This paper presents a method to enhance fault isolation without adding physical sensors on a turbocharged spark ignited petrol engine system by designing additional residuals from an initial observer-based residuals setup. The best candidates from all potential additional residuals are selected using the concept of sequential residual generation to ensure best fault isolation performance for the least number of additional residuals required. A simulation testbed is used to generate realistic engine data for the design of the additional residuals and the fault isolation performance is verified using structural analysis method.
This is a preprint, arXiv:2002.03207, posted on ArXiv. The fulltext for v2, was made available on ArXiv on Tue, 5 May 2020 00:48:17 UTC. The preprint has not been formally peer-reviewed by ArXiv.