Model-Based Control and Cylinder-Event-Based Logic for an Ultra-Low Emissions Vehicle

Leone, Douglas M.; Dodge, Lee G.; Shouse, K.; Grogan, Joe; Weeks, R. W.

doi:10.4271/970531

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Fuel Flow1

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Cited by 5 publications

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“…A portion of the fuel deposited on the intake manifold wall will later enter the air stream and affect the in-cylinder air-fuel ratio. A model of these dynamics is adapted from those used by Aquino [9], Leone et al [10], and Hendricks and Sorenson [11] '…”

Section: Fuel Flowmentioning

confidence: 99%

Adaptive sliding mode control of air–fuel ratio in internal combustion engines

Souder

Hedrick

2004

Intl J Robust & Nonlinear

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SUMMARYA simplified model of an internal combustion engine is used to derive a sliding mode control law. Adaptive update laws are derived for two fueling parameters that describe fuel flow into the cylinders, and a third parameter that describes air flow into the cylinders. The update laws allow the sliding mode control gain, which is usually increased to overcome model uncertainty, to be reduced. This improves the tracking performance of the sliding mode controller in the presence of the feedback time delays. The parameter update laws are modified to bound the parameter values and allow all three parameter update laws to run simultaneously. The effect of the sampling rate on the adaptive sliding mode controller performance and air-fuel ratio biasing via gain selection are also addressed.

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Section: Fuel Flowmentioning

confidence: 99%