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EXHAUST SYSTEM FOR VARIABLE CYLINDER ENGINE

  • US 20130255237A1
  • Filed: 12/19/2012
  • Published: 10/03/2013
  • Est. Priority Date: 03/28/2012
  • Status: Active Grant
First Claim
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1. An exhaust system for a variable cylinder engine comprising:

  • a variable cylinder engine having an activation cylinder group operating normally and a deactivation cylinder group wherein a fuel supply is stopped under a particular condition;

    an activation side exhaust pipe connected to the activation cylinder group;

    a deactivation side exhaust pipe connected to the deactivation cylinder group;

    a gathering section connected to downstream ends of the activation side exhaust pipe and the deactivation side exhaust pipe;

    a sub-catalyst disposed in the activation side exhaust pipe; and

    a main catalyst disposed at the gathering section, wherein;

    the main catalyst is formed such that gas passing therethough is partitioned into flows independent of each other in a flow path direction; and

    the activation side exhaust pipe and the deactivation side exhaust pipe are connected in a mutually independent state to the main catalyst.

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