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Development of Third Generation of Gasoline P-ZEV Technology
Technical Paper
2003-01-0816
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
This paper describes the third generation of the partial zero emission vehicle (P-ZEV) technology originally adopted on the Nissan Sentra CA sold in California. The 2000 Nissan Sentra CA became the world's first gasoline-fueled car to qualify for P-ZEV credits from the California Air Resources Board (CARB). The third-generation P-ZEV system has been substantially reduced in size and cost, compared with the Sentra CA system, enabling it to be used on high-volume models. This system complies with the P-ZEV requirements, including those for zero evaporative emissions and Onboard Diagnostics II (OBD-II).
To achieve a more compact and lower-cost system, an ultra-thin-walled catalyst substrate, the world's first to attain a 1.8-mil wall thickness, has been adopted along with catalysts that display excellent low-temperature activity. As a result, low-temperature catalyst activity has been significantly improved. A new compact HC trap catalyst system has also been developed, which has high-efficiency HC trap catalysts arranged in two stages. Improvements were also made to the system to reduce engine-out HC and NOx emissions. These various improvements made it possible to develop a mass-produced engine system that meets the P-ZEV requirements.
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Citation
Oguma, H., Koga, M., Momoshima, S., Nishizawa, K. et al., "Development of Third Generation of Gasoline P-ZEV Technology," SAE Technical Paper 2003-01-0816, 2003, https://doi.org/10.4271/2003-01-0816.Also In
References
- Nishizawa Kimiyoshi Mitsuishi Shunichi Mori Kouichi Yamamoto Shinji “Development of Second Generation of Gasoline P-ZEV Technology” SAE Paper 1999-01-3629
- Nishizawa Kimiyoshi Momoshima Sukenori Koga Masaki Tsuchida Hirofumi “Development of New Technologies Targeting Zero Emissions for Gasoline Engines” SAE Paper 2001-01-1310
- Nishizawa Kimiyoshi Momoshima Sukenori Koga Masaki “Nissan's Gasoline SULEV Technology” SAE 2000-01-1583
- Yamamoto Shinji Matsushita Kenjirou Etoh Satomi Takaya Masahiro “In-line Hydrocarbon(HC) Adsorber System for Reducing Cold-Start Emission” SAE Paper 2000-01-0892
- Mitsuishi Shunichi Mori Kouichi Nishizawa Kimiyoshi Yamamoto Shinji “Emission Reduction Technologies for Turbocharged Engines” SAE Paper 1999-01-3629