Integration of intermittent measurement from in-cylinder pressure resonance in a multi-sensor mass flow estimator

[EN] A novel technique of trapped mass determination, based on the in-cylinder pressure resonance, has been recently published by the authors. However, the method only works when sufficient resonance intensity exists and the current formulation might preclude its implementation in real-time due to excessive computational burden. The present paper proposes an iterative algorithm for reducing the number of operations, an adaptive filter to identify faulty measurements and a Kalman filter that combines several sensors and models, currently used in commercial light-duty engines, to ensure a continous estimation of trapped mass, air mass, and exhaust gas recirculation (EGR). The filter is implemented using experimental data of a EURO 6 light-duty engine in a world harmonize light-duty test cycle (WLTC), showing the potential of being implemented in real driving conditions with robustness and harnessing a new measurement to improve the accuracy and response of current estimations. ; Guardiola, C.; Pla Moreno, B.; Bares-Moreno, P.; Peyton Jones, J. (2019). Integration of intermittent measurement from in-cylinder pressure resonance in a multi-sensor mass flow estimator. Mechanical Systems and Signal Processing. 131:152-165. https://doi.org/10.1016/j.ymssp.2019.05.052 ; S ; 152 ; 165 ; 131 ; Broatch, A., Guardiola, C., Pla, B., & Bares, P. (2015). A direct transform for determining the trapped mass on an internal combustion engine based on the in-cylinder pressure resonance phenomenon. Mechanical Systems and Signal Processing, 62-63, 480-489. doi:10.1016/j.ymssp.2015.02.023 ; Guardiola, C., Triantopoulos, V., Bares, P., Bohac, S., & Stefanopoulou, A. (2016). Simultaneous Estimation of Intake and Residual Mass Using In-Cylinder Pressure in an Engine with Negative Valve Overlap. IFAC-PapersOnLine, 49(11), 461-468. doi:10.1016/j.ifacol.2016.08.068 ; Guardiola, C., Martín, J., Pla, B., & Bares, P. (2017). Cycle by cycle NOx model for diesel engine control. Applied Thermal Engineering, 110, 1011-1020. ...