Invention Grant
- Patent Title: Air fuel ratio control system for internal combustion engines
- Patent Title (中): 内燃机空燃比控制系统
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Application No.: US12188607Application Date: 2008-08-08
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Publication No.: US07937209B2Publication Date: 2011-05-03
- Inventor: Kenneth P. Dudek , Sai S. V. Rajagopalan , Stephen Yurkovich , Yann G. Guezennec , Shawn W. Midlam-Mohler , Louis A. Avallone , Igor Anilovich
- Applicant: Kenneth P. Dudek , Sai S. V. Rajagopalan , Stephen Yurkovich , Yann G. Guezennec , Shawn W. Midlam-Mohler , Louis A. Avallone , Igor Anilovich
- Assignee: GM Global Technology Operations LLC
- Current Assignee: GM Global Technology Operations LLC
- Main IPC: F02D41/30
- IPC: F02D41/30 ; F02D41/00
Abstract:
A fuel control system of an engine system comprises 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 at least one fuel command and determines at least one expected oxygen concentration of the exhaust gas. The control module determines a final fuel command for the engine system based on the pre-catalyst EGO signal, the fuel command, and the expected oxygen concentration.
Public/Granted literature
- US20090048766A1 AIR FUEL RATIO CONTROL SYSTEM FOR INTERNAL COMBUSTION ENGINES Public/Granted day:2009-02-19
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