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Abstract
The total power loss of gears was measured in a back-to-back gear test rig. Test equipment, measuring principle and evaluation of the data are described. The influence of different lubricant type, viscosity and temperature on mesh and churning losses was investigated. The churning losses depended mainly on the viscosity of the lubricant and on the operating conditions, not on the lubricant type. The mesh power loss depended mainly on the type of lubricant, not on viscosity, temperature, or oil additives.
Churning losses can be reduced by using low viscosity lubricants. Mesh power loss can be reduced by as much as 50 percent of the power loss of mineral oils by using polyglycol-type lubricants. In wide application ranges, viscosity and oil additives do not influence mesh power loss. An experimentally-based equation for the coefficient of friction in the gear mesh is given. Earlier derived equations for the mesh power loss of different gear geometry were confirmed.
Presented at the 48th Annual Meeting in Calgary, Alberta, Canada May 17–20, 1993
Notes
Presented at the 48th Annual Meeting in Calgary, Alberta, Canada May 17–20, 1993
