This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Engine Torque Control Variation Analysis
Technical Paper
2008-01-1016
ISSN: 0148-7191, e-ISSN: 2688-3627
Annotation ability available
Sector:
Language:
English
Abstract
The growing complexity of engine control systems and integration with transmission and vehicle dynamics controls systems have lead to the use of torque-based engine control. Torque-based control enables flexibility and expandability of the powertrain control system structure. It allows various engine actuation technologies (active fuel management (AFM), cam phasing, supercharger, etc.) to be easily incorporated, and to enable a simpler control structure than current production controls. Torque-based control structure is developed to coordinate and achieve better engine, transmission, hybrid, and vehicle dynamics controls.
This paper describes the role of Engine Torque Control in a torque-based control system. It gives an overview of Engine Torque Control architecture with main elements, and discusses control system requirements. Engine Torque Control performance, defined by the engine torque transient response, has direct impact on qualities of torque based control, such as vehicle response, drivability and fuel economy. The engine torque transient response must be independent of control system, plant, and environmental variations. An accurate plant model of a powertrain system has been developed, presented, and tuned with a development vehicle data. This model is used to study the influence of parameter variation on the control system. The Engine Torque Control algorithm model used for Rapid-Prototyping Controls is connected with the powertrain plant model through a control interface model.
This paper characterizes an Engine Torque Control transient response in terms of classical control theory metrics such as overshoot, steady state error, and response time. The influence of both environmental and system parameters on the control system transient response characteristics is considered. The parameter variation and simulation Design of Experiment (DOE) runs were chosen by control design team and torque control experts. The torque response data collected on development vehicle is used to verify integrity of the simulation results. This paper provides simulation results illustrating how transient torque response performance is a function of system variations.
Recommended Content
Authors
Citation
Livshiz, M., Kao, M., and Will, A., "Engine Torque Control Variation Analysis," SAE Technical Paper 2008-01-1016, 2008, https://doi.org/10.4271/2008-01-1016.Also In
References
- Streib H-M. Leonhard R. “Hierarchical Control Strategy for Powertrain Functions,” SAE Paper No. 925052 1992
- Keller Frieder and others “Electronic System for a Motor Vehicle,” 1994
- Gerhardt J. Hönninger H. Bischof H. “A New Approach to Functional and Software Structure for Engine Management Systems -BOSCH ME7,” SAE Paper No. 980801 1998
- Heintz N. and others “An Approach to Torque-Based Engine Management Systems,” SAE Paper No. 2001-01-0269 2001
- Mencher B. Jessen H. Kaiser L. Gerhardt J. “Preparing for CARTRONIC - Interface and New Strategies for Torque Coordination and Conversion in a Spark Ignition Engine-Management System,” SAE Paper No. 2001-01-0268 2001
- Sans M. “Generic Integrated PowerTrain Management IPM Interface as a Standard,” SAE Paper No. 2001-0101326 2001
- Livshiz M. Chynoweth S. “Engine Torque Control with Desired State Estimation” 2005
- Livshiz M. Chynoweth S. Kaiser J. Clutz R. Dibble D. Younessi B. “Coordinated Engine Torque Control” 2006
- Livshiz M. Chynoweth S. “Torque Control of Supercharged Engine” 2005
- Katsumata M. Kuroda Y. Ohata A. “Development of an Engine Torque Estimation Model: Integration of Physical and Statistical Combustion Model” SAE 2007-01-1302
- Amano N. “Method of Calculating Engine Torque” 2004
- Livshiz M. et al “Torque estimation for engine speed control” 1996
- Livshiz M. et al “Torque Estimator for Engine Speed and Torque control” 2004
- Drakunov S. Rizonni G. Wang Y.-Y “On Line Estimation of Indicated Torque in IC Engines using Nonlinear Observers” SAE 950840
- Azzoni P. at al “Engine and Load Torque Estimation with application to electronic throttle control” SAE 980795
- Livshiz M. et al “Torque Control of Turbocharged Engine” Sept. 2006
- Livshiz M. Kao M. Will A. B. “Validation and Calibration Process of Powertrain Model for Engine Torque Control Development,” SAE 2004-01-0902 2004
- Dobner D. J. “A Mathematical Model for Development of Dynamic Engine Control” SAE Paper No. 800054 1980
- Moskwa J. J. Hedrick J. K. “Modeling and Validation of Automotive Engines for Control Algorithm Development,” ASME Journal of Dynamic Systems, Measurement and Control 114 June 1992
- Kao M. Moskwa J. J. “Turbocharged Diesel Engine Modeling for Nonlinear Engine Control and State Estimation,” ASME Journal of Dynamic Systems, Measurement, and Control 117 March 1995
- Cho D. Hedrick J. K. “Automotive Powertrain Modeling for Control,” ASME Journal of Dynamic Systems, Measurement, and Control 111 December 1989
- Stefanopoulou A. G. Cook J. A. Grizzle J. W. Freudenberg J. S. “Control-Oriented Model of a Dual Equal Variable Cam Timing Spark Ignition Engine,” ASME Journal of Dynamic Systems, Measurement, and Control 120 June 1998
- Turin R. Mills J. Fowler S. Myers C. “Enabling Virtual Development for Practical Engine Control,” SAE- 2005-01-0320 2005
- Turin R. Chang M. Zhang R. Dagci O. H. “A Three-Pillar Framework for Model-Based Engine Control System Development,” SAE- 2007-01-1624 2007
- Zheng Q. Srinivasan K. Rizzoni G. “Dynamic Modeling and Characterization of Transmission Response for Controller Design,” SAE Paper No. 981094 1998
- Hebbale K. Kao C.-K. “Adaptive Control of Shifts in Automatic Transmissions,” Proceedings of the Symposium on Advanced Automotive Technologies 56 ASME International Mechanical Engineering Congress and Exposition San Francisco, California 1995
- Tugcu A. K. Hebbale K. V. Alexandridis A. A. Karmel M. “Modeling and Simulation of the Powertrain Dynamics of Vehicles Equipped with Automatic Transmissions,” Proceedings of ASME Symposium on Simulation of Ground Vehicles and Transportation Systems, ASME Winter Annual Meeting Anaheim, California Dec. 1986
- Hagiwara K. Terayama S. Takeda Y. Yoda K. Suzuki S. “The Development and Utilization of Hardware-in-the-Loop Simulation for the Development of an Automatic Transmission Control System,” SAE Paper No. 2002-01-1255 2002
- Heywood J. B. Internal Combustion Engine Fundamentals McGraw-Hill 1988
- Gillespie T. D. Fundamentals of Vehicle Dynamics SAE 1992
- Bogden D. M. Grimes M. R. Michaels L. H. Amann R. W. “Robust Electronic Control System Design Requires Signal Delivery Analysis,” 2004