This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Individual Cylinder Air-Fuel Ratio Feedback Control Using an Observer
Annotation ability available
Sector:
Language:
English
Abstract
In this research project, modeling of the dynamic air excess ratio (λ) behavior in the exhaust gas at the confluence point in the exhaust manifold was performed. By applying an observer which is one method described by modern control system theory, estimation of the λ for each cylinder was carried out using one λ sensor. The estimated value was used to perform λ feedback control for each cylinder, allowing compensation of deviation in air-fuel ratio between cylinders and individual control of fuel injection volume for each cylinder, dramatically enhancing λ controllability.
Recommended Content
Technical Paper | An Adaptive Air/Fuel Ratio Controller for SI Engine Throttle Transients |
Technical Paper | Development of New Ion Current Combustion Control System |
Technical Paper | Transient A/F Ratio Errors in Conventional SI Engine Controllers |
Authors
Citation
Hasegawa, Y., Akazaki, S., Komoriya, I., Maki, H. et al., "Individual Cylinder Air-Fuel Ratio Feedback Control Using an Observer," SAE Technical Paper 940376, 1994, https://doi.org/10.4271/940376.Also In
References
- Kogo H. Mita T. The System Control Theory Jikkyo December 1979
- Ichikawa K. The Newest Control Theory Gakkensha August 1983
- Anderson M. J. “A Feedback A/F Control System for Low Emission Vehicles” SAE 930388
- Chang C. Fekete N. P. Powell J. D. “Engine AirFuel Ratio Control Using an Event-Based Observer” SAE 930766
- Turin R. C. Geering H. P. “On-Line Identification of Air-Fuel Ratio Dynamics in a Sequentially Injected SI Engine” SAE 930857
- Kaidantzis P. Rasmussen P. Jensen M. Vesterholm T. Hendricks E. “Robust, Self-Calibrating Lambda Feedback for SI Engines” SAE 930860