Development of Extruded Electrically Heated Catalyst System for ULEV Standards

Shimasaki, Yuichi; Kato, Hiroaki; Abe, F.; Hashimoto, S.; Kaneko, Takahisa

doi:10.4271/971031

Cited by 15 publications

(3 citation statements)

References 22 publications

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“…These techniques are referred to as fast light-off techniques. Among the more successful methods that have been developed for shortening the light-off time are locating of the converter closer to the exhaust manifold, secondary air injection, electrically and burner heated catalysts [1,4,7,[10][11][12][13][14][15][16].…”

Section: Introductionmentioning

confidence: 99%

Artificial neural network based modeling of heated catalytic converter performance

Akçayol

Çınar

2005

Applied Thermal Engineering

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Section: Introductionmentioning

confidence: 99%

Artificial neural network based modeling of heated catalytic converter performance

Akçayol

Çınar

2005

Applied Thermal Engineering

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“…The electrically heated catalyst (EHC) method is also an attractive method for reducing cold-start emissions and has been studied extensively, − although several disadvantages concerning the space and weight in a car, the durability, and the security of the complicated system have been noted . One of the present authors (A.U.)…”

Section: Introductionmentioning

confidence: 99%

“…Ballinger and Anderson are of the opinion that an air pump can be used with the exhaust systems to provide enough oxygen to oxidize the catalysts. 8 The electrically heated catalyst (EHC) method is also an attractive method for reducing cold-start emissions and has been studied extensively, [9][10][11][12] although several disadvantages concerning the space and weight in a car, the durability, and the security of the complicated system have been noted. 5 One of the present authors (A.U.)…”

Section: Introductionmentioning

confidence: 99%

Preparation of Fe−Cr Wires with Dispersed Co₃O₄ as an Electrically Heated Catalyst for Cold-Start Emissions

Konagai

Takeshita

Azuma

et al. 2006

Ind. Eng. Chem. Res.

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Spiral Fe-Cr wires (500 mm long, 0.2 mm diameter) coated with Co 3 O 4 powder were inserted into cells of a ceramic honeycomb settled in a quartz tube to abate the hydrocarbons in cold-start exhaust. The ends of the wires were tied into a bundle, which was bound to a copper electrode that was incorporated in the wall of a quartz tube. Co 3 O 4 powder catalyst that had been dispersed on the wires was heated to 673 K within 20 s when a potential of 8 V was loaded at the ends of the wires. More than 70% of the hydrocarbons in the feed were burned and converted to CO 2 and H 2 O with a loading of 8 V onto the wires for 1 min, when fuel-lean gases that were composed of 3000 ppm of propane and 5% O 2 were introduced into the honeycomb with a space velocity of 4000 h -1 . However, the hydrocarbon conversion was decreased to 40% when fuel-rich gases composed of 3000 ppm of propane and 0.5% O 2 were introduced. This is due to a shortage of O 2 in the feed, because 1.5% O 2 will be needed for the complete combustion of 3000 ppm of propane. In this paper, the preparation and set-up procedure of the electrically heated wire catalysts will be drawn, as well as the evaluation of activity and durability for iterative hydrocarbon combustion under various conditions. Finally, the application of the wire catalysts to actual automobile exhausts will be briefly mentioned.

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Automotive Catalyst

2009

Catalytic Air Pollution Control

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Development of Extruded Electrically Heated Catalyst System for ULEV Standards

Cited by 15 publications

References 22 publications

Artificial neural network based modeling of heated catalytic converter performance

Artificial neural network based modeling of heated catalytic converter performance

Preparation of Fe−Cr Wires with Dispersed Co₃O₄ as an Electrically Heated Catalyst for Cold-Start Emissions

Automotive Catalyst

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Development of Extruded Electrically Heated Catalyst System for ULEV Standards

Cited by 15 publications

References 22 publications

Artificial neural network based modeling of heated catalytic converter performance

Artificial neural network based modeling of heated catalytic converter performance

Preparation of Fe−Cr Wires with Dispersed Co3O4 as an Electrically Heated Catalyst for Cold-Start Emissions

Automotive Catalyst

Contact Info

Product

Resources

About

Preparation of Fe−Cr Wires with Dispersed Co₃O₄ as an Electrically Heated Catalyst for Cold-Start Emissions