Aiming at the asymmetric helical gear injection lubrication, simulation models for coast flank and drive flank injections were established by computational fluid dynamics (CFD). Firstly, the two oil injection methods of the asymmetric helical gear were explained. Then, a mathematical calculation model suitable for gear injection lubrication analysis was established. Finally, the model is simulated by CFD software. The oil volume fraction and pressure at the meshing point during the gear meshing process of the two injection models are obtained. The effects of gear speeds and spray velocities on the oil volume fraction and pressure are analysed. By comparing the two oil injection methods, when the spray velocity is more than 2.7 times the pitch line velocity, better lubrication is obtained by the drive flank injection method. When the spray velocity is less than 2.7 times the pitch line velocity, the coast flank injection method can achieve better lubrication.

中文翻译：

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基于CFD方法的非对称斜齿轮润滑特性研究

针对非对称斜齿轮注射润滑，通过计算流体力学（CFD）建立了滑行侧翼和驱动侧翼喷射的仿真模型。首先，介绍了非对称斜齿轮的两种注油方法。然后，建立了适合齿轮注射润滑分析的数学计算模型。最后，通过CFD软件对模型进行仿真。获得了两个喷射模型的齿轮啮合过程中啮合点处的油体积分数和压力。分析了齿轮转速和喷雾速度对机油体积分数和压力的影响。通过比较两种注油方法，当喷雾速度大于节距线速度的2.7倍时，通过驱动侧翼注入方法可获得更好的润滑。