Air path system control of turbocharged gasoline engine based on fuzzy PID

This paper focuses on the modeling and control of a turbocharged gasoline engine air path system. Firstly, based on mean value modeling theory, a turbocharged engine air path model is developed according to its structure characteristics and actual working process. Secondly, aiming to achieve the desired engine torque, the desired engine torque is transformed into the corresponding intake manifold pressure via maps. Thirdly, based on fuzzy PID control algorithm, the throttle and wastegate controllers are designed to track the intake manifold pressure, and then the torque demand can be satisfied through the throttle and wastegate control. Finally, the effectiveness of the proposed control system is verified and the control performance is presented by the experimental results.