CATARC New Type Drivetrain NVH Test Facility 2019-01-0788
As the most intuitive performance of users, NVH performance is one of the comprehensive indicators to evaluate the manufacturing standard of the whole vehicle. About one-third of the vehicle complaint are related to NVH performance. As a core component of the vehicle, the NVH characteristics of the drivetrain 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, which is of great significance in engineering. For this purpose, China Automotive Technology Research Center Co., Ltd. (CATARC) designed and built a unparalleled drivetrain NVH test facility, which consists of five dynamometers. Test specimens such as powertrain, transmission, and rear axle can be mounted to the facility. The structure is not limited to the horizontal/vertical, front/rear drive/four-wheel drive structure, or even a whole vehicle. Due to the battery simulator, the above specimens of the fuel vehicle, hybrid vehicle and electric vehicle can be satisfied. 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 solve the NVH problem can be given from the root source. This article details the facility structure and various test cases.