公开(公告)号：US10746118B1

公开(公告)日：2020-08-18

申请号：US16460611

申请日：2019-07-02

Applicant: DELPHI TECHNOLOGIES IP LIMITED

Inventor： Mark W. Gose ,  Jerry W. Campbell ,  Eugene V. Ripley ,  Marc R. Englehardt ,  Jingyi Hou

IPC: F02D41/14 ,  F02D41/20

Abstract: Compensator circuitry is provided for an oxygen sensor which includes a pump cell and a reference cell. The compensator circuitry includes a feedback control loop which maintains the reference cell at a reference voltage. The feedback control loop includes a digital compensator which determines and outputs a compensation current to the pump cell dependent on a reference voltage measured from the reference cell. The digital compensator also suspends the determination and output of the compensation current for a set time which is dependent on detection of edges in an oxygen sensor heater Pulse Width Modulation signal.