A Study on Energetic Macroscopic Representation Modeling for Controlling Torque of Single Cylinder Engine with Natural Gas Fuel

Energetic Macroscopic Representation (EMR) has been developed for analyzing and controlling mechatronic systems since 2000. In recent years, EMR has been researched and applied by scientists in energy controlling hybrid vehicles. This paper is an initial study on building an energetic model of a single-cylinder engine using natural gas fuel, based on the principle of energy conservation and inverted control structure of the system. The aim of this paper is to control engine torque by controlling supplied fuel mass based on engine load characteristics. When analyzing the simulation results, there was still a delay in the control process, which was explained in this paper. Future research is expected to overcome the above issue. The obtained results provided a good basis to study the heat transfer to the emissions and the coolant water of the engine, including solutions to recover heat emissions.