Model based diagnosis for automotive engines-algorithm developmentand testing on a production vehicle
Gerler, J.; Costin, M.; Xiaowen Fang; Kowalczuk, Z.; Kunwer, M.; Monajemy, R.
Control Systems Technology, IEEE Transactions on
Volume 3, Issue 1, Mar 1995 Page(s):61 - 69
Digital Object Identifier 10.1109/87.370711
Summary:A complete diagnostic algorithm is presented for detecting and
isolating faults of actuators and sensors of an automotive engine. The
algorithm is built around the concept of analytical redundancy and
utilizes structured parity equations. The parity equations rely on a
nonlinear and dynamic model, obtained by identification using data from
a single production vehicle with a 3.1 l V-6 engine. Tests performed
with the diagnostic algorithm on the same vehicle show excellent
performance under different fault conditions. Several important issues
require further investigation, including long-term climatic effects,
vehicle aging, car-to-car variations, the automation of the calibration
procedure and implementation in the face of processor limitations
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