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Powertrain calibration method to improve drivetrain oscillation after tip-in maneuvers with mechanical throttle body systems
Technical Paper
2008-36-0128
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
When a vehicle is subjected to a transient torque event by its engine, the powertrain usually responds in an oscillatory manner. This is a characteristic of the system, due to the lashes and the stiffness. This oscillatory behavior disturbs the driver/passengers when showing high amplitude and/or a determined frequency. The powertrain calibration must act to attenuate oscillations in order to avoid driveability issues. One approach is to modulate the spark advance to absorb the oscillatory response. This paper proposes a method to calibrate this 3rd order high pass filter algorithm, making it less time consuming than a pure empirical and trial and error manner. Benefits of 80% reduction of time consumption were obtained by applying the proposed methodology. Besides that, for the same time invested, better results were achieved with the system presenting more robust responses over the vehicle operating ranges.
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Citation
Possamai, L., de Queirós, A., and Pedreira, C., "Powertrain calibration method to improve drivetrain oscillation after tip-in maneuvers with mechanical throttle body systems," SAE Technical Paper 2008-36-0128, 2008, https://doi.org/10.4271/2008-36-0128.Also In
References
- Kuang, M. L. Hrovat, D. “Feedback Control System for Suppressing Driveline Oscillations in Electric Vehicles” FRL Technical Reports November 25 1998
- Amman, S. Keyvanmanesh, A. Do, K. Gummadi, S. Bolhouse, M. “Tip-in clunk metric investigation” FRA Technical Reports January 3 2007
- Schöggl, P. Koegeler, H. M. Gschweitl, K. Kokal, H. Williams, P. Hulak, K. “Automated EMS Calibration using Objective Driveability Assessment and Computer Aided Optimization Methods” SAE Technical Paper Series, 2002-01-0849 2002
- Schöggl, P. List, H. O. “Objective Evaluation of Vehicle Driveability” SAE Technical Paper Series, 980204 1998