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Development and Validation of an Automotive Axle Power Loss Model

机译:汽车轴功率损失模型的开发和验证

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摘要

This study proposes a methodology to predict power losses of automotive axle units, including both load-dependent (mechanical) and load-independent (spin) loss components. This methodology combines a mechanical hypoid gear mesh power loss model, a new tapered roller bearing mechanical power loss model, a gear drag loss model, and empirical viscous bearing power loss formulae to determine the total power loss of an axle unit. The proposed methodology captures the effects of operating conditions (speed and torque and oil temperature and level), contact surface roughness amplitudes, as well as bearing preload on power loss. The model is employed to simulate published axle efficiency experiments. Direct comparisons between measured and predicted power losses are presented to demonstrate the accuracy of the proposed modeling methodology.
机译:这项研究提出了一种预测汽车车轴单元功率损耗的方法,其中包括与负载有关的(机械)和与负载无关的(自旋)损耗组件。该方法结合了机械准双曲面齿轮啮合功率损耗模型,新的圆锥滚子轴承机械功率损耗模型,齿轮阻力损耗模型和经验粘性轴承功率损耗公式,以确定轴单元的总功率损耗。所提出的方法捕​​获了运行条件(速度和扭矩以及油温和油位),接触表面粗糙度幅度以及轴承预紧力对功率损耗的影响。该模型用于模拟已发布的车轴效率实验。提出了测量和预测的功率损耗之间的直接比较,以证明所提出的建模方法的准确性。

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