A Review Paper on Recent Research of Noise and Vibration in Electric Vehicle Powertrain Mounting System

The Noise, Vibration, and Harshness (NVH) performance of automotive powertrain (PT) mounts involves the PT source vibration, PT mount stiffness, road input, and overall transfer path design. Like safety, performance, and durability driving dynamics, vehicle-level NVH also plays a major contributing factor for electric vehicle (EV) refinement. This article highlights the recent research on PT mounting-related NVH controls on electric cars. This work’s main contribution lies in the comparative study of the internal combustion engine (ICE)-based PT mounting and EV-based PT mounting system (PMS) with specific EV challenges. Various literature on PT mounts from the passive, semi-active, and active mounting systems are studied. The parameter optimization technique for mount stiffness and location by various research papers is summarized to understand the existing methodologies and research gap in EV application. The research contribution on the PT mount system design from the ICE to EV is studied for source, transfer path, and receiver. The noise factor in the EV is clearly shown, which is not there in the ICE. This study will help the design engineer to select a PMS at the concept stage of the development to avoid cost and timeline impact on the EV development program. This article also focuses on some of the recent work in this field to address specific PT mount-related NVH issues.