This content is not included in your SAE MOBILUS subscription, or you are not logged in.
In-Depth PHEV Driveline Torsional Vibration Induced Vehicle NVH Response Study by Integrated CAE/Testing Methodology
ISSN: 0148-7191, e-ISSN: 2688-3627
Published September 30, 2020 by SAE International in United States
Annotation ability available
Event: 11th International Styrian Noise, Vibration & Harshness Congress: The European Automotive Noise Conference
In this paper, a 1-D refined driveline model in AMESIM was built up, for a P2.5 topology PHEV. The model includes detailed engine, damper, dual clutch transmission, differential, motor, half-shaft, wheel, body, suspension, powertrain mounting and powertrain rigid body, The objective of the simulation is to predict torsional vibration induced vehicle NVH response under different driving scenarios. Firstly, the torsional vibration modes were predicted, and the critical modes were identified. This enabled a good understanding of modal alignment, identification of countermeasures and provide feedback to other engineering teams in the early stages of vehicle development. Secondly, the holistic operational testing, which included a plenty of measurement points at various locations, partly intended for later model calibration, partly for extracting mandatory excitation input, and partly for the reference of next optimization stage, was implemented on vehicle chassis dyno in a hemi-anechoic chamber. As it was merely centered on torsional vibration induced scenarios, the intake system / exhaust system/engine radiation noise contribution was excluded by specific measures during the testing. Thirdly, the NTF/VTF from the mount / suspension attachment points to vehicle response points were measured on the trimmed body using hammer impact testing, to create structural TPA model, that way, each transfer path contribution to the response point could be predicted and overall response could be synthesized from all paths. Fourthly, the above-mentioned driveline model, combining the excitation on each cylinder due to gas pressure, inertial forces and motor average torque, was well calibrated to predict the critical rpm fluctuation / vibration / cabin noise and vibration. Finally, it was validated that CAE results correlated very well to measurement data for defined loadcase. This approach can be adapted to PHEV driveline/vehicle NVH development from the early stages of vehicle development as well as NVH tuning / refinement stage to expedite HEV/PHEV NVH developing process. This paper was a part of the whole study, including analyses of all loadcases corresponding to various driving scenarios followed by driveline design / calibration parameter sensitivity study to improve the torsional vibration induced vehicle NVH response.
- Anil Poduturu - Roush International LLC
- Swejal Jain - Roush International LLC
- Steven Carter - Roush International LLC
- Qian Zhao - BAIC Motor Corporation, Ltd.
- Li Zhang - BAIC Motor Corporation, Ltd.
- Jianning Jia - BAIC Motor Corporation, Ltd.
- Lie Wu - BAIC Motor Corporation, Ltd.
- Huimin Zhuang - BAIC Motor Corporation, Ltd.
- Hongzhi Yu - BAIC Motor Corporation, Ltd.
- Shouwei Lu - BAIC Motor Corporation, Ltd.
- Honghui Zhao - BAIC Motor Corporation, Ltd.
CitationZhao, Q., Zhang, L., Jia, J., Wu, L. et al., "In-Depth PHEV Driveline Torsional Vibration Induced Vehicle NVH Response Study by Integrated CAE/Testing Methodology," SAE Technical Paper 2020-01-1507, 2020, https://doi.org/10.4271/2020-01-1507.
- Johnson , T. , and Joshi , A. Review of Vehicle Engine Efficiency and Emissions SAE Technical Paper 2018-01-0329 2018 https://doi.org/10.4271/2018-01-0329
- Gilbert , D. , O’Leary , M. , and Rayce , J. Integrating Test and Analytical Methods for the Quantification and Identification of Manual Transmission Driveline Clunk SAE Technical Paper 2001-01-1502 2001 https://doi.org/10.4271/2001-01-1502
- Capitani , R. , and Delogu , M. Analysis of the Influence of a Vehicle’s Driveline Dynamic Behavior Regarding the Performance Perception at Low Frequencies SAE Technical Paper 2001-01-3333 2001 https://doi.org/10.4271/2001-01-3333
- Alexander , T. , Liu , C. , and Monkaba , V. Multi-Body Dynamic Modeling Methods and Applications for Driveline Systems SAE Technical Paper 2002-01-1195 2002 htttps://doi.org/10.4271/2002-01-1195
- Isaac Du , H.Y. , and Frederiksen , M. Vibration Modeling and Correlation of Driveline Boom for TFWD/AWD Crossover Vehicles SAE Technical Paper 2003-01-1495 2003 https://doi.org/10.4271/2003-01-1495
- Hage , A. , and Szatkowski , A. Improving Low Frequency Torsional Vibrations NVH Performance through Analysis and Test SAE Technical Paper 2007-01-2242 2007 https://doi.org/10.4271/2007-01-2242
- Robinette , D. , Grimmer , M. , Horgan , J. , Kennell , J. et al. Torque Converter Clutch Optimization: Improving Fuel Economy and Reducing Noise and Vibration SAE Technical Paper 2011-01-0146 2011 https://doi.org/10.4271/2011-01-0146
- Li , Z. , and Sandhu , J. Transmission Torque Converter Arc Spring Damper Dynamic Characteristics for Driveline Torsional Vibration Evaluation SAE Technical Paper 2013-01-1483 2013 https://doi.org/10.4271/2013-01-1483
- Govindswamy , K. , and Wellmann , T. Aspects of NVH Integration in Hybrid Vehicles SAE Technical Paper 2009-01-2085 2009 https://doi.org/10.4271/2009-01-2085
- Sugimura , H. , Takeda , M. , Takei , M. , Yamaoka , H. et al. Development of HEV Engine Start-Shock Prediction Technique Combining Motor Generator System Control and Multi-Body Dynamics (MBD) Models SAE Technical Paper 2013-01-2007 2013 https://doi.org/10.4271/2013-01-2007
- Parmar , V. , Di Rocco , D. , Sopouch , M. , and Albertini , P. Multi-Physics Simulation Model for Noise and Vibration Effects in Hybrid Vehicle Powertrain SAE Technical Paper 2014-01-2093 2014 https://doi.org/10.4271/2014-01-2093
- Kokaji , J. , Komada , M. , Takei , M. , and Takeda , M. Mechanism of Low Frequency Idling Vibration in Rear-Wheel Drive Hybrid Vehicle Equipped with THS II SAE Technical Paper 2015-01-2255 2015 https://doi.org/10.4271/2015-01-2255
- Ogata , K. , Shimojo , K. , Watanabe , S. , and Kusunoki , S. An Investigation of a Reduction Method of the Body Vibration at a Situation of Engine Start-Stop SAE Technical Paper 2019-01-0785 2019 https://doi.org/10.4271/2019-01-0785
- Zhao , Q.
- Pang , J. , Sheng , G. , and He , H. Automotive Noise and Vibration Beijing Institute of Technology Press 2006