Dual-Stage Compressor Bracket NVH Optimization for High-Performance 4x4 Electric Vehicles

The increasing demand for high-performance 4x4 electric vehicles (EVs) has necessitated advancements in Noise, Vibration, and Harshness (NVH) optimization, particularly in critical components such as compressor brackets. This study focuses on the NVH optimization of a dual-stage compressor bracket, comparing its performance against a conventional single-stage design. The dual-stage bracket is evaluated for isolation effectiveness, modal frequency alignment, and overall NVH performance, while ensuring compliance with stiffness and durability targets. Through finite element analysis (FEA) and experimental validation, the dual-stage bracket demonstrates superior vibration isolation, achieving a 30% reduction in transmitted forces compared to the single-stage design. Modal analysis reveals that the dual-stage configuration effectively shifts critical frequencies away from operational ranges, reducing resonance risks. Additionally, the dual-stage design meets stringent stiffness requirements, ensuring structural integrity under dynamic loads. The results highlight the dual-stage bracket's ability to address NVH challenges in high-performance 4x4 EVs, offering a robust solution for improving cabin comfort and vehicle refinement. This study provides valuable insights for engineers seeking to optimize NVH performance in EV powertrain components, emphasizing the trade-offs between isolation effectiveness, modal behavior, and structural stiffness. Keywords: NVH optimization, dual-stage compressor bracket, single stage bracket , electric vehicles.