Engine Modeling With Inlet and Exhaust Wave Action for Real Time Control

A motorcycle engine model in MATLAB/SIMULINK is introduced in this paper for engine design and control system design. It simulates a 125 cc single cylinder four-stroke spark ignition engine. Sub-models include: inlet/exhaust, combustion, heat transfer, friction, and work done. The method of characteristics is used for calculating the inlet and exhaust flow. Simulated results of bmep, imep, fmep, heat release rate, inlet/exhaust pressure, and cylinder pressure were compared with the experimental data. It was found that satisfactory simulation results were achieved for the proposed model.© 2003 ASME