Abstract
The main cause of power loss or dissipation of heat in case of meshed gears is due to friction existing between gear tooth mesh and is a major concern in low rotational speed gears, whereas in case of high operating speed the power loss taking place due to compression of air-lubricant mixture (churning losses) and windage losses due to aerodynamic trial of air lubricant mixture which controls the total efficiency needs to be considered. Therefore, in order to improve mechanical efficiency it is necessary for gear designer during gear tooth optimization to consider these energy losses. In this research paper the power loss analysis for a tooth-sum of 100 altered by ±4% operating between a specified center distance is considered. The results show that negative altered tooth-sum gearing performs better as compared to standard and positive altered tooth-sum gearing.
Highlights
The windage power loss due to aerodynamic trial of air lubricant mixture is one of the important aspects which need to be considered in gear transmission systems at high speeds during optimization of gear tooth shape
In this context Fakher chaari et al, [1] have studied the windage power loss in spur gear sets and they concluded that windage power loss is a complex phenomenon and depends upon rotational speed, shape of tooth, number of tooth and module
They developed a mathematical model in order to determine efficiency considering lubricant, surface finish and operating conditions and concluded that sliding friction, rolling friction and windage losses are the main source of power loss in gearing
Summary
The windage power loss due to aerodynamic trial of air lubricant mixture is one of the important aspects which need to be considered in gear transmission systems at high speeds during optimization of gear tooth shape. They developed a mathematical model in order to determine efficiency considering lubricant, surface finish and operating conditions and concluded that sliding friction, rolling friction and windage losses are the main source of power loss in gearing
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