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Automotive exhaust gas sensing systems

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2 Author(s)
Visser, J.H. ; Ford Res. Lab., Dearborn, MI, USA ; Soltis, R.E.

Gas sensors have become an integral component of control systems for internal combustion engines to provide information for feedback control of air-to-fuel ratio (A/F) to achieve improved vehicle performance and fuel economy as well as decreased levels of emission. Increasingly stringent limits on evaporative emissions as well as the requirement of having on-board diagnostics (OBD), which includes catalyst monitoring, necessitate the monitoring of exhaust gas constituents [i.e., carbon monoxide (CO), hydrocarbons (HCs), and oxides of nitrogen (NOx)]. The different sensing requirements, testing procedures, environmental parameters, and need for microsystem-based realizations are discussed

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Instrumentation and Measurement, IEEE Transactions on  (Volume:50 ,  Issue: 6 )