考虑动力系功率损失和CVT响应滞后集成发动机—CVT控制的性能

Performance of Integrated Engine-CVT Control Considering Powertrain Loss and CVT Response Lag

本文考虑由于 CVT速比变化引起动力系功率损失和惯性转矩推荐了一种集成发动机一无级变速器( CVT)控制算法。此外还提出了减少 CVT速比响应滞后对驱动转矩影响的补偿算法。实验结果表明 ,最佳发动机速度补偿算法给出最佳发动机工作点在最佳工作线附近。当加速度响应接近相等时和最佳转矩补偿比较。建议把集成发动机— CVT控制算法的特点和传统 CVT相比较 。

In this paper, an integrated engine continuously variable transmission (CVT) control algorithm is suggested by considering the powertrain loss and the inertia torque due to the CVT ratio change. In addition, compensation algorithms to reduce the effect of the CVT ratio response lag on the drive torque are presented. Experimental results show that the optimal engine speed compensation algorithm gives better engine operation around the optimal operation line compared with the optimal torque compensation while showing nearly the same acceleration response. The performance of the proposed integrated engine CVT control algorithms is compared with that of conventional CVT control, and it is found that better engine operation on the optimal operation line can be achieved by using integrated control during acceleration.