Knock recognition based on vibration signal and Wiebe function in a heavy-duty spark ignited engine fueled with Methane

Napolitano, Pierpaolo; Jiménez, Irina; Plá, Benjamín; Tunestål, Per

doi:10.1016/j.fuel.2021.122957

Cited by 12 publications

(1 citation statement)

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“…The estimation of the in-cylinder pressure of internal combustion engines plays a key role within monitoring and control systems to ensure operation efficiency, regulate emissions and detect possible engine malfunctioning [1][2][3][4][5]. Direct measurements provided by dynamic pressure sensors are clearly a possible solution; see, for example, [6][7][8][9].…”

Section: Introductionmentioning

confidence: 99%

In-Cylinder Pressure Estimation from Rotational Speed Measurements via Extended Kalman Filter

Quartullo

Garulli

Giannitrapani

et al. 2023

Sensors

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Real-time estimation of the in-cylinder pressure of combustion engines is crucial to detect failures and improve the performance of the engine control system. A new estimation scheme is proposed based on the Extended Kalman Filter, which exploits measurements of the engine rotational speed provided by a standard phonic wheel sensor. The main novelty lies in a parameterization of the combustion pressure, which is generated by averaging experimental data collected in different operating points. The proposed approach is validated on real data from a turbocharged compression ignition engine, including both nominal and off-nominal working conditions. The experimental results show that the proposed technique accurately reconstructs the pressure profile, featuring a fit performance index exceeding 90% most of the time. Moreover, it can track changes in the engine operating conditions as well as detect the presence of cylinder-to-cylinder variations.

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