Invention Grant
US07809490B2 Phase and frequency error based asymmetrical AFR pulse reference tracking algorithm using the pre-catalyst O2 sensor switching output
有权
基于相位和频率误差的非对称AFR脉冲参考跟踪算法使用预催化剂O2传感器切换输出
- Patent Title: Phase and frequency error based asymmetrical AFR pulse reference tracking algorithm using the pre-catalyst O2 sensor switching output
- Patent Title (中): 基于相位和频率误差的非对称AFR脉冲参考跟踪算法使用预催化剂O2传感器切换输出
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Application No.: US12131557Application Date: 2008-06-02
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Publication No.: US07809490B2Publication Date: 2010-10-05
- Inventor: Sharon Liu , Kenneth P. Dudek , Robert Douglas Shafto
- Applicant: Sharon Liu , Kenneth P. Dudek , Robert Douglas Shafto
- Assignee: GM Global Technology Operations, Inc.
- Current Assignee: GM Global Technology Operations, Inc.
- Main IPC: F02D41/00
- IPC: F02D41/00
Abstract:
A fuel control system of an engine system comprising a pre-catalyst exhaust gas oxygen (EGO) sensor and a control module. The pre-catalyst EGO sensor determines a pre-catalyst EGO signal based on an oxygen concentration of an exhaust gas. The control module determines a dither signal. The control module determines a fuel command based on the pre-catalyst EGO signal and the dither signal.
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