Example shows that contact ratio and overlap ratio has the effect on the volume oil and the flow pulsating ratio 本文用实例说明了齿轮啮合重合系数对齿轮泵性能参数的影响。
2.
Firstly the reason of interference of flank is analyzed and contact ratio and overlap ratio and the point of profile modification are calculated according to two conditions 本文首先分析了齿轮发生啮合干涉的原因，并分两种情况计算了了齿轮的重合系数和修形位置。
3.
Then a formula about flow of the gear pump and the coefficient of engagement overlap to find is obtained by area method . through analysis contact ratio and overlap ratio has the effect on the volume oil and the flow pulsating ratio 然后采用面积法求得齿轮泵流量与齿轮啮合重合系数的关系式，研究了齿轮啮合重合系数对齿轮泵困油和流量脉动率的影响。
