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首页> 外文期刊>SAE International Journal of Commercial Vehicles >Multiphase Drag Modeling for Prediction of the Drag Torque Characteristics in Disengaged Wet Clutches
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Multiphase Drag Modeling for Prediction of the Drag Torque Characteristics in Disengaged Wet Clutches

机译：多相阻力模型用于预测分离式湿式离合器的扭矩特性

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摘要

The undesired Drag Torque (DT) which is developed due to the shearing of fluid film in between the disk and separator plate reduces the efficiency of a transmission and increases the fuel consumption of a car. In order to minimize the transmission loss, the physics of the fluid flow mechanism inside the clutch should be understood well and the factors influencing the DT should be identified. In this paper, a model is proposed to predict the drag torque of a disengaged wet clutch at different rotation speeds, clearances, disk sizes and oil temperatures. The model explains well how the DT changes for the no groove disk, grooved disk and different ATF properties. The proposed model is validated by several experimental results conducted by a visualization tester and images of the fluid film taken during the test. Results show that there is a good degree of agreement between the DT trends derived from the proposed model and the test results for the same condition.
机译：由于在圆盘和隔板之间的流体膜的剪切而产生的不期望的拖曳扭矩（DT）降低了变速器的效率并增加了汽车的燃料消耗。为了最大程度地减少传递损失，应该很好地理解离合器内部流体流动机构的物理原理，并确定影响DT的因素。在本文中，提出了一个模型来预测分离的湿式离合器在不同的转速，间隙，盘尺寸和油温下的拖曳扭矩。该模型很好地说明了无槽盘，带槽盘和不同ATF属性的DT如何变化。通过可视化测试仪进行的几个实验结果以及测试过程中拍摄的液膜图像，验证了所提出的模型。结果表明，在相同条件下，从建议的模型得出的DT趋势与测试结果之间有很好的一致性。

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