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Development of New Technologies Targeting Zero Emissions for Gasoline Engines
Technical Paper
2000-01-0890
ISSN: 0148-7191, e-ISSN: 2688-3627
Annotation ability available
Sector:
Event:
SAE 2000 World Congress
Language:
English
Abstract
This paper describes new technologies for achieving exhaust emission levels much below the SULEV standards in California, which are the most stringent among the currently proposed regulations in the world. Catalyst light-off time, for example, has been significantly reduced through the adoption of a catalyst substrate with an ultra-thin wall thickness of 2 mil and a catalyst coating specifically designed for quicker light-off. A highly-efficient HC trap system has been realized by combining a two-stage HC trap design with an improved HC trap catalyst. The cold-start HC emission level has been greatly reduced by an electronically actuated swirl control valve with a high-speed starter. Further, an improved Air Fuel Ratio (AFR) control method has achieved much higher catalyst HC and NOx conversion efficiency.
Authors
Topic
Citation
Nishizawa, K., Momoshima, S., Koga, M., and Tsuchida, H., "Development of New Technologies Targeting Zero Emissions for Gasoline Engines," SAE Technical Paper 2000-01-0890, 2000, https://doi.org/10.4271/2000-01-0890.Also In
References
- Mitsuishi S. Mori K. Nishizawa K. Yamamoto S. “Emission Reduction Technologies for Turbocharged Engines” SAE Paper 1999-01-3629
- Hoke Jeffrey B. Heck Ronald M. Poles Terry C. “Premair Catalyst System-A New Approach to Cleaning the Air” SAE Paper 1999-01-3677