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Experiences with Metallic Turbulent Substrates on 2.6/ Diesel Vehicle for Meeting Present and Future Emission Norms
Technical Paper
2007-26-018
ISSN: 0148-7191, e-ISSN: 2688-3627
Annotation ability available
Sector:
Event:
SIAT 2007
Language:
English
Abstract
Over the past several years, monolithic catalytic converters with laminar flow profile are being used by automotive industry. These catalytic converters, though create some turbulence at the inlet, make the majority of the rest of the flow laminar, thereby reducing the mass transfer of the exhaust components to the effective catalytic sites. Improvements were achieved only through the higher cell densities so far.
If the design change in the substrates allows the change of exhaust flow from laminar to turbulent, longer residence time can be achieved and more unconverted gases from the core of the channel come closer to the catalyst surfaces facilitating more reaction with the active catalytic sites.
The turbulent technology has been successfully developed more recently with metal substrates to get the required turbulent flow characteristics in the substrate channels. The advantages of this technology include better conversion efficiencies, lesser volume of the catalysts and hence less packaging space requirements, lower system costs etc.
The present paper deals with the work done on a 2.6 l Common Rail Diesel Vehicle application with close coupled metal substrates. Various turbulent substrate configurations like Transverse Structure (TS) Longitudinal Structure (LS) and Perforated Structure (PE) foils were tested on this application and the results are discussed. The technical and commercial benefits of the turbulent technology catalysts are also presented.
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Authors
- K. V. R. Babu - Emitec Emission Control Technologies India Pvt. Ltd.
- Shivraj Waje - Emitec Emission Control Technologies India Pvt. Ltd.
- Alfred Reck - Emitec Emission Control Technologies India Pvt. Ltd.
- Ravindra Mahajan - Mahindra & Mahindra Ltd., India
- Nilesh Gajarlawar - Mahindra & Mahindra Ltd., India
- Sudipto Basu - Umicore Marketing Services, India
Citation
Babu, K., Waje, S., Reck, A., Mahajan, R. et al., "Experiences with Metallic Turbulent Substrates on 2.6/ Diesel Vehicle for Meeting Present and Future Emission Norms," SAE Technical Paper 2007-26-018, 2007, https://doi.org/10.4271/2007-26-018.Also In
References
- Bruck Rolf Maus Wolfgang “The Future of Heterogeneous Catalysis in Automotive Applications: Turbulent Catalysts for Spark and Compression Ignition Engines” 26 th International Vienna Symposium 2005
- Bruck Rolf et al. “Flow Improved Efficiency by New Cell Structures in Metallic Substrates” SAE 950788
- Reck Alfred et al. “Metallic Substrates for Catalytic Converters in 2 & 3 Wheelers - Turbulent Catalysts meet the Requirements of the Future” SAE Vietnam ICAT 2005 - VASE 00096
- Bollig, M. et al “Next Generation Catalysts are Turbulent: Development of Support and Coating” SAE Paper No. 2004-01-1488
- Lotti Carrado et al. “Back Pressure Optimised Metal Supported Close Coupled PE Catalyst - First Application on a Maserati Powertrain” SAE Paper No. 2005-01-1105