Soft Computing Mass Air Flow Estimator for a Single-Cylinder SI Engine

Taglialatela, F.; Cesario, N.; Lavorgna, Mario

doi:10.4271/2006-01-0010

Cited by 8 publications

(4 citation statements)

References 13 publications

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“…DT applications to Large Bore combustion engines could be significantly relevant, primarily due to the expensive nature of the testing. Collecting large amounts of engine performance data can be a costly and timeconsuming process; the employment of DTs allows simulating and analyzing engine performance in a wide range of conditions, reducing the need for physical testing [6][7][8]. Differently from others digital models, DTs perform reciprocal data exchange with the physical system, keeping the model up to date, and making it increasingly adherent to the physical system it replicates [9].…”

Section: Introductionmentioning

confidence: 99%

Preliminary experimental data analysis for Digital Twin development of a large bore Dual-Fuel engine

Mondo,

Pivetta,

Fratti

et al. 2023

J. Phys.: Conf. Ser.

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In recent years, digital models, and in particular Digital Twins (DTs), have seen a growing interest due to their ability to provide support in the development of more efficient systems and processes. This study presents the preliminary steps taken to develop a DT model for a marine Large Bore Dual-Fuel engine manufactured by Wärtsilä. The correlation between dependend and independent data set variables is presented in order to map the engine behaviour and validate the DT model before becoming operational. The analyses are conducted using the engine in gas mode, operating at 85% of Load (at the nominal speed of 600rpm). This operating point represents the typical target design for constant speed applications. The engine efficiency, emissions and combustion chamber parameters are investigated by varying the air-fuel mixture pressure, timing and duration parameters. Sensitivity analysis presents a tight relation between Nitrogen Oxides and Hydrocarbons (HC) emissions by varying the Scavenging Air Pressure. The HC emission function around the nominal value of the Pilot Fuel Injection Duration reverse its trend, while In Cylinder-Pressure and Combustion Duration functions presents opposite gradients. By advancing the Pilot Fuel Injection timing is shown an increase in Engine Efficiency respect to others input parameters.

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Section: Introductionmentioning

confidence: 99%

Preliminary experimental data analysis for Digital Twin development of a large bore Dual-Fuel engine

Mondo,

Pivetta,

Fratti

et al. 2023

J. Phys.: Conf. Ser.

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“…Hot film anemometers, usually installed on-board to measure the air mass flow at the intake [10,11,12], show a non-linear time response [13,14,15] that varies in the range of 30-50 ms, and are subjected to severe ageing due to the accumulation of dust on the sensing element, which causes a bias that can reach 20% of the measured value [16,17,18]. In addition, they are usually placed at the beginning of the intake line, far away from the cylinder port, thus limiting any cycle-to-cycle mass flow determination and being significantly affected by intake system filling dynamics.…”

Section: Introductionmentioning

confidence: 99%

Cylinder charge composition observation based on in-cylinder pressure measurement

et al. 2019

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Accurate cylinder charge and composition estimation is crucial for proper combustion control, however, current sensors and models show different issues for transient estimation. The work presented in this paper combines a novel technique for trapped mass estimation, which relies on the in-cylinder pressure resonance, with on-board engine sensors by taking into account the sensors and the intake manifold dynamics with a closed-loop observer.The resonance method provides a measurement of trapped mass with one cycle resolution. This measurement feeds a Kalman filter to improve the transient and steady response of the intake charge and composition estimation. The observer was validated in a four stroke heavy-duty engine, showing fast transient capabilities and an adequate steady-state accuracy.

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“…One of the advantages of these networks is that they can be used for systems with high nonlinearity; however, they show poor performance in extrapolation outside the training region which is a big disadvantage. Works done in [7], [30], [31], and [32] are among the ones that have used neural networks for VE calibration and air charge estimation.…”

Section: Overview Of Thesismentioning

confidence: 99%

“…As discussed before, in residual mass estimation section using Method 2, which was a new approach to estimate residual mass with online applicability, one of the two residual components is trapped residual mass which is equal to cylinder mass at IVO as mentioned in Eq. (4)(5)(6)(7)(8)(9)(10)(11). Mass at IVO is estimated by having pressure and temperature at this point using ideal gas law:…”

Section: End Of Blowdown To Ivo (3 To 4) Equationsmentioning

confidence: 99%

Air Charge Estimation for an Si Engine Using in-Cylinder Pressure Sensor

Yazdani¹

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Soft Computing Mass Air Flow Estimator for a Single-Cylinder SI Engine

Cited by 8 publications

References 13 publications

Preliminary experimental data analysis for Digital Twin development of a large bore Dual-Fuel engine

Preliminary experimental data analysis for Digital Twin development of a large bore Dual-Fuel engine

Cylinder charge composition observation based on in-cylinder pressure measurement

Air Charge Estimation for an Si Engine Using in-Cylinder Pressure Sensor

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