This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Development of Advanced Three-Way Catalyst Technology
Technical Paper
2008-01-1645
ISSN: 0148-7191, e-ISSN: 2688-3627
Annotation ability available
Sector:
Language:
English
Abstract
Environmental problems have raised much attention recently. Automotive manufacturers are strongly required to suppress tailpipe emission world wide. To meet tight legislations such as PZEV and EU5 which are stringent regulation, it is well known that improving the quick light-off performance and hot-NOx conversion are critical issues with limited precious group metals (PGM) usage. Due to the strong pressure of recent PGM prices, further PGM reduction is strongly required for tight regulation applications. Moreover, there is a requirement of utilizing lower cell density substrates to decrease catalyst backpressure for the improvement of vehicle drivability. This paper will present a newly designed formulation that has excellent quick light-off and NOx reduction performance. In the developed catalyst, new thermally stable OSC material and porous washcoat technologies were adopted. Also, the washcoat loading of the catalyst was lowered against current formulations. The developed catalyst system exhibited superior performance to the previous generation system on bench and vehicle evaluation.
Recommended Content
Authors
Citation
Tanikawa, K., Hirota, T., Yamada, T., Komori, M. et al., "Development of Advanced Three-Way Catalyst Technology," SAE Technical Paper 2008-01-1645, 2008, https://doi.org/10.4271/2008-01-1645.Also In
References
- Matsuzono Y. Sakanushi M. Kitagawa H. “Development of low precious-metal automotive perovskite catalytic system” SAE Paper 2003-01-0814
- Kidokoro R. Hoshi K. Hiraku K. Satoya K. Watanabe T. Fujiwara T. Suzuki H. “Development of PZEV Ehaust Control System” SAE Paper 2003-01-0817
- Nishizawa K. Mitsuishi S. Mori K. Yamamoto S. “Development of Second Generation of Gasoline P-ZEV Technology” SAE Paper 2001-01-1310
- Watanabe K. Taga W. Hirota T. Tanikawa K. Nagashima K. Zhang G. Muraki H. “Advanced Emission Control System for ULEV2 Application” SAE Paper 2006-01-0848
- Ozawa M. Kimura M. Isogai M. J. Alloys and Comp. 193 1993 73