Learning reference governor for cycle-to-cycle combustion control with misfire avoidance in spark-ignition engines at high exhaust gas recirculation–diluted conditions

Maldonado, Bryan P.; Li, Nan; Kolmanovsky, Ilya; Stefanopoulou, Anna G.

doi:10.1177/1468087420929109

Cited by 20 publications

(10 citation statements)

References 32 publications

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“…MVMs provide a good approach for calculating combustion torque. To investigate other combustion properties such as CA50, IMEP, residual gas temperature, etc., an MVM can be integrated with other modeling methodologies, such as chemical reaction 62 and/or empirical equations 9,11 to capture interested combustion phenomena such as cyclic variations, 11 misfire detections, 9 and NOx emissions. 62 On the other hand, it was not limited to studying the engine performance itself but can also be integrated with other subsystem models to form an vehicle level model for investigating vehicle performance such as acceleration and adaptive cruise control.…”

Section: Applications Of Mvmsmentioning

confidence: 99%

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Review of engine control-oriented combustion models

Tang

Zhu

Men

2021

International Journal of Engine Research

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As requirements for continuously improving internal combustion engine fuel economy with satisfactory emissions, model-based control strategies are often used to optimize the combustion process. To apply advanced control techniques for closed-loop engine combustion control, control-oriented engine combustion models are necessary and they are physics-based, accurate enough for model-based control, computationally low cost, and capable of real-time simulations. In addition, control-oriented combustion model with adequate fidelity may need to adapt to physical system and environment changes over time to maintain model-based control performance, such as model-reference (guided) control, where the control-oriented combustion model runs in real-time to generate an error signal between physical system and reference-model output for feedback control. This paper provides a review of existing control-oriented engine combustion models, along with their associated applications. Three main groups of control-oriented combustion models are reviewed from simple to sophisticated physics-based dynamic models, including mean-value, Wiebe function-based, and reaction-based models. The fundamental principle of each model group is reviewed briefly and its applications are also addressed. At the macro level, a control-oriented engine model can be used for crank angle-based and/or cycle-based control. As the engine control hardware performance continuous improving with reduced cost, model-reference (guided) combustion control shall become reality since now it is feasible to run a physics-based control-oriented engine combustion model inside an engine control module. On the other hand, each model group, even for the simple mean-value model, has its own applicable scenarios.

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Section: Applications Of Mvmsmentioning

confidence: 99%

“…can be obtained based on certain assumptions. Some typical methods, such as polynomial assumption, 8,9 Gaussian correlation, 10,11 or low order parameterized function, 12 are presented, respectively, in the modeling literature. Note that the black box model is cheap to evaluate and widely used in machine learning 9 recently.…”

Section: Introductionmentioning

confidence: 99%

Review of engine control-oriented combustion models

Tang

Zhu

Men

2021

International Journal of Engine Research

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“…Although previous research has focused on the estimation of such a limit in order to use feedback control to minimize fuel consumption, complete avoidance of misfires and partial burns remains an open problem. 7,8 The cycle-to-cycle variations that occur at the dilute limit have been shown to combine stochastic (or unobservable) variations such as turbulence and local mixture inhomogeneity at the spark plug with deterministic effects caused by the cycle-to-cycle coupling of initial composition through residual gases. [9][10][11] The extension of the ignition limit can thus be accomplished by predictive control strategies that anticipate such events and perform corrective control commands before partial burns and misfires occur.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of residual gas fraction estimation methods for cycle-to-cycle combustion variability analysis and modeling

Maldonado

Kaul

2021

International Journal of Engine Research

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Cycle-to-cycle combustion variability in spark-ignition engines during normal operation is mainly caused by random perturbations of the in-cylinder conditions such as the flow velocity field, homogeneity of the air-fuel distribution, spark energy discharge, and turbulence intensity of the flame front. Such perturbations translate into the variability of the energy released observed at the end of the combustion process. During normal operating conditions, the cycle-to-cycle variability (CCV) of the energy release behaves as random uncorrelated noise. However, during diluted combustion, in either the form of exhaust gas recirculation (EGR) or excess air (lean operation), the CCV tends to increase as dilution increases. Moreover, when the ignition limit is reached at high dilution levels, the combustion CCV is exacerbated by sporadic occurrences of incomplete combustion events, and the uncorrelation assumption no longer holds. The low or null energy released by partial burns and misfires has an impact on the following combustion event due to the residual gas that carries burned and unburned gases, which contributes to the deterministic coupling between engine cycles. Many residual gas fraction estimation methods, however, only address the nominal case where complete combustion occurs and combustion events are uncorrelated. This study evaluates the efficacy of such methods on capturing the effects of partial burns and misfires on the residual gas estimate for high-EGR operation. The advantages and disadvantages of each method are discussed based on their ability to generate cycle-to-cycle estimates. Finally, a comparison between the different estimation techniques is presented based on their usefulness for control-oriented modeling.

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“…Components of this system are used in many areas of internal combustion engine operation. These include misfire monitoring [1,2], diesel particulate filter monitoring [3][4][5][6], catalyst monitoring [7,8], fuel system monitoring [9,10], and EGR system monitoring [11][12][13]. The common features of these systems are that they supervise the operation of the electronic control systems, and that their operation aims to control engine operation in order to meet ecological requirements.…”

Section: Introductionmentioning

confidence: 99%

Investigations of the Usefulness of Dilatometric Methods in the Diagnostics of Combustion Engines

Idzior

Karpiuk

2021

Energies

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Due to rapidly progressing development in the field of materials used in the automotive industry, research methods enabling the validation of the properties of materials used in specific applications, e.g., engines, are gaining importance. One such method is dilatometry, which belongs to a branch of physics dealing with methods of measuring the thermal expansion of bodies. It includes assessment study of the dependence of body measurements on external conditions. The authors propose that dilatometric methods could be used to diagnose damage and the causes of engine damage that has already occurred. This is a novel approach in diagnostic methods. The aim of the paper was to validate the proposed method for diagnosing of combustion engine components. Two cases of malfunction of this type of device are presented. In the first case, the subject of research is needle-nozzle holder precision pairs used in engines with a power of 150 kW. The main achievement of the research is revealing the occurrence of different thermal expansion values of the materials in the individual nozzle holders, with specific needles in particular causing adverse changes in clearances between these elements. The other case involved tests with respect to engine pistons. The proposed test method allows for a very accurate and relatively quick determination of the degree of damage to their surface. The conducted research confirms the usefulness of dilatometric methods in diagnosing combustion engines—their application makes it possible to determine the causes for the formation of the irregularities. The presented results are promising and enable further development of the methods and their implementation not exclusively with regard to internal combustion engines.

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Learning reference governor for cycle-to-cycle combustion control with misfire avoidance in spark-ignition engines at high exhaust gas recirculation–diluted conditions

Cited by 20 publications

References 32 publications

Review of engine control-oriented combustion models

Review of engine control-oriented combustion models

Evaluation of residual gas fraction estimation methods for cycle-to-cycle combustion variability analysis and modeling

Investigations of the Usefulness of Dilatometric Methods in the Diagnostics of Combustion Engines

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