Design of a computational tool for thermodynamic analysis of Otto type internal combustion engines
Santiago Valencia-Cañola- Carlos Andrés Bustamante-Chaverra
Published 2021-09-24
Keywords
- internal combustion engine,
- thermodynamic analysis,
- transient behavior,
- Otto cycle,
- Quarry
- heat transfer,
- dragged behavior,
- chamber pressure,
- thermal efficiency,
- Python ...More
How to Cite
Copyright (c) 2021 Revista UIS Ingenierías
This work is licensed under a Creative Commons Attribution-NoDerivatives 4.0 International License.
Abstract
A complete description of the thermodynamic behavior of an Otto cycle engine is obtained in terms of shaft rotation angle by a Python code. From results, indicators of high technical relevance are calculated, including effective pressure, specific break power, specific fuel consumption and volumetric efficiency. The proposed transient model solves transient mass and energy balances including compressible flow through the valves and combustion speed. The implemented code is validated by comparing numerical results with experimental measurements of an engine operating without combustion stage and at constant angular speed. By using the developed method, more conservative and realistic results are found for, among other indicators, thermal efficiency, volumetric efficiency and effective average pressure, and it is possible to predict the thermodynamic behavior of Otto cycle engines in an accurate and efficient way.
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References
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