Cylinder-specific model-based control of combustion phasing for multiple-cylinder diesel engines operating with high dilution and boost levels

Sui, Wenbo; Hall, Carrie M.; Kapadia, Gina

doi:10.1177/1468087418804087

Cited by 4 publications

(2 citation statements)

References 32 publications

(91 reference statements)

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“…Further, to validate the model against experimental data, the volumetric efficiency of the model shall be calibrated in accordance with production engine for the whole operating range of the engine. Using the expressions described in (11) and (12), the volumetric efficiency slopes and offset respectively for various stored values of gas mass injected into the cylinder and the gas pressures within the cylinder is shown in Figure 19…”

Section: Experimental Setup and Proceduresmentioning

confidence: 99%

“…Continuing the development work to solve higher order dynamic airpath models and to control airpath variables, there are various non-RT nonlinear control techniques proposed. 6–11 Adapting these models onto a processor for RT calculations with high accuracy and stability for large uncertainty is still challenging as measured values of the thermodynamic properties are used for airpath control in ECU models.…”

Section: Introductionmentioning

confidence: 99%

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Development and validation of nonlinear dynamic engine airpath models for real-time advanced control application

Kamath

Kopold²,

Venkobarao³

et al. 2021

International Journal of Engine Research

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This paper proposes model reduction techniques for reducing engine airpath models in real-time (RT), for a control oriented application in an engine equipped with high pressure exhaust gas recirculation (EGR-HP) and single stage turbocharger. There are two major challenges addressed by authors: First, reducing the order without compromising the performance in terms of accuracy by decoupling the nonlinear coupled differential equations of airpath system in-order to use them in real-time processor-in-loop control application. A model reduction technique based on different dynamic characteristics between thermodynamic states followed by semi-implicit Euler (SIE) numerical method to solve coupled dynamic multi-input multi-output (MIMO) differential equation models is demonstrated. Second, the authors have proposed a novel method to calculate gas mass flow via compressor, coupled with engine airpath model in real-time. The proposed models of airpath system coupled with turbocharger models for a diesel engine is validated with experimental data to evaluate performance of pressures, temperatures, mass flows at relevant components. The developed airpath model is used for calculating thermodynamic properties in real-time for state of art engine control unit (ECU) in production engine and become basis for feedforward as well as closed loop control of airpath variables for real-time system. Authors further propose to use this modeling approach for calculating airpath system variables for exhaust aftertreatment system, injection system, and for virtualization of sensor values in airpath systems.

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Section: Experimental Setup and Proceduresmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Development and validation of nonlinear dynamic engine airpath models for real-time advanced control application

Kamath

Kopold²,

Venkobarao³

et al. 2021

International Journal of Engine Research

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Real-time predictive model for reactivity controlled compression ignition marine engines

Storm,

Vasudev,

Shamekhi

et al. 2023

Control Engineering Practice

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Effect of Fuel Injection Strategies on Performance, Regulated and Unregulated Emissions of a Gasoline Compression Ignition Engine

Krishnamoorthi,

Singh,

Agarwal

2024

ASME Open Journal of Engineering

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Gasoline compression ignition (GCI) mode engines are characterized by partially premixed charge combustion, leading to significant and simultaneous reductions of nitrogen oxides and particulate matter emissions. However, gasoline compression ignition engine operation suffers from a limited operating window. Air preheating and low-research octane number fuels are required to improve the engine performance. This experimental study used a blend of 70% (v/v) gasoline and 30% diesel as test fuel in a direct injection medium-duty compression ignition engine. Experiments were carried out at 5- and 10-bar brake mean effective pressure (BMEP) engine loads at 1500–2500 rpm engine speeds using a triple injection strategy (two pilots and one main injection) for all test conditions. The combustion phasing was kept constant with respect to crank angle to produce a high power output. The investigations examined engine performance and regulated and unregulated emissions. The test engine was initially operated in conventional diesel combustion mode with diesel for baseline data generation. Gasoline compression ignition mode operation demonstrated a remarkable 16% increase in the brake thermal efficiency and a substantial reduction of 65% in nitrogen oxide emissions compared to the baseline conventional diesel combustion mode. The GCI engine exhaust showed higher concentrations of regulated emissions, namely hydrocarbons and carbon monoxide, and unregulated trace emissions, such as methane, acetylene, toluene, inorganic gaseous species, and unsaturated hydrocarbons.

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Cylinder-specific model-based control of combustion phasing for multiple-cylinder diesel engines operating with high dilution and boost levels

Cited by 4 publications

References 32 publications

Development and validation of nonlinear dynamic engine airpath models for real-time advanced control application

Development and validation of nonlinear dynamic engine airpath models for real-time advanced control application

Real-time predictive model for reactivity controlled compression ignition marine engines

Effect of Fuel Injection Strategies on Performance, Regulated and Unregulated Emissions of a Gasoline Compression Ignition Engine

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