Application of Shainin DoE tool to Explore Unknown Variables causing 'Ghost Noise' in 5th Gear Cycle of Transaxles during NVH Testing

摘要

As the automotive industry is growing at an increasing pace today, there is severe competition and pressure to produce vehicles, which meet the ever increasing expectations of the consumers. The demand for increased vehicular refinement ensures that many manufacturers implement stringent Noise, Vibration and Harshness (NVH) testing. This study focuses on the analysis done at an automotive manufacturer 'M', on the transaxles used in a certain hatchback model. The attempt was to resolve the issue of a high pitched 'ghost noise' origination from the transaxle heard during the 5th Gear cycle at the End of assembly Line (EOL) testing. A DOE tool associated with Shainin Methodology, namely Component Search was applied to find the root cause of the problem.