×

Method and system for particulate filter leakage detection

  • US 9,645,068 B2
  • Filed: 02/11/2016
  • Issued: 05/09/2017
  • Est. Priority Date: 10/13/2015
  • Status: Active Grant
First Claim
Patent Images

1. A method, comprising:

  • flowing exhaust from downstream of a first filter towards each of a first pressure sensor coupled at a first location in an exhaust pipe and a second pressure sensor coupled at a second location in a passage external to the exhaust pipe, the passage including a second filter coupled to an electric circuit; and

    indicating degradation of the first filter based on an interval between successive regenerations of the second filter.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×