An Analytical Method for Determining Engine Torque Harmonics for Use With Up Front CAE 951248
An analytical method for determining engine torque harmonics is presented. The approach employs an engine cycle simulation model to calculate instantaneous cylinder pressure for each operating condition based on engine characteristics that can be determined experimentally and/or analytically. Cylinder pressure is converted to instantaneous torque from which harmonics are determined using an FFT algorithm. A description of the cycle simulation model, including required data, is presented. The method is validated by presenting correlation results at a number of operating conditions (i.e. engine speeds and loads) comparing analytical versus test driveline torque harmonics. Finally, limitations in the method as well as possible extensions to the method are discussed.
Citation: Scott Bergeon, M. and Newman, C., "An Analytical Method for Determining Engine Torque Harmonics for Use With Up Front CAE," SAE Technical Paper 951248, 1995, https://doi.org/10.4271/951248. Download Citation
Author(s):
M. Scott Bergeon, C. E. Newman
Affiliated:
Ford Motor Co.
Pages: 6
Event:
SAE Noise and Vibration Conference and Exposition
ISSN:
0148-7191
e-ISSN:
2688-3627
Also in:
Proceedings of the 1995 Noise and Vibration Conference-P-291
Related Topics:
Engine cylinders
Mathematical models
CAD, CAM, and CAE
Pressure
SAE MOBILUS
Subscribers can view annotate, and download all of SAE's content.
Learn More »