针对液压齿轮泵困油问题，提出卸荷方法的新设想。
This article presents a new tentative idea for the discharge of the pocketed oil in the hydraulic gear pump.
随著齿轮啮合重合系数的减小，齿轮泵的流量增大，困油容积和流量脉动率减小。
If the coefficient of engagement overlap decreases, the flow aggrandize, trapping volume and the flow pulsating ratio decreases.
依据模型中是否考虑齿轮副的动力学分析，将困油模型分为静态模型和动态模型。
The simulation model of the trapped oil pressure is established in the paper, and the model is divided into static model and dynamic model according to with or without dynamic factor of gear pair.
困油现象是由齿轮泵自身工作原理造成的，它直接影响着齿轮泵的工作性能及寿命。
The phenomenon of oil-trap stems from the principle of gear pumps, and it affects directly the performance and life of the gear pumps.
齿轮泵转子的齿廓型线一般为渐开线，渐开线型线虽设计加工方便，但存在原理性的困油现象；
The tooth profile of gear pump is involute in general. Though the involute profile is easy to design and manufacture, it also brings the inherent problem of oil trapping.
详细分析了斜齿齿轮泵的瞬间排量、单齿排量、困油区容积的瞬间变化率及变化量、螺旋角的影响。
Analyze the Helical Gear Pump for the instant displacement, single gear displacement, theinstant change ratio and change value of trapping volume and the influnce of screw angle in detail.
采用数值模拟方法研究了含气比，侧板倾斜，有效体积模量，离心力和齿轮副的振动等因素对困油压力的影响。
The influence of percentage of gas in oil, slope of side plate, effective bulk modulus, and centrifugal force and gear pair vibration on trapped oil pressure is studied by numerical simulation.
利用直齿齿轮泵的困油容积变化公式，求出了斜齿齿轮泵的困油容积变化公式，得到了斜齿齿轮泵不发生困油的螺旋角。
According to the volume oil formula of the straight gear pump, the volume oil formula of the helical gear pump is got and the helix Angle no trapping is found.
通过分析 ，找出了齿轮油泵在运转过程中造成困油容积而形成功率损失、振动和噪声的原因 ，为设计和维修齿轮油泵提供了消除困油现象的方法和结构措施。
Based on the theory analysis, the reason was discovered of oil- blocking during the operation of a gear oil pump, which resulted in power loss, vibration and noise.
通过分析 ，找出了齿轮油泵在运转过程中造成困油容积而形成功率损失、振动和噪声的原因 ，为设计和维修齿轮油泵提供了消除困油现象的方法和结构措施。
Based on the theory analysis, the reason was discovered of oil- blocking during the operation of a gear oil pump, which resulted in power loss, vibration and noise.
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