Different Strategies for Transient Control of the Air-Fuel Ratio in a SI Engine 2000-01-2835
This paper compares several strategies for air-fuel ratio transient control. The strategies are: A factory standard look-up table based system (a SAAB Trionic 5), a feedback PI controller with and without feed-forward throttle correction, a linear feed-forward control algorithm, and two nonlinear feed-forward algorithms based on artificial neural networks. The control strategies have been implemented and evaluated in a SAAB 9000 car during a transient driving test, consisting of an acceleration in the second gear from an engine speed of 1500 rpm to 3000 rpm. The best strategies are found to be the neural network based ones, followed by the table based factory system. The two feedback PI controllers offer the poorest performance.
Citation: Blomqvist, D., Byttner, S., Holmberg, U., and Rögnvaldsson, T., "Different Strategies for Transient Control of the Air-Fuel Ratio in a SI Engine," SAE Technical Paper 2000-01-2835, 2000, https://doi.org/10.4271/2000-01-2835. Download Citation
Author(s):
Daniel Blomqvist, Stefan Byttner, Ulf Holmberg, Thorsteinn Rögnvaldsson
Affiliated:
Intelligent Systems Laboratory, IDE,Halmstad Univ.
Pages: 9
Event:
International Fuels & Lubricants Meeting & Exposition
ISSN:
0148-7191
e-ISSN:
2688-3627
Also in:
Electronic Engine Control Technologies-PT-73, Combustion and Emissions Formation in SI and Diesel Engines-SP-1562, SAE 2000 Transactions Journal of Fuels and Lubricants-V109-4
Related Topics:
Air / fuel ratio
Neural networks
Mathematical models
Throttles
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