【摘要】 大功率拖拉机作业时需要通过动力换挡或无级变速应对频繁波动的外界载荷，为实现拖拉机无级变速的驱动效果，提出拖拉机双流耦合动力系统构型替换传统无级变速箱的驱动方式，以驱动电机助力的形式实现无级变速。为说明双流耦合动力系统参数选取的可行性，以旋耕和犁耕作业项目为背景搭建MATLAB/Simulink仿真模型，说明了双流耦合动力系统参数选取的可行性。最后，通过仿真说明了双流耦合动力系统的特性。通过油电混动系统替换实现拖拉机的无级变速功能，缓解了大功率拖拉机对传统无级变速箱的依赖。更多还原

【Abstract】 During operation, high-power tractors necessitate the utilization of power shift mechanisms or continuously variable transmission(CVT) to adapt to the frequently oscillating external loads.To attain the CVT propulsion efficacy for tractors, a dual-flow coupled powertrain architecture is proposed, supplanting the conventional CVT drive methodology, thereby facilitating CVT functionality via the augmentation of a drive motor.To substantiate the viability of parameter selection for the dual-flow coupled powertrain, a simulation model was constructed within the MATLAB/Simulink environment, predicated on the operational paradigms of rotary tillage and plowing, thereby elucidating the feasibility of the parameter selection process.Conclusively, the intrinsic characteristics of the dual-flow coupled powertrain were explicated through simulation.The implementation of an oil-electric hybrid system in lieu of the traditional CVT has engendered the realization of CVT capabilities in tractors, thereby mitigating the dependency of high-power tractors on conventional CVT systems.更多还原