This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
SI Engine Controls and Mean Value Engine Modelling
Annotation ability available
Sector:
Language:
English
Abstract
Many existing classical electronic control systems (speed-throttle, speed-density, MAF (mass air flow)) are based on quasistatic engine models and static measured engine maps. They are thus time consuming to adapt to new engine types, are sensitive to dynamic sensor errors and in general have undesirable dynamic characteristics. One of the main reasons for the characteristics of these strategies has been the lack of a precise, systems oriented, equation based, dynamic engine model. Recently a compact dynamic mean value engine model (MVEM) has been presented by the authors which displays good global accuracy. A mean value model is one which predicts the mean value of the gross internal and external engine variables. This paper shows how the engine model can be applied to the systematic design and analysis of classical electronic engine control systems.
One of the main aims of the paper is to eliminate the use of cut and try methods in designing dynamic engine controls. The goal is also to improve transient drivability and emissions performance. The main subjects treated are steady state and transient fueling strategies, lambda control and idle-speed control. There is also a comparison of conventional speed density and MAF control systems including the limitations imposed by signal conditioning filters and available sensors.
Recommended Content
| Technical Paper | The Analysis of Mean Value SI Engine Models |
| Technical Paper | Engine Dynamics: Time-Based Versus Crank-Angle Based |
| Ground Vehicle Standard | E/E Diagnostic Test Modes |
Authors
Citation
Hendricks, E. and Sorenson, S., "SI Engine Controls and Mean Value Engine Modelling," SAE Technical Paper 910258, 1991, https://doi.org/10.4271/910258.Also In
References
- Franklin, G. F. Powell, J. David Feedback Control of Dynamic Systems Addison - Wesley Pub. Co., Inc. Reading MA 1987 495
- Sullivan, J. A. “European Applications of Ford Control Fuel Injection Engine Control Systems” S A E Technical Paper 840546 1984
- Cassidy, J. F. Athens, M. Lee W. H. “On the Design of Electronic Automotive Engine Controls Using Linear Quadratic Control Theory” IEEE Trans, on Automatic Control AC - 25 5 1980
- Hendricks, E. Holst, J. Poulsen, N. Joensen, H. “Adaptive Minimum Energy Control of Large Diesel Engines” 2nd IFAC Workshop on Adaptive Systems in Control and Signal Processing Proceedings Lund Sweden 1986 Hendricks, E. Poulsen, N. “Minimum Energy Control of Large Diesel Engines” SAE Technical Paper 861191 1986
- Hubbard, M. Dobson, P. D. Powell, J. D. “Closed Loop Control Using a Cylinder Pressure Sensor” Journ. of Dyn. Syst. Meas, and Control Dec. 1976
- Patrick, R. S. Powell, J. D. “A Technique for the Real Time Estimation of Air-Fuel Ratio Using Molecular Weight Ratios” SAE Technical Paper 900260 1990
- Hendricks, E. Sorenson, S. C. “Mean Value Modelling of Spark Ignition Engines” SAE Technical Paper 900616 1990
- Jensen, J. P. Kristensen, A. F. Sorensen, S. C. Houbak, N. Hendricks, E. “Transient Simulation of a Small Turbocharged Diesel Engine” I Mech. E Seminar on Engine Transient Performance London, U.K. Nov. 1990
- Hendricks, E. “Mean Value Modelling of Large Turbocharged Two-Stroke Diesel Engines” SAE Technical Paper 890564 1989
- Blanke, M. Andersen, J. S. “On Modelling Large Two-Stroke Diesel Engines: New Results from Identification” IFAC 9th World Congress Proceedings Budapest, Hungary 1984
- Houbak, N. SIL - A Simulation Language Springer - Verlag Lecture Notes in Computer Science NY., NY. 1990
- Hendricks, E. Sorensen, S. C. Holmskov, J. “Compact Modelling of SI Engines” 1991
- Aquino, C. F. Fozo, S. R. “Steady State Transient A/F Control Requirements for Cold Operation of a 1.6 Liter Engine with Single Point Fuel Injection” SAE Technical Paper 850509 1985
- Fozo, S. R. Aquino, C. F. “Transient A/F Characteristics for Cold Operation of a 1.6 Liter Engine with Sequential Fuel Injection” SAE Technical Paper 880691 1988
- Aquino, C. F. “Transient A/F Control Characteristics of the 5 Liter Central Fuel Injection Engine” SAE Technical Paper 810494 1981
- Rasmussen, I. The Technical University of Denmark 1976
- Melgaard, H. Hendricks, E. Madsen, H. “Continuous Identification of a Four-Stroke SI Engine” Paper TP10, 5:30, 1990 American Control Conference San Diego, CA 1990
- Hendricks, E. “Mean Value Modelling and Lambda Control” 1991
- Matthews, R. D. Shizhi, M. “Combustion Efficiency of Spark Ignition Engines” Int. Hour, of Vehicle Design 8 3 1987
- Nishiyama, R. Ohkubo, S. Washino, S. “An Analysis of Factors Improving A/F Control Characteristics” SAE Technical Paper 890761 1989
- Lillelund, J. Hendricks, E. “A PC Engine Control Development System” SAE Technical Paper 1991
- Kokotovic, P. V. “Applications of Singular Perturbation Techniques to Control Problems” SIAM Review 26 4 Oct. 1984
- Vesterholm, T. Hendricks, E. “Practical SI Engine Observers” 1991
- Harrington, D. L. Bolt, J. A. “Analysis and Digital Simulation of Carburetor Metering” SAE Technical Paper, 700082 1970
- Sauer, R. “Hot-Film Air Mass Meter-A Low Cost Approach to Intake Air Measurement” SAE Technical Paper 880560 1988
- Washino, R. Nishiyama, R. Ohkubo, S. “A Fundamental Study of the Control of Periodic Oscillation of SI Engine Revolutions” SAE Technical Paper 860411 1986
- Powell, B. K. Cook, J. A. Grizzle, J. W. “Modelling and Analysis of an Inherently Multi-rate Sampling Fuel Injected Engine Idle Speed Control Loop” Paper No. FA2 10:00, 1987 American Control Conf. Minn. MA 1987
- Morris, B. K. Morris, R. L. “Modern Control Applications in Idle Speed Control” Paper No. WA4 11:45, 1983 American Control Conf. NY, NY 1983