Low pressure EGR control for a turbocharged diesel HCCI engine

Youssef, Bilal; Solliec, G. Le; Corde, Gilles; Hayat, Olivier; Jabeur, Christophe; Calendini, Pierre Olivier

doi:10.1109/cca.2009.5281165

Cited by 4 publications

(6 citation statements)

References 13 publications

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“…An exhaust valve is placed downstream of where the LPEGR intercepts the exhaust system to maintain enough upstream LPEGR loop pressure to allow for adequate flow. Similar LPEGR exhaust valve setups have been used to control LPEGR flow in HCCI engines in [48] with the use of observers similar to those formed for air-path control in [32]. For this work the exhaust valve opening is left constant to focus on controlling intake conditions with the use of dual-loop EGR and VGT.…”

Section: Dual-loop Exhaust Gas Recirculationmentioning

confidence: 99%

“…This can be seen in Figure 6 which shows the GT-Power simulation of LPEGR mass flow rate as a function of the valve angle. to estimate conditions upstream of EGR valves can be seen in [17], [40], and [48]. In general, identifying system dynamics consists of several steps needed in both pre-processing data and validation.…”

Section: Gt-power Complex Air-path Simulationmentioning

confidence: 99%

“…Feed-forward control of the VGT follows the steady-state inversion of Equations (1), (2), and (3) where a desired intake pressure, P d , must correspond to a desired pressure of section 4, , through Equation (48).…”

Section: Feed-forward Vgt Controlmentioning

confidence: 99%

“…Efficiency maps were created as a function of VGT position, HPEGR valve position, and fuel injection command and used in conjunction with the feed-forward controller. Equations (48) and…”

Section: Feed-forward Vgt Controlmentioning

confidence: 99%

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Robust Control Approach on Diesel Engines With Dual-Loop Exhaust Gas Recirculation Systems

Haber

Wang

2010

ASME 2010 Dynamic Systems and Control Conference, Volume 1

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This paper presents a robust control approach to achieve an independent control authority over the intake manifold conditions of a medium-duty, V8, Diesel engine with the use of a complex air-path system. The intake manifold conditions in question include gas temperature, pressure, and oxygen mass fraction. The purpose of achieving such a high control authority over these intake manifold conditions is to explore the possibilities of extending the operating ranges of advanced combustion modes like low temperature diffusion combustion (LTDC), homogenous charge compression ignition (HCCI), and pre-mixed charge compression ignition (PCCI). Independent control of these air-path variables is made possible by using a dual-loop exhaust gas recirculation (EGR) system with a two-stage, variable geometry turbocharging (VGT) system. A multi-input-multi-output robust air-path controller was designed based on a control-oriented model identified using a high-fidelity GT-Power model of a medium-duty Diesel engine. Simulation results illustrate the effectiveness of the controller over a limited engine operating range.

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Section: Dual-loop Exhaust Gas Recirculationmentioning

confidence: 99%

Section: Gt-power Complex Air-path Simulationmentioning

confidence: 99%

Section: Feed-forward Vgt Controlmentioning

confidence: 99%

“…Efficiency maps were created as a function of VGT position, HPEGR valve position, and fuel injection command and used in conjunction with the feed-forward controller. Equations (48) and…”

Section: Feed-forward Vgt Controlmentioning

confidence: 99%

See 2 more Smart Citations

Robust Control Approach on Diesel Engines With Dual-Loop Exhaust Gas Recirculation Systems

Haber

Wang

2010

ASME 2010 Dynamic Systems and Control Conference, Volume 1

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“…On the contrary, LP-EGR has not been deployed in series engines until recently and limited research has been conducted in this topic, and particularly about LP-EGR control [16]. This paper compares the two systems and analyses the advantages and disadvantages of the LP-EGR system from the control point of view.…”

Section: Introductionmentioning

confidence: 99%

Considerations on the low-pressure exhaust gas recirculation system control in turbocharged diesel engines

Luján

Guardiola

Plá

et al. 2013

International Journal of Engine Research

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Although high pressure exhaust gas recirculation has been commonly used in turbocharged diesel engines for controlling the NOx formation, recent advances in after-treatment and material technology make possible using a low pressure architecture, which recirculates the exhaust gas upstream the compressor. This brief paper presents a basic study of control aspect related to the low pressure architecture, emphasising the similarities and differences with the high pressure system. Data coming from experimental tests with both configurations, and from a one-dimensional wave action model simulations, are combined for the analysis of the input-output paring, linearity and the transient performance of both systems.

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Multivariable diesel low-pressure EGR controller designed by input-output linearization

Brewbaker

2015

2015 American Control Conference (ACC)

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Low pressure EGR control for a turbocharged diesel HCCI engine

Cited by 4 publications

References 13 publications

Robust Control Approach on Diesel Engines With Dual-Loop Exhaust Gas Recirculation Systems

Robust Control Approach on Diesel Engines With Dual-Loop Exhaust Gas Recirculation Systems

Considerations on the low-pressure exhaust gas recirculation system control in turbocharged diesel engines

Multivariable diesel low-pressure EGR controller designed by input-output linearization

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