Can you discuss a time when you had to troubleshoot and solve a problem related to vehicle noise, vibration, or harshness?

Yes, I can discuss a time when I had to troubleshoot and solve a problem related to vehicle noise, vibration, or harshness. In my previous role, I was part of a team working on the design of an electric vehicle. During the testing phase, we noticed a significant vibration issue when the vehicle was in motion. To troubleshoot this problem, we conducted a thorough analysis of the vehicle's components and systems, including the suspension, tires, and electric motor. After extensive testing and analysis, we identified that the vibration was primarily caused by an imbalance in the electric motor. We then worked closely with the motor manufacturer to address the issue by recalibrating the motor's balance. This led to a significant reduction in the vibration, improving the overall quality of the vehicle's ride and reducing NVH levels.

Certainly! In my previous role as a Junior Automotive Engineer, I encountered a vehicle noise and vibration issue during the testing phase of a new SUV model. The problem was particularly evident when the vehicle was driven at higher speeds. To troubleshoot the issue, I collaborated with the design and engineering teams to conduct a comprehensive analysis of the vehicle's components and systems related to NVH. I used acoustic simulation software, such as LMS Virtual.Lab, to predict the acoustic behavior of the vehicle under various operating conditions. Through this analysis, we identified that the source of the noise and vibration was a resonance phenomenon caused by inadequate damping in the front suspension. To address the issue, I proposed design changes that included adjusting the suspension geometry and optimizing the damping characteristics. These changes were implemented and resulted in a significant reduction in noise and vibration levels, greatly improving the overall driving experience and meeting the NVH targets set for the vehicle.

Absolutely! Let me share a time when I encountered a complex vehicle noise, vibration, and harshness (NVH) problem while working on a luxury sedan project. During the prototype testing phase, we noticed an unusual noise and vibration issue coming from the rear of the vehicle when driving over rough road surfaces. As the lead Acoustic Simulation Engineer, I took charge of troubleshooting and solving this challenging problem. I started by conducting detailed measurements and analysis using advanced sensors and data acquisition systems. This allowed me to precisely capture the frequency and magnitude of the NVH issue. Next, I utilized my expertise in acoustic simulation and computational analysis to develop a comprehensive vehicle model that accurately replicated the different components and systems impacting NVH. By simulating various driving conditions and road surfaces, I identified that the problem was caused by resonance between the rear suspension system and the body structure. To address this, I collaborated with the design and engineering teams to explore design modifications and optimization techniques. This involved adjusting suspension geometry, tuning damper characteristics, and implementing additional structural reinforcements. Through iterative simulations and physical testing, we achieved a significant reduction in the noise and vibration levels, exceeding the NVH targets set for the vehicle. The successful resolution of this complex NVH problem was recognized by the management team and contributed to the overall market success of the luxury sedan.