Model Predictive Control for Combustion Timing and Load Control in HCCI Engines

Ebrahimi, Khashayar; Koch, Charles Robert

doi:10.4271/2015-01-0822

Cited by 23 publications

(16 citation statements)

References 53 publications

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“…The start of combustion (SOC) can be predicted by a variety of models [6,8,10,18,19], such as multi-dimensional CFD models, multi-zone models, and single zone models. For real-time control, a compromise between the accuracy of model and the computation time is required.…”

Section: Constant Volume Combustion Processmentioning

confidence: 99%

“…Combustion timing control is a main problem for diesel LTC combustion control [6][7][8][9][10]. The combustion timing affects the fuel economy, combustion stability, in-cylinder peak pressure and emission [9].…”

Section: Introductionmentioning

confidence: 99%

“…To accurately predict the combustion process, a precise combustion model is a necessity. A control oriented one zone model was used in [7,10,17,18] to model and control the combustion phasing of the blended-fuel HCCI engine. In [13], a control oriented charge mixing and two zone HCCI combustion model was constructed based on the assumption that the in-cylinder charge is divided into the wellmixed and unmixed zones.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Control oriented modeling and analysis of gas exchange and combustion processes for LTC diesel engine

Dong

Liu

Zhang

et al. 2017

Applied Thermal Engineering

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Section: Constant Volume Combustion Processmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Control oriented modeling and analysis of gas exchange and combustion processes for LTC diesel engine

Dong

Liu

Zhang

et al. 2017

Applied Thermal Engineering

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“…Recent research has shown that a cycle-to-cycle control approach generally enables GCAI operation [3,4]. Multi-scale control methods hold promise for further improvement in terms of process stabilization and extension of the operating range.…”

Section: Gasoline Controlled Auto-ignition Modelmentioning

confidence: 99%

Reduced Order Modeling for Multi-scale Control of Low Temperature Combustion Engines

Nuss

Ritter

Wick

et al. 2018

Notes on Numerical Fluid Mechanics and Multidisciplinary Design

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Internal combustion engines face tightening limits on pollutant and greenhouse gas emissions. Therefore, new solutions for clean combustion have to be found. Low Temperature Combustion is a promising technology in this regard, as it is able to reduce pollutant emissions while increasing the engine's efficiency. Recent research has shown that closed-loop control manages to stabilize the process. Nevertheless, sensitivity to varying boundary conditions and a narrow operating range remain unfavorable. To investigate new control concepts such as in-cycle feedback, computationally feasible cycle-resolved models become necessary. This work presents a low order model for Gasoline Controlled Auto Ignition (GCAI) that is continuous in time and computes the pressure trace over the entire combustion cycle. A comparison between simulation and measurement supports the suitability of the modeling approach. Furthermore, the model captures the characteristic transition of system dynamics in case GCAI during late combustion.

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“…Generally, detailed physical models are computationally too intensive for use in real-time engine applications and are linearized around a specific operating point. 27,28 For their use in real-time applications, it is necessary to relinearize the model for different operating points. A physics-based, zero-dimensional (0D) model is described in the first part of this article and is useful for determining the in-cylinder state during the entire gas exchange process.…”

Section: Introductionmentioning

confidence: 99%

Development and experimental validation of a real-time capable field programmable gate array–based gas exchange model for negative valve overlap

Gordon

Wouters

Wick

et al. 2018

International Journal of Engine Research

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Homogeneous charge compression ignition has the potential to significantly reduce NO x emissions, while maintaining a high fuel efficiency. Homogeneous charge compression ignition is characterized by compression-induced autoignition of a lean homogeneous air–fuel mixture. Combustion timing is highly dependent on the in-cylinder state including pressure, temperature and trapped mass. To control homogeneous charge compression ignition combustion, it is necessary to have an accurate representation of the gas exchange process. Currently, microprocessor-based engine control units require that the gas exchange process is linearized around a desired operating point to simplify the model for real-time implementation. This reduces the models’ ability to handle disturbances and limits the flexibility of the model. However, using a field programmable gate array, a detailed simulation of the physical gas exchange process can be implemented in real time. This paper outlines the process of converting physical governing equations to an offline zero-dimensional gas exchange model. The process used to convert this model to a field programmable gate array capable model is described. This model is experimentally validated using a single cylinder research engine with electromagnetic valves to record real-time field programmable gate array gas exchange results and comparing to the offline zero-dimensional physical model. The field programmable gate array model is able to accurately calculate the cylinder temperature and cylinder mass at 0.1 °CA intervals during the gas exchange process for a range of negative valve overlaps, boost conditions and engine speeds making the model useful for future real-time control applications.

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Model Predictive Control for Combustion Timing and Load Control in HCCI Engines

Cited by 23 publications

References 53 publications

Control oriented modeling and analysis of gas exchange and combustion processes for LTC diesel engine

Control oriented modeling and analysis of gas exchange and combustion processes for LTC diesel engine

Reduced Order Modeling for Multi-scale Control of Low Temperature Combustion Engines

Development and experimental validation of a real-time capable field programmable gate array–based gas exchange model for negative valve overlap

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