Establishment of a Real-Time Simulation of a Marine High-Pressure Common Rail System

Qinpeng Wang, Heming Yao, Yonghua Yu, Jianguo Yang and Yuhai He
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Qinpeng Wang: School of Energy and Power Engineering, Wuhan University of Technology, Wuhan 430063, China
Heming Yao: School of Energy and Power Engineering, Wuhan University of Technology, Wuhan 430063, China
Yonghua Yu: School of Energy and Power Engineering, Wuhan University of Technology, Wuhan 430063, China
Jianguo Yang: School of Energy and Power Engineering, Wuhan University of Technology, Wuhan 430063, China
Yuhai He: School of Energy and Power Engineering, Wuhan University of Technology, Wuhan 430063, China

Energies, 2021, vol. 14, issue 17, 1-17

Abstract: In this paper, the high-pressure common rail system of the marine diesel engine is taken as case study to establish a real-time simulation model of the high-pressure common rail system that can be used as the controlled object of the control system. On the premise of ensuring accuracy, the real-time simulation should also respond quickly to instructions issued by the control system. The development of the real-time simulation is based on the modular modeling method, and the high-pressure common rail system is divided into submodels, including the high-pressure oil pump, common rail tube, injector, and mass conversion. The submodels are built using the “surrogate model” method, which is mainly composed of MAP data and empirical formulas. The data used to establish the real-time simulation are not only from the empirical research into the high-pressure common rail system, but also from simulations of the high-pressure common rail system undertaken in AEMSim. The data obtained from this real-time simulation were compared with the experimental data to verify the model. The error in fuel injection quality is less than 5%, under different pressures and injection durations. In order to carry out dynamic verification, the PID control strategy, the model-based control strategy, and the established real-time simulation are all closed-loop tested. The results show that the developed real-time simulation can simulate the rail pressure wave caused by cyclic injection according to the control signal, and can feedback the control effect of different control strategies. Through verification, it is clear that the real-time simulation of the high-pressure common rail system can depict the rail pressure fluctuation caused by each cycle of fuel injection, while ensuring the accuracy and responsiveness of the simulation, which provides the ideal conditions for the study of a rail pressure control strategy.

Keywords: marine diesel engine; high-pressure common rail; real-time simulation model; closed-loop control (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2021
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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