公开(公告)号：US20210109057A1

公开(公告)日：2021-04-15

申请号：US16599663

申请日：2019-10-11

Applicant: DELPHI TECHNOLOGIES IP LIMITED

Inventor： MARK W. GOSE ,  JERRY W. CAMPBELL ,  EUGENE V. RIPLEY ,  MARC R. ENGELHARDT ,  JINGYI HOU

IPC: G01N27/41 ,  G01N27/406

Abstract: An oxygen sensor is in a system including compensator circuitry connected to the oxygen sensor. The oxygen sensor includes a pump cell and the compensator circuitry includes a feedback control loop which includes a digital compensator which determines and outputs a compensation current to the pump cell or adjusts a pump cell voltage. A method of controlling the oxygen sensor includes, subsequent to a period of time when the feedback control loop is disrupted, pumping a balancing current into or out the pump cell for a balancing time interval, the balancing current and/or the balancing time interval is dependent on a current pumped into or out of the pump cell prior to the feedback control loop being disrupted.

公开(公告)号：US20210108585A1

公开(公告)日：2021-04-15

申请号：US16599621

申请日：2019-10-11

Applicant: DELPHI TECHNOLOGIES IP LIMITED

Inventor： MARK W. GOSE ,  JERRY W. CAMPBELL ,  EUGENE V. RIPLEY ,  MARC R. ENGELHARDT ,  JINGYI HOU

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

Abstract: A method of operating an oxygen sensor system is provided where the system includes an oxygen sensor, the oxygen sensor including a pump cell, and wherein the oxygen sensor is connected to associated circuitry such that the associated circuitry controls operation of the pump cell. The pump cell includes a pump line connected to a pump electrode of the pump cell and a return line connected to a return electrode of the pump cell. The method includes, subsequent to a diagnostic process, raising the potential of the pump line for a predetermined period of time by injecting current onto the pump line.