In diesel engines, variable geometry turbocharger (VGT) and exhaust gas recirculation (EGR) systems are used to increase engine specific power and reduce NOx emissions, respectively. Because the dynamics of both the VGT and EGR are highly nonlinear and coupled to each other, better performance may be attained by substituting nonlinear multiple input, multiple output (MIMO) controllers for the existing conventional lookup table-based linear controllers. This paper presents a coordinated VGT/EGR control system for common-rail direct injection diesel engines. The objective of the control system is to track target mass air flow and target intake manifold pressure by adjusting the EGR and VGT actuator positions. We designed a nonlinear MIMO control system using a neural control scheme that adopts an indirect adaptive control approach. The neural control system is comprised of a neural network identifier, which mimics the target air system, and a neural network controller, which calculates the actuator positions. The proposed control system has been validated with engine experiments under transient operating conditions. It was demonstrated from experimental results that the proposed control system shows improved target value tracking performance over conventional VGT/EGR control system.
VGT and EGR Control of Common-Rail Diesel Engines Using an Artificial Neural Network
Contributed by the IC Engine Division of ASME for publication in the JOURNAL OF ENGINEERING FOR GAS TURBINES AND POWER. Manuscript received February 29, 2012; final manuscript received August 6, 2012; published online November 21, 2012. Assoc. Editor: Christopher J. Rutland.
- Views Icon Views
- Share Icon Share
- Cite Icon Cite
- Search Site
Oh, B., Lee, M., Park, Y., Sohn, J., Won, J., and Sunwoo, M. (November 21, 2012). "VGT and EGR Control of Common-Rail Diesel Engines Using an Artificial Neural Network." ASME. J. Eng. Gas Turbines Power. January 2013; 135(1): 012801. https://doi.org/10.1115/1.4007541
Download citation file:
- Ris (Zotero)
- Reference Manager