Fuel-injection control of SI engines

It is known that about 50% of air pollutants comes from automotive engine exhaust, and mostly in a transient state operation. However, the wide operating range, the inherent nonlinearities of the induction process and the large modeling uncertainties make the design of the fuel-injection controller...

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Bibliographic Details
Main Authors: Sei-Bum Choi, Mooncheol Won, Hedrick, J.K.
Format: Conference Proceeding
Language:English
Subjects:
Adaptive control
Air pollution
Automotive engineering
Computational modeling
Control nonlinearities
Engines
Pollution measurement
Robustness
Sliding mode control
Vehicle dynamics
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Summary:It is known that about 50% of air pollutants comes from automotive engine exhaust, and mostly in a transient state operation. However, the wide operating range, the inherent nonlinearities of the induction process and the large modeling uncertainties make the design of the fuel-injection controller very difficult. Also, the unavoidable large time-delay between control action and measurement causes the problem of chattering. In this paper, an observer-based control algorithm based on sliding mode control technique is suggested for fast response and small amplitude chattering of the air-to-fuel ratio. A direct adaptive control using Gaussian networks is applied to the compensation of transient fueling dynamics. The proposed controller is simple enough for on-line computation and is implemented on an automotive engine using a PC-386. The simulation and the experimental results show that this algorithm reduces the chattering magnitude considerably and is robust to modeling errors.< >
DOI:10.1109/CDC.1994.411212