Invention Grant
US07881859B2 Torque converter clutch control system and post oxygen sensor performance diagnostic system
有权
扭矩转换器离合器控制系统和后氧传感器性能诊断系统
- Patent Title: Torque converter clutch control system and post oxygen sensor performance diagnostic system
- Patent Title (中): 扭矩转换器离合器控制系统和后氧传感器性能诊断系统
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Application No.: US12039130Application Date: 2008-02-28
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Publication No.: US07881859B2Publication Date: 2011-02-01
- Inventor: Douglas J. Moening , Igor Anilovich , John W. Siekkinen , Jayson S. Schwalm , Daniel J. Wickman
- Applicant: Douglas J. Moening , Igor Anilovich , John W. Siekkinen , Jayson S. Schwalm , Daniel J. Wickman
- Assignee: GM Global Technology Operations, Inc.
- Current Assignee: GM Global Technology Operations, Inc.
- Main IPC: F02D45/00
- IPC: F02D45/00 ; G06F19/00
Abstract:
A system comprises a post oxygen performance diagnostic (POPD) module that performs a POPD of a post oxygen sensor, wherein the POPD includes a deceleration fuel cutoff (DFCO) portion. A torque converter control module adjusts operation of a torque converter clutch (TCC). The POPD module and the torque converter control module operate the TCC to control engine speed above a predetermined engine speed during the DFCO portion of the POPD. A method comprises performing a POPD of a post oxygen sensor, wherein the POPD includes a deceleration fuel cutoff (DFCO) portion and adjusting operation of a torque converter clutch (TCC) to control engine speed above a predetermined engine speed during the DFCO portion of the POPD.
Public/Granted literature
- US20090118988A1 TORQUE CONVERTER CLUTCH CONTROL SYSTEM AND POST OXYGEN SENSOR PERFORMANCE DIAGNOSTIC SYSTEM Public/Granted day:2009-05-07
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