| DETECTION AND ISOLATION OF FAULTS IN THE EXHAUST PATH OF TURBOCHARGED AUTOMOTIVE ENGINES |
| R. SALEHI1, A. ALASTY1, M. SHAHBAKHTI2, G. VOSSOUGHI1 |
1Sharif University of Technology
2Michigan Technological University |
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| ABSTRACT |
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Detection and isolation of faults in the exhaust gas path of a turbocharged spark ignition (SI) engine is an essential part of the engine control unit (ECU) strategies to minimize exhaust emission and ensure safe operation of a turbocharger. This paper proposes a novel model-based strategy to detect and isolate an exhaust manifold leakage and a stuckclosed wastegate fault. The strategy is based on a globally optimal parameter estimation algorithm which detects a virtual hole area in the exhaust manifold. The estimation algorithm requires observation of the exhaust manifold |
| Key Words:
SI engine, FDI, Turbocharger, Leakage, Wastegate, Sliding mode observer |
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