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Hybrid PGM-ZPGM TWC Exhaust Treatment Systems

  • US 20150258496A1
  • Filed: 05/28/2015
  • Published: 09/17/2015
  • Est. Priority Date: 11/26/2013
  • Status: Abandoned Application
First Claim
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1. A system for treating the exhaust of a combustion engine, comprising:

  • at least one exhaust manifold suitable for accepting at least one stream of exhaust;

    a closed-couple converter having a first catalyst body comprising at least one platinum group metal catalyst; and

    an underfloor converter having a second catalyst body consisting of a zero platinum group metal;

    wherein the at least one exhaust manifold is communicatively coupled to the closed-couple converter and underfloor converter.

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