Development of Close-Coupled Catalyst(CCC) System to Meet EC Stage 2

Ec Stage 2를 위한 Close-Coupled Catalyst(CCC) System의 개발

  • Published : 1996.08.01

Abstract

A large portion(above 70%) fo the hydrocorbon and NOx emissions for a typical vehicle occur mainly before the conventional underbody catalyst reaches activation temperature. To meet the stringent regulation as EC stage 2, the emissions produced during this period must be reduced. One of alternative techniques is to place CCC(Close-Coupled Catalyst) near the exhaust manifold. In this study, the characteristics of CCC are observed through EEC mode.

Keywords

References

  1. SAE950254 High Temperature Ultra Stable Close-Coupled Catalysts Z. HU;R. M. Heck
  2. SAE950259 The Use of Palladium in Advanced Catalyst R. J. Brisley;G. R. Chandler;H. R. Jones;P. J. Anderson;P. J. Shady
  3. SAE930249 Evolution of Pd/Rh TWC Catalyst Technology Y. K. Lui;J. C. Dettling
  4. SAE930386 Use of Light-Off Catalysts to Meet the California LEV/ULEV Standards J. C. Summers;J. F. Skowron;M. J. Miller
  5. SAE930739 Hydrocarbon Traps for Controlling Clod Start Emissions J. K. Hochmuth;P. L. Burk;C, Telentio;M. J. Mignano
  6. SAE950255 Trimetallic Three-way Catalyst A. Punke;U. Dahle;S. J. Tauster;H. N. Rabinowitz;T. Yamada
  7. SAE950258 Impact of Pt-Rh and Pd-Rh interactions on Performance of Bimetal Ctalysts J. G. Nunana;W. B. Williamson;H. J. Robota;M. G. Henk
  8. SAE950407 Advances in Durability and Performance of Ceramic Preconverter systems Louis S. Socha(et al.)
  9. SAE942072 Gasoline Burner for Rapid Catalyst Light-off J. S. Hepburn;A. A. Adamczyk;R. A. Pawlowicz
  10. SAE950404 Durability of Extruded Electrically Heated Catalysts D. S. Weiss(et al.)