Control of a dual-loop exhaust gas recirculation system for a turbocharged Diesel engine

Chen, Shuangwu; Yan, Fengjun

doi:10.1007/s12239-015-0074-6

Cited by 8 publications

(4 citation statements)

References 13 publications

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“…If the heat transfer between the mixture and the pipe walls is neglected, and the energy or mass conservation law and the ideal-gas law are applied, 8,16 the intake manifold conditions dynamics are derived as…”

Section: System Modellingmentioning

confidence: 99%

“…With a variable-geometry turbocharger (VGT) (as shown in Figure 1), a dual-loop exhaust gas recirculation (EGR) system 6–8 has been extensively focused on in recent years. It provides a flexible and also complex control architecture which has been commonly utilized in modern engines to achieve the desired intake manifold conditions and also the in-cylinder conditions.…”

Section: Introductionmentioning

confidence: 99%

“…For a diesel engine with a dual-loop EGR and VGT system, a generic model-based control structure was described by Grondin et al 9 On the basis of the reference governor concept, air-path and fuel-path coordinated control was designed by Yan and Wang. 10 A linear quadratic regulator with a feedforward loop was introduced by Chen and Yan 8 for simultaneous control of the intake manifold temperature, the pressure and the burned gas fraction with a lower overshoot and a shorter settling time. By combining the reference governor technique and feedforward control, an adjustable-priorities control algorithm which targets the air-path system was demonstrated by Zeng and Wang.…”

Section: Introductionmentioning

confidence: 99%

“…In addition to this, the volumetric efficiency, which is the key parameter for calculating the inhaled gas mass and the orifice equation is the essential model for the mass flow through the valves, cannot be measured or calibrated accurately. The modelling error combined with the high coupling effects between the three loops (the temperature, the pressure and the oxygen concentration) are the reason why many control techniques require feedforward loops 7,8 or look-up tables. 9…”

Section: Introductionmentioning

confidence: 99%

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Decoupled disturbance rejection control for a turbocharged engine with a dual-loop exhaust gas recirculation system

Chen

Yan

2017

Proceedings of the Institution of Mechanical Engineers, Part D:

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Dual-loop exhaust gas recirculation with a variable-geometry turbocharger is an effective architecture for achieving desired intake manifold conditions, such as the temperature, the pressure and the oxygen concentration of the intake manifold, which have critical roles in advanced combustion mode control. However, the widely used control-oriented model is derived on the basis that the heat transfer between the pipes and the gas is negligible, which means that it suffers from non-trivial errors. Simulation results show that other error sources, including the volumetric efficiency and the orifice equation, are difficult to calibrate accurately and also cause significant errors in the system, particularly in transient situations. Modified active disturbance rejection control with an extended state observer is utilized to deal with the non-linear, multiple-input multiple-output system in this paper. It is demonstrated that the performance of active disturbance rejection control mainly depends on the performance of the extended state observer. In this paper, an extended state observer, which is based on the sliding-mode concept rather than the conventional linear observer, is introduced. By taking advantage of its strong robustness, the system is decoupled into three loops. For each loop, the internal errors and the external errors, including the modelling error and the coupling effects, are lumped into one term; they are then actively estimated and cancelled out by the control input in real time. The proposed method was validated using calibrated GT-Power model simulations.

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Section: System Modellingmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%