Fuel and Combustion

Fuel and Combustion

Developing a Control Oriented Model for Predicting Combustion Timing in HCCI Engines

Authors
Sasan AkbarPour 1
Rahim Khoshbakhti Saray 2
Mehdi Mirzaei 1
Vahid Mohammadi 1
Ghasem soleimani 1
1 Faculty of Mechanical Engineering, Sahand University of Technology, Tabriz, Iran
2 Faculty of Mechanical Engineering, Sahand University of Technology, Tabriz, , Iran
Abstract

One of the main challenges in HCCI engines is lack of suitable control system as exists in conventional internal combustion engines. Therefore, controlling HCCI combustion can improve the commercial application of these types of engine. In this study a control oriented model (COM) that can predict SOC, BD, and CA50hasbeen developed. The validity of the model has been verified by comparing the predicted pressure traces with the corresponding experimental data, resulted from analysis of in-cylinder pressure data, in a wide range of operating conditions. Then, various amounts of intake temperature, intake pressure, and equivalence ratio in HCCI engine in the developed model have been implemented. These data are used to optimize coefficients in Modified Knock Integral Model (MKIM) correlation, and other correlations for predicting combustion parameters. One of the advantages of this COM is easy access to inlet parameters.
Keywords
HCCI engine
Control Oriented Model
Start of Combustion
Burn Duration
CA50
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