公开(公告)号：US09297843B2

公开(公告)日：2016-03-29

申请号：US13832263

申请日：2013-03-15

Applicant: GM Global Technology Operations LLC

Inventor： Bradley C. Gibson ,  Eric M. Hall ,  John W. Siekkinen ,  Stephen Paul Levijoki

IPC: F02D41/14 ,  G01R27/02 ,  F01N11/00

CPC classification number: G01R27/02 ,  F01N11/007 ,  F01N2560/025 ,  F02D41/1441 ,  F02D41/1455 ,  F02D41/1456 ,  F02D41/1494 ,  F02D41/1495

Abstract: A diagnostic system of a vehicle includes an impedance module and a diagnostic module. The impedance module determines an impedance of a sensing element of an exhaust gas oxygen sensor based on a response of the sensing element to a change in current through the sensing element. The diagnostic module selectively diagnoses a fault associated with the exhaust gas oxygen sensor based on the impedance of the sensing element.

Abstract translation: 车辆的诊断系统包括阻抗模块和诊断模块。 阻抗模块基于感测元件对通过感测元件的电流变化的响应来确定排气氧传感器的感测元件的阻抗。 诊断模块基于感测元件的阻抗选择性地诊断与排气氧传感器相关联的故障。