
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Citation
Mori, M., Mukai, K., Konishi, A., Uchino, I. et al., "Effect of Engine Oil Anticorrosion Characteristics on Multiple Wet Disk Brake in Off-road Dump Truck," SAE Technical Paper 961093, 1996, https://doi.org/10.4271/961093.Also In
References
- Fish Robert L. Truncone Samuel A. “Tracking Wet Friction Performance Via Energy Dispersive X-Ray Spectroscopy” SAE 941033
- McLain John A. “Oil Friction Retention Measured by Caterpillar Oil Test No.TO-2” SAE 770512
- Fujita et al “Lubricants Performance for Practical Use” 197 Saiwaishobo Ltd. 1975