Investigation on Abnormal Gear Rattle Noise in Automated Manual Transmission (AMT) after Gear Upshifting

Abhishek Lakhanlal Vaishya, Archan Sunilbhai Pujara, Devendra Kumar Khare, Kingshuk Satpathy, Vivek Singh
2019 Proceedings of the ICA congress  
Customers are getting delighted after receiving best in class vehicle NVH performance. In order to enhance customer NVH comfort, a specific abnormal gear rattle noise phenomenon during product development was investigated. The transmission produces gear rattling noise by impacting gears, oscillating through the gear backlash. Similar noise was observed in one of the prototype vehicle with AMT, immediately after gear upshifting which sustained for some time and then became inaudible. In this
more » ... udible. In this case, the noise frequency band was found to be higher than the usual gear rattling frequency band. In this paper, along with the assessment methodology, root causes of this abnormal gear rattle noise will be elaborated.
doi:10.18154/rwth-conv-238899 fatcat:u6bfsblmizcwzeguoca5z3zj2a