Inhibition of post-combustion catalysts by alkynes: A clue for understanding their behaviour under real exhaust conditions

Mabilon, G.; Durand, D.; Courty, P.

doi:10.1016/s0167-2991(06)81474-6

Cited by 24 publications

(20 citation statements)

References 7 publications

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“…Acetylene and ethylene are representatives of slow and fast oxidizing hydrocarbons, respectively. Acetylene is very important at low temperatures because it is known to increase the light-off temperatures of other components by surface inhibition [12,13].…”

Section: First Principle Converter Modelmentioning

confidence: 99%

“…the output lambda would equal the reference lambda signal. Since the wall wetting dynamics is invertible, see (12), the internal model controller is a logical choice. Therefore the inverse of the wall wetting model, coupled with a low pass filter for the improvement of system robustness, is implemented as the engine controller.…”

Section: Engine Modeling and Control -A Mean Valuementioning

confidence: 99%

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On a Model-Based Control of a Three-Way Catalytic Converter

Balenovic¹,

Backx²,

Hoebink³

2001

SAE Technical Paper Series

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Though very important for the system performance, the dynamic behavior of the catalytic converter has mainly been neglected in the design of exhaust emission control systems. Since the major dynamic effects stem from the oxygen storage capabilities of the catalytic converter, a novel model-based control scheme, with the explicit control of the converter's oxygen storage level is proposed. The controlled variable cannot be measured, so it has to be predicted by an on-line running model (inferential sensor). The model accuracy and adaptability are therefore crucial. A simple algorithm for the model parameter identification is developed. All tests are performed on a previously developed first principle model of the catalytic converter so that the controller effectiveness and performance can clearly be observed.

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Section: First Principle Converter Modelmentioning

confidence: 99%

Section: Engine Modeling and Control -A Mean Valuementioning

confidence: 99%

On a Model-Based Control of a Three-Way Catalytic Converter

Balenovic¹,

Backx²,

Hoebink³

2001

SAE Technical Paper Series

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“…In the current work ethene and ethyne were taken as hydrocarbons. The former concerns 25 mol% of the hydrocarbons [20], while the latter accounts for 20 mol% and moreover has been shown to inhibit the oxidation of both CO and other hydrocarbons notably at low temperatures [21], as often met in a cold engine start. The elementary steps of the kinetic model are as follows:…”

Section: Model Descriptionmentioning

confidence: 99%

Modeling of an Automotive Exhaust Gas Converter at Low Temperatures Aiming at Control Application

Balenovic¹,

Hoebink²,

Backx³

et al. 1999

SAE Technical Paper Series

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“…The light-off temperature is related to the strength of adsorption of the hydrocarbon: the hydrocarbon should adsorb strongly enough on the catalyst surface to allow its oxidation by oxygen adatoms. But a too strong adsorption is detrimental to the combustion since the hydrocarbon is more difficult to oxidize and the oxygen adsorption is inhibited [8]. Thus, most commonly tested hydrocarbons for the NO reduction have been light alkanes and olefins.…”

Section: Introductionmentioning

confidence: 99%

“…n-Butane was chosen since alkanes constitute one of the numerous classes of components present in exhaust gases [8,19] and because its light-off temperature seemed suitable for the reaction. The reaction was investigated on a platinum sponge catalyst.…”

Section: Introductionmentioning

confidence: 99%