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Steady-State Wide-Range Air-Fuel Ratio Control
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English
Abstract
An experimental system for closed-loop control of air-fuel ratio in a fuel-injected engine using a universal exhaust gas oxygen (UEGO) sensor is described. A model incorporating feed forward and feedback control is characterized for steady- state and feed-forward errors, and response to slowly varying engine load disturbances. The system is implemented on a port fuel injected 4.6L V8 engine with commercially available components, including a universal microcomputer based engine controller and a UEGO sensor and signal conditioning package. The performance of the experimental system is compared with the simulation results and practical limitations of the modeled control system.
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Authors
Citation
Milot, D., "Steady-State Wide-Range Air-Fuel Ratio Control," SAE Technical Paper 922172, 1992, https://doi.org/10.4271/922172.Also In
References
- Ribbens, W.B. Understanding Automotive Electronics Fourth Indiana Sams 1992
- Chen, C.T. System and Signal Analysis New York Saunders 1989
- Dorf, R.C. Modern Control Systems Sixth Mass. Addison-Wesley 1992
- Grizzle, J.W. Dobbins, K.L. Cook, J.A. “Individual Cylinder Air-Fuel Ratio Control with a Single EGO Sensor.” IEEE Trans. Veh. Tech. 40 280 286 1991
- Control System Technology, Inc. “System Analysis for an Electronic Fuel Control” TRW Transportation Electronics Division 1984