Air-Path Control of a Heavy-Duty EGR-VGT Diesel Engine

Gelso, Esteban R.; Dahl, Johan

doi:10.1016/j.ifacol.2016.08.086

Cited by 17 publications

(8 citation statements)

References 9 publications

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“…It is difficult to verify (A2) a priori since obtaining a high-accuracy nonlinear model for the engine is extremely challenging. However, to support our assumption, we linearized (17) at each operating condition in the grid defined in (6) and observed that each linearized model was controllable. That is, we checked the controllability of…”

Section: Theorem 2 (Nominal Stability Of Smpc) Let the Following Assmentioning

confidence: 91%

“…The fuel-air ratio is computed using (13). The stage cost function l and prediction model f s are defined in (15) and (17) given below.…”

Section: Supervisory Controller Designmentioning

confidence: 99%

“…MPC also is capable of directly optimizing or constraining high-level/economic objectives such as emissions or fuel economy, these outputs are nonlinear and thus are usually addressed with NMPC. Controllers that maximize fuel economy subject to emissions constraints have been proposed for heavy duty diesels, 16,17 off-highway diesels, 18 and marine/generator diesels. 19 The associated simulation and experimental results are promising; however, these varieties of diesel engines are not subject to the same transient operating condition (speed/load) variations as automotive diesel engines.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Model predictive emissions control of a diesel engine airpath: Design and experimental evaluation

Liao‐McPherson

Huang

Kim

et al. 2020

Intl J Robust & Nonlinear

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This article presents the development and experimental validation of an emissions oriented model predictive controller for a diesel engine. The control objective is to minimize cumulative NOx and hydrocarbon emissions while limiting visible smoke production and without compromising fuel economy or torque response. This is accomplished by using a supervisory model predictive controller (SMPC) and nonlinear model predictive controller (NMPC) in tandem. The SMPC controller coordinates the exhaust gas recirculation (EGR) rate target and fuel supplied to the engine in real time to satisfy combustion quality constraints, while the NMPC controller tracks the EGR rate target by manipulating the EGR throttle, EGR valve, and variable geometry turbine. The NMPC controller uses MPC for feedforward and feedback in a novel configuration to simultaneously achieve fast tracking performance, disturbance rejection, and robustness. We demonstrate that the proposed diesel engine MPC controller is able to reduce cumulative emissions by 10% to 15% relative to a state of the art benchmark strategy when placed in closed loop with an engine on a transient dynamometer.

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Section: Theorem 2 (Nominal Stability Of Smpc) Let the Following Assmentioning

confidence: 91%

“…The fuel-air ratio is computed using (13). The stage cost function l and prediction model f s are defined in (15) and (17) given below.…”

Section: Supervisory Controller Designmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Model predictive emissions control of a diesel engine airpath: Design and experimental evaluation

Liao‐McPherson

Huang

Kim

et al. 2020

Intl J Robust & Nonlinear

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show abstract

“…However, MPC demands significantly more online computation which limits its production use. Linear MPC [30], experimentally validated in [4], uses 192 linear models and reports good tracking and constraint handling ability at 20 ms sampling time. The linear MPC in [26] uses 12 models and enforces constraints over average emission that are modelled in static maps.…”

Section: Introductionmentioning

confidence: 99%

Simultaneous control of NOx, soot and fuel economy of a diesel engine with dual-loop EGR and VNT using economic MPC

Liu

Dizqah

Herreros

et al. 2021

Control Engineering Practice

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“…Zamboni and Capobianco 22 experimentally studied the impacts of control strategies combining VGT with low-pressure (LP) and high-pressure (HP) EGR and achieved reductions of 2.1and 50% of fuel consumption and NO x . Moreover, Llamas and Eriksson 23 and Gelso and Dahl 24 optimized the EGR-VGT control of heavy-duty diesel engines during transients. Between the EGR and VGT, an essential aspect of the gas exchange regulation issue is a complex interaction.…”

Section: Introductionmentioning

confidence: 99%

Turbocharging strategy among variable geometry turbine, two-stage turbine, and asymmetric two-scroll turbine for energy and emission in diesel engines

Zhu

Sun

Zheng

2019

Proceedings of the Institution of Mechanical Engineers, Part A:

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Energy saving and emission reduction are very urgent for internal combustion engines. Turbocharging and exhaust gas recirculation technologies are very significant for emissions and fuel economy of internal combustion engines. Various after-treatment technologies in internal combustion engines have different requirements for exhaust gas recirculation rates. However, it is not clear how to choose turbocharging technologies for different exhaust gas recirculation requirements. This work has indicated the direction to the turbocharging strategy among the variable geometry, two-stage, and asymmetric twin-scroll turbocharging for different exhaust gas recirculation rates. In the paper, a test bench engine experiment was presented to validate the numerical models of the three diesel engines employed with the asymmetric twin-scroll turbine, two-stage turbine, and variable geometry turbine. On the basis of the numerical models, the turbocharging routes among the three turbocharging approaches under different requirements for EGR rates are studied, and the other significant performances of the three turbines were also discussed. The results show that there is an inflection point in the relative advantages of asymmetric, variable geometry, and two-stage turbocharged engines. At the full engine load, when the EGR rate is lower than 29%, the two-stage turbocharging technology has the best performances. However, when the exhaust gas recirculation rate is higher than 29%, the asymmetric twin-scroll turbocharging is the best choice and more appropriate for driving high exhaust gas recirculation rates. The work may offer guidelines to choose the most suitable turbocharging technology for engine engineers and manufacturers to achieve further improvements in engine energy and emissions.

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Air-Path Control of a Heavy-Duty EGR-VGT Diesel Engine

Cited by 17 publications

References 9 publications

Model predictive emissions control of a diesel engine airpath: Design and experimental evaluation

Model predictive emissions control of a diesel engine airpath: Design and experimental evaluation

Simultaneous control of NOx, soot and fuel economy of a diesel engine with dual-loop EGR and VNT using economic MPC

Turbocharging strategy among variable geometry turbine, two-stage turbine, and asymmetric two-scroll turbine for energy and emission in diesel engines

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