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Development of Second Generation of Gasoline P-ZEV Technolgy
ISSN: 0148-7191, e-ISSN: 2688-3627
Published March 05, 2001 by SAE International in United States
Annotation ability available
Event: SAE 2001 World Congress
This paper describes the second generation of the partial zero emission vehicle (P-ZEV) technology that was developed for use on the Nissan Sentra CA sedan sold in California.1,2 The second-generation engine has been adopted on a mass-produced model marketed in Japan. Besides continuing the super ultra low emission vehicle (SULEV) performance of the Sentra CA, the second-generation technology incorporates a compact, two-stage HC trap catalyst system. The system has been substantially reduced in size and cost as a result of improving the catalyst and the substrate and reducing the total catalyst volume by optimizing the control method.
Moreover, the second-generation P-ZEV technology includes an electrically actuated continuously variable swirl control valve of the high-speed jet type, a high-response electrically actuated EGR valve and catalyst model control based on the use of an air-fuel ratio sensor. Besides contributing to low emission levels, these components are also used to achieve the maximum fuel economy improvement through innovative control of the engine operating conditions. As a result, the improved engine greatly reduces both fuel consumption and CO2 emissions to comply with Japan fuel economy standards to be enforced in 2010. These various improvements have resulted in the development of a production engine that combines outstanding emission performance with superior fuel economy to meet the environmental requirements of the 21st century.
CitationNishizawa, K., Mitsuishi, S., Mori, K., and Yamamoto, S., "Development of Second Generation of Gasoline P-ZEV Technolgy," SAE Technical Paper 2001-01-1310, 2001, https://doi.org/10.4271/2001-01-1310.
- Nishizawa Kimiyoshi Momoshima Sukenori Koga Masaki Tsuchida Hirofumi “Development of New Technologies Targeting Zero Emissions for Gasoline Engines” SAE Paper 2000-01-0890
- 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