![]() ![]() An original algorithm has been developed to run the model at a computational speed comparable with real time even with a resolution of 1 degree CA for in-cylinder calculation. To this extent models of intake and exhaust valves and of in-cylinder processes have been built up (where combustion process is described following a classic single-zone approach based on a proper Heat Release Rate, HRR). Due to the enhancing requirements in engine control functions, the Library has been recently improved to allow for “crank-angle” simulation of the engine. The tool has been initially developed to build up Mean Value Models (MVMs) of automotive engines for “real-time” simulations, and in that version has been used in several HiL applications. The paper describes the improvements introduced in the original Library set up by the authors in Simulink® for “control-oriented” simulation of Internal Combustion Engines (ICE) and powertrains. However, the increasing complexity of present engines and related management systems give rise to challenging issues in the development and applications of mathematical models. As widely documented in the open literature, design, validation, and testing of control systems take actually advantage of theoretical models to a great extent, due to their capabilities to reduce development time and costs. Management and diagnostic functions are playing a key role in the improvement of engines performance and in the reduction of fuel consumption and pollutant emissions especially in automotive applications. ![]()
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March 2023
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