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Model Predictive Control of an Air Path System for Multi-Mode Operation in a Diesel Engine

Garrett Advancing Motion-Paul Dickinson, Jaroslav Pekar, MinSeok Ko
Hyundai Motor Group-Buomsik Shin, Yohan Chi, Minsu Kim
  • Technical Paper
  • 2020-01-0269
To be published on 2020-04-14 by SAE International in United States
A supervisory Model Predictive Control (MPC) approach is developed for an air path system for multi-mode operation in a diesel engine. MPC is a control method based on a predictive dynamic model of system and determines actuator control positions through the optimization of various factors such as tracking performances of target setpoints, moving speed of actuators, limits, etc. Previously, linear MPC has been successfully applied on the air path control problem of a diesel engine, however, most of these applications were developed for a single operation mode which has only one set of control target setpoint values. In reality, a single operation mode cannot cover all requirements of current diesel engines and this complicates practical implementations of linear MPC. The high priority targets for the development of diesel engines are low emissions, high thermal efficiency and robustness. These objectives require multi-mode operations such as a HP EGR (High pressure exhaust gas recirculation) mode in cold coolant condition, a Double EGR mode for sufficient EGR rates, a Diesel Particulate Filter (DPF) regeneration mode for the heat-up…
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A Study of Combustion Control Parameter Optimization in a Diesel Engine Using Cylinder Pressure

Hyundai Motor Co.-Buomsik Shin, Insoo Jung, Soonchan Pyo, Yohan Chi
Published 2014-04-01 by SAE International in United States
In diesel engine development, fuel consumption, emissions and combustion noise have been main development objectives for fuel economy, low emissions and NVH. These main objectives can be achieved with advanced engine technologies. As electronic actuating systems are widely applied on diesel engines, elaborate control is required. This is because the main development targets are greatly affected by engine control parameters but frequently have a trade-off relationship. Therefore, the optimization of combustion control parameters is one of the most challenging tasks for improvement. As an efficient method, the DOE methodology has been used in engine calibration. In order to develop a mathematical model, the input and output values must be measured. Unlike other variables, combustion noise has been continually reported to have better indication method in simplified way. In this paper, advanced noise index from cylinder pressure signal is applied on engine test. Its interactive relationship with fuel economy and emissions is explored and analyzed. The sensitivity of fuel consumption and emissions to combustion noise is quantified in a 1.6 passenger diesel engine. This analysis also…
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Technologies for Improved Emission Potential in a Small Displacement Volume Passenger Diesel Engine

Hyundai Kia Motor R&D Division-Buomsik Shin, Haengpyo Heo, Hyeungwoo Lee, Yohan Chi
Published 2009-04-20 by SAE International in United States
Diesel engine has been attractive for its high thermal efficiency with the large penetration into the passenger car. Main progress of diesel engine is in the emission control and performance potential. New technologies are introduced to cope with the requirement toward cleaner engine. Although new technologies are effective in emission reduction, their application should be approached carefully because they have both positive and negative effect on fuel economy and cost. Therefore, it is important to understand the characteristics of the individual technology and optimize efficiently. It is more required in the small displacement engine. In this paper, several technologies are presented and their characteristic behaviors are investigated for a small displacement volume passenger diesel engine. Thereby, emission potential is improved to comply with upcoming emission standards.
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