Technology for Reducing Exhaust Gas Emissions in Zero Level Emission Vehicles(ZLEV)

ZLEV was accomplished by applying the Three-Stage Emission Management System, utilizing ultra-precise combustion and exhaust gas conversion control technology, and dividing the operation into three-stages of just after engine start, the warm-up stage, and normal running. These individual component technologies include improving engine combustion (high swirl combustion by variable valve timing and lift) and performing fuel control optimization during engine startup to reduce unburned HC emission, quick catalyst activation (engine control and catalyst improvements), HC adsorption of a hybrid catalyst (catalyst improvement and desorption conversion control), and high precision air-fuel ratio feed back control (catalyst condition predictive control, and others).

• Record URL:
  • https://doi.org/10.4271/1999-01-0772
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/01487191
• Supplemental Notes:
  • Abstract reprinted with permission of SAE International.
• Authors:
  • Kishi, Noriyuki
  • Kikuchi, Shinichi
  • Suzuki, Norio
  • Hayashi, Tadayoshi
• Conference:
  • International Congress & Exposition
  • Location: Detroit Michigan, United States
  • Date: 1998-2-23 to 1998-2-26
• Publication Date: 1998-1-23

Language

• English

Media Info

• Media Type: Web
• Serial:
  • SAE Technical Paper
  • Publisher: Society of Automotive Engineers (SAE)
  • ISSN: 0148-7191
  • EISSN: 2688-3627
  • Serial URL: http://papers.sae.org/

Subject/Index Terms

• TRT Terms: Catalysts; Combustion; Fuel conservation; Valve timing
• Subject Areas: Highways; Vehicles and Equipment;

Filing Info

• Accession Number: 01794255
• Record Type: Publication
• Source Agency: SAE International
• Report/Paper Numbers: 1999-01-0772
• Files: TRIS, SAE
• Created Date: Dec 9 2021 10:17AM