CATARC New Type Drivetrain NVH Test Facility 2019-01-0788

A vehicle’s NVH performance has a significant impact on the user experience of the driver and passengers. About one-third of the vehicle complaints are related to NVH performance. As the core component of the vehicle, the drivetrain’s NVH characteristics have a significant impact on vehicle comfort. How to reliably and stably reproduce the specific condition of the whole vehicle through the test method, and obtain the highly consistent objective data for analyzing and improving the NVH characteristics of the drivetrain is of great significance in engineering. For this purpose, China Automotive Technology Research Center Co., Ltd. (CATARC) designed and built a new type drivetrain NVH test facility, which consists of five dynamometers, and can carry horizontal/vertical, front/rear drive or four-wheel drive structures including powertrain, transmission, and rear axle, or even a whole vehicle. Because of equipped with battery simulator, the above specimens of fuel vehicle, hybrid vehicle and electric vehicle can be mounted. The various functions of the facility enable a series of NVH tests such as gear whine, gear rattle, torsional vibration, and gear transmission errors, etc. Through the test data and simulation analysis, the solution to the NVH problem can be given from the root source. In this article, the structure of the facility and various test cases will be introduced in detail.