A Production Wide-Range AFR Sensor Response Diagnostic Algorithm for Direct-Injection Gasoline Application

Recursive parameter estimation of exhaust gas oxygen sensors with input-dependent time delay and linear parameters

“…In Guardiola, Pla, Blanco-Rodriguez, Mazer, and Hayat (2013) an algorithm is presented that estimates the sensor offset using a Kalman filter. Algorithms that estimate the parameters that describe the dynamics of the sensor are presented in Michalske and Auth (2008), Umehara (2010), Rupp and Guzzella (2010a), Rupp and Guzzella (2010b), Maloney (2001). However, the latter approaches require specific excitation scenarios to work properly.…”

The Study of Signal Characteristics of Critical Sensors on a Coal-Bed Gas Engine

“…For highly accurate λ control, noise caused by pumping effect must be filtered. This can be achieved by proper sampling strategy [7] and by the choice of pass-band of UEGO sensor signal's digital filter according to frequency domain analysis [8].…”

Recurrent Neural Networks for Air-Fuel Ratio Estimation and Control in Spark-Ignited Engines

“…In such an application the feedback provided by a UEGO lambda sensor should be used to adaptively modify the RNN estimator to take into account exogenous effects. Moreover, RNN-based estimators are well suited for diagnosis of injection/air intake system and lambda sensor failures (Maloney, 2001). Differently from control applications, in this case it is envisioned that the AFR prediction includes the measuring delay.…”