ENGINE SYSTEM AND METHOD OF CONTROLLING A TURBOCHARGER IN AN ENGINE SYSTEM

The invention relates to an engine system and a method of controlling a turbocharger in the engine system. Systems and methods for controlling turbocharger operation by maintaining a virtual turbocharger speed calculation using airflow parameters in the environment of an engine. Examples use a turbocharger speed estimator, an energy observer, and an energy controller. Optimization of turbocharger speed control, including avoidance of overspeeds while reducing wastegate actuation, may be achieved using predictive control algorithms. 本发明涉及发动机系统和控制发动机系统中的涡轮增压器的方法。用于通过在发动机的环境中使用气流参数维持虚拟涡轮增压器速度计算来控制涡轮增压器操作的系统和方法。示例使用涡轮增压器速度估计器、能量观测器和能量控制器。涡轮增压器速度控制的优化，包括避免超速，同时减少废气门致动，可使用预测控制算法来实现。