Research on the vibration noise matching strategy of range-extended electric vehicle

Range-extended electric vehicles (REEVs) face more intricate noise, vibration, and harshness (NVH) challenges compared to traditional fuel and pure electric vehicles, primarily due to the complexities introduced by range extender control strategies. Poorly designed control logic can result in issues such as excessive noise during acceleration and engine roar, which are not only costly to rectify but also time-consuming. This article simplifies the theoretical model of range extender systems by treating the range extender as a single excitation source. By monitoring the vehicle's overall status, the system adjusts the output torque and crankshaft speed to evaluate the vibration and noise at critical points within the vehicle. This proactive approach helps to preemptively optimize NVH performance under various operating conditions, thereby minimizing the need for subsequent adjustments to the suspension, transmission, intake, and exhaust systems. As a result, it significantly reduces costs and accelerates the project's development timeline.