Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Aed M. Dudar0
Date of Patent
February 9, 2021
0Patent Application Number
158534280
Date Filed
December 22, 2017
0Patent Citations Received
Patent Primary Examiner
Patent abstract
Methods and systems are provided for diagnosing degradation of an exhaust gas recirculation (EGR) valve. In one example, a method may include, during a vehicle key-off condition, routing compressed air through an EGR passage housing the EGR valve, and indicating degradation of the EGR valve based on a change in an estimated EGR pressure, upon a commanded change in EGR valve position.
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