减振槽型式对转向叶片泵配流冲击的影响

动力转向叶片泵的噪声对汽车舒适性产生不利影响，其中配流冲击是叶片泵的重要噪声源。优化减振槽结构是降低配流冲击的有效措施。从分析叶片工作腔压力变化出发，建立了预升压微分方程，计算了三种减振槽的预升压和压力梯度，给出了预升压和压力梯度曲线。结果表明，采用变截面和等截面减振槽并联而成的复合结构可以显著地降低配流冲击。

Influence of silencing groove geometry on pressure transient within steering vane pump

The comfort performance of vehicle is influenced by the fluid-born noise of steering pump, in which the pressure transient is the most important noise. To optimize the geometry of the silencing groove in valve plate of pump is the most effective means. Staring from the analysis to the pressure varying process in working chamber, a pre-compression differential equation was established, and the pre-compression pressure and pressure gradient of three type grooves was calculated. It is shown that the combination of sloping groove and constant-section groove in parallel can decrease the pressure impact significantly.