Title:
SENSOR DIAGNOSIS
Document Type and Number:
Japanese Patent JP2003120407
Kind Code:
A
Abstract:
To provide an accurate cylinder air-charge estimate.
First, a sensor-based powertrain torque estimate is obtained. Next, a torque converter-based powertrain torque estimate is obtained when the torque converter clutch is unlocked. The two estimates are compared, and if they differ by more than a predetermined amount, sensor drift is diagnosed, and corrected.
Inventors:
Voutyras, Julia
Jankovic, Mrdjan J.
Jankovic, Mrdjan J.
Application Number:
JP2002000303938
Publication Date:
April 23, 2003
Filing Date:
October 18, 2002
Export Citation:
Assignee:
FORD GLOBAL TECHNOL INC
International Classes:
F02D45/00; F02D29/00; F02D41/02; F02D41/18; F02D41/22; G01F1/698; G01F25/00; B60W50/02; F16H59/46; F16H63/50; (IPC1-7): F02D45/00; F02D29/00
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