Why internal combustion engines can never reach perfect efficiency
In short: Understanding the Otto cycle is the key to grasping how modern engines convert heat into motion. This video breaks down the physics of internal combustion, moving from theoretical ideals to the practical realities of mechanical engineering.
The footage examines how the Otto cycle functions through four separate stages: heat is added and released at fixed volumes, alongside paired expansion and compression periods. By utilizing PV and TS diagrams, it clarifies how these stages dictate engine performance.
A core focus is the distinction between ideal and real engines. It provides a step-by-step derivation of efficiency, demonstrating how it is fundamentally tied to the compression ratio and why achieving one hundred percent efficiency is physically impossible.
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Sources
- Summary by Intellect · source: Otto Cycle Best Explanation Ever
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