The Influence of the Valve Stem Seal Oil Metering Rate on Exhaust Emissions

A valve stem seal is designed to reduce oil flow from the valve train area of the cylinder head into the intake and exhaust port of the engine. However, these seals have to allow adequate lubrication of the valve stem / valve guide contact area and therefore need to provide a minimal amount of oil flow. Even such small quantities of oil passing the seals into the ports and the combustion chamber will effect engine emissions. Exhaust emission measurements on a modern 16 valve gasoline engine illustrate the seals contribution on total engine emissions and allow prediction of the effect of adjustments of the oil metering rate to actual engine requirements.

• Record URL:
  • https://doi.org/10.4271/2000-01-0683
• 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:
  • Netzer, Juergen
  • Piasecki, Thaddaeus
  • Deussen, Norbert
• Conference:
  • SAE 2000 World Congress
  • Location: Detroit Michigan, United States
  • Date: 2000-3-6 to 2000-3-9
• Publication Date: 2000-3-5

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: Combustion chambers; Emissions testing; Engine cylinders; Engine valves; Exhaust gases; Securing and joining equipment
• Subject Areas: Highways; Vehicles and Equipment;

Filing Info

• Accession Number: 01795462
• Record Type: Publication
• Source Agency: SAE International
• Report/Paper Numbers: 2000-01-0683
• Files: TRIS, SAE
• Created Date: Dec 9 2021 10:17AM