Invention Grant
US09297843B2 Fault diagnostic systems and methods using oxygen sensor impedance
有权
使用氧传感器阻抗的故障诊断系统和方法
- Patent Title: Fault diagnostic systems and methods using oxygen sensor impedance
- Patent Title (中): 使用氧传感器阻抗的故障诊断系统和方法
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Application No.: US13832263Application Date: 2013-03-15
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Publication No.: US09297843B2Publication Date: 2016-03-29
- Inventor: Bradley C. Gibson , Eric M. Hall , John W. Siekkinen , Stephen Paul Levijoki
- Applicant: GM Global Technology Operations LLC
- Applicant Address: US MI Detroit
- Assignee: GM Global Technology Operations LLC
- Current Assignee: GM Global Technology Operations LLC
- Current Assignee Address: US MI Detroit
- Main IPC: F02D41/14
- IPC: F02D41/14 ; G01R27/02 ; F01N11/00
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.
Public/Granted literature
- US20140278013A1 FAULT DIAGNOSTIC SYSTEMS AND METHODS USING OXYGEN SENSOR IMPEDANCE Public/Granted day:2014-09-18
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