FTP and US06 Performance of Advanced High Cell Density Metallic Substrates as a Function of Varying Air/Fuel Modulation

Mueller-Haas, Klaus; Brueck, Rolf; Rieck, J. S.; Webb, Cynthia C.; Shaw, Keith A.

doi:10.4271/2003-01-0819

Cited by 5 publications

(3 citation statements)

References 6 publications

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“…By preprocessing the foil material different types of channel structures are possible which directly influence the channel flow. The potential available substrate designs were earlier discussed and presented in [3,4] TRANSVERSAL STRUCTURE TS The Transversal Structure (TS) is shown schematically in Figure 5. The structure is applied to the sinusoidal corrugated foil as a secondary corrugation 90 degree to the flow direction.…”

Section: The Traditional Catalyst Constructionmentioning

confidence: 99%

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Innovative Metallic Substrates for Exhaust Emission Challenges for Gasoline and Diesel Engines

Müller-Haas¹,

Rice²

2005

SAE Technical Paper Series

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Increasingly stricter emission standards for gasoline and diesel engines accelerated the exhaust aftertreatment industry to develop high efficiency catalysts with innovative substrates. Engineers face thermodynamic and thermal management challenges to achieve system emission, noise and back pressure targets at minimum costs. This paper describes advanced substrate technology for exhaust after treatment systems for gasoline and diesel engines. The first part focuses on substrate technology solutions including high cell density substrates and advanced metallic substrates with structured and perforated foil material. This new substrate technology offers great potential to optimize the overall system efficiency through exhaust mixing within the catalyst at minimum back pressure. Transient temperature condition and available packaging space will have remarkable impact on system design and catalyst performance for future advanced combustion engines and hybrid vehicles.

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Section: The Traditional Catalyst Constructionmentioning

confidence: 99%

“…Calculated Conversion as a function of channel lengthAlso decreasing the channel size by increasing the substrate cell density increase the mass transfer coefficient. The industry takes advantage of higher cell density substrate technology to build more cost effective fast light-off converter systems[1,2,3].…”

mentioning

confidence: 99%

Innovative Metallic Substrates for Exhaust Emission Challenges for Gasoline and Diesel Engines

Müller-Haas¹,

Rice²

2005

SAE Technical Paper Series

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“…This leads to part B) of the study. Previous publications demonstrated the light-off advantage of smaller diameter and higher cell density substrate technology [5,6,7,8]. The cascaded converter system or the conical converter system incorporates the advantage of fast heat up and therefore quick light-off though reduced cross section and minimized back pressure [2,3,4].…”

Section: Increase Ignition Energymentioning

confidence: 99%

Development of an Engine Management Strategy and a Cost Effective Catalyst System to Meet SULEV Emission Requirements Demonstrated on a V-6 Engine

Oertel

Wildner

Mueller-Haas

et al. 2004

SAE Technical Paper Series

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The study presented in this paper focuses on measures to minimize exhaust gas emissions to meet SULEV targets on a V6 engine by using a cost efficient system configuration. The study consists of three parts. A) In the first stage, the influence of engine management both on raw emissions and catalyst light off performance was optimized. B) Afterwards, the predefined high cell density catalyst system was tested on an engine test bench. In this stage, thermal data and engine out emissions were used for modeling and prediction of light-off performance for further optimized catalyst concepts. C) In the final stage of the program, the emission performance of the test matrix, including high cell density as well as multifunctional single substrate systems, are studied during the FTP cycle. The presented results show the approach to achieve SULEV emission compliance with innovative engine control strategies in combination with a cost effective metallic catalyst design.

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ChemInform Abstract: Metal and Coated‐Metal Catalysts

Twigg

Webster

1998

ChemInform

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FTP and US06 Performance of Advanced High Cell Density Metallic Substrates as a Function of Varying Air/Fuel Modulation

Cited by 5 publications

References 6 publications

Innovative Metallic Substrates for Exhaust Emission Challenges for Gasoline and Diesel Engines

Innovative Metallic Substrates for Exhaust Emission Challenges for Gasoline and Diesel Engines

Development of an Engine Management Strategy and a Cost Effective Catalyst System to Meet SULEV Emission Requirements Demonstrated on a V-6 Engine

ChemInform Abstract: Metal and Coated‐Metal Catalysts

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