Nitrogen oxide emissions can be controlled through engine operation with lean homogeneous air/fuel mixtures. This emission control approach precludes the need for exhaust gas recirculation (EGR) and secondary air injection systems. The Lean Mixture concept results in similar emissions, fuel economy, and driveability when compared to EGR systems tailored to similar emission levels with similar aftertreatment systems. A Lean Mixture-Manifold Reactor emission control system was used to evaluate the effect of compression ratio and leaded fuel on vehicle emissions and fuel economy. System durability is shown for a Lean Mixture-Catalytic Converter system with lead-free fuel and for a Lean Mixture system without aftertreatment with leaded fuel. /GMRL/

  • Corporate Authors:

    Society of Automotive Engineers (SAE)

    400 Commonwealth Drive
    Warrendale, PA  United States  15096
  • Authors:
    • Schweikert, J F
    • Gumbleton, J J
  • Publication Date: 1976-2

Media Info

  • Pagination: 15 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00142400
  • Record Type: Publication
  • Report/Paper Numbers: SAE #760226
  • Files: TRIS
  • Created Date: Apr 13 1977 12:00AM