新型双转子发动机功率传输装置的运动学特性

提出一种基于摆盘和凸轮组合机构的双转子发动机功率传输装置。其结构简单、布置方式完全对称，平衡性好，能够通过凸轮控制转子的运动规律。为分析和研究该机构的运行特性，通过欧拉法建立该机构的基本运动学模型，计算出其运行轨迹，凸轮轮廓线等。分析了主要结构参数，如滚子轴线夹角和摆盘倾角，对其容积变化规律的影响。主要结论如下：滚子轴线夹角越靠近90°，气缸容积变化幅值越大。摆盘倾角与容积变化规律是成正比的，对于四叶片活塞转子而言，摆盘倾角最大取值约为65°。在实际中，滚子轴线夹角最好取90°，摆盘倾角要在留出足够叶片活塞厚度的前提下尽量取较大的值。
A power transmission mechanism of twin-rotor engine based on wobble plate and cam was proposed. The advantages of the power transmission mechanism of twin-rotor engine based on wobble plate and cam are simple structure, completely symmetrical arranged, good balance, and the movement is controllable. For analyzing its operating characteristics, the basic kinematic model was established by Euler-equation, and its trajectory and cam contour lines were obtained. Effects on volume variation of the main structural parameters, such as plate inclination angle and roller axis angle were analyzed. Main results are as follows: the closer to 90° roller axis angle is, the larger volume variation is. Plate inclination angle is proportional to volume variation. For 4-blade pistons rotor, the maximum plate inclination angle is approximately 65°. In practice, the best roller axis angle is 90°, plate inclination angle should be large enough after taking the thickness of blade piston into account.