Invention Grant
- Patent Title: Method and system for detecting a fault during catalyst light-off
- Patent Title (中): 催化剂熄灭时检测故障的方法和系统
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Application No.: US12608254Application Date: 2009-10-29
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Publication No.: US08504278B2Publication Date: 2013-08-06
- Inventor: Douglas R. Verner , Jonathan T. Shibata , Allen B. Rayl , Halim G Santoso , Kenneth J. Buslepp
- Applicant: Douglas R. Verner , Jonathan T. Shibata , Allen B. Rayl , Halim G Santoso , Kenneth J. Buslepp
- Assignee: GM Global Technology Operations LLC
- Current Assignee: GM Global Technology Operations LLC
- Main IPC: F02D41/22
- IPC: F02D41/22 ; F02D41/00 ; F01N3/10 ; F02M57/04 ; F02M57/06 ; F02B3/00 ; F02B17/00
Abstract:
A system and method for controlling engine operation includes a timer module that determines a time period from when a catalyst light-off mode is entered to when an oxygen sensor signal reaches an oxygen sensor threshold and a comparison module that generates an error signal and determines when the time period is above a time threshold.
Public/Granted literature
- US20110106392A1 METHOD AND SYSTEM FOR DETECTING A FAULT DURING CATALYST LIGHT-OFF Public/Granted day:2011-05-05
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