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Simulating an Entire Car Engine (yes, it makes noise)

Simulating an Entire Car Engine (yes, it makes noise)

AngeTheGreat
4 HN recommenders · discussed 2023–2025
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About this video

AngeTheGreat describes building a physically realistic internal combustion engine simulator in C++, drawing on fluid dynamics, physics and chemistry. It generates procedural audio for engines such as a V8.

Why it appears in the archive

HN points to it as a standout example of physics-based sound synthesis and engine simulation.

AI-generated summary and labels from the source dataset; verify important details against the video. Source & credits.

From the Hacker News discussion

mhink · 2025-07 · strong rec

> Interestingly, while the engine has the most moving parts in real life, in code, it's the simplest piece of the entire car simulation. Because at its core, the engine is just a torque calculator. It's concerned with producing a single output: rotational torque, from a set of inputs. It is essentially a blackbox. This just reminded me of AngeTheGreat's incredible video series showing his engine simulator- absolutely worth checking out, considering it's optimized enough to run in real-time! The fact that he's simulating it well enough to generate realistic sound is absolutely mind-blowing. [VIDEO]

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Fr0styMatt88 · 2023-01 · rec

Or combine it with that engine noise generator that uses a full physical simulation: [VIDEO] That would be pretty sweet! I’m guessing with the ECU sensors you could do away with much of the sim parts.

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pengaru · 2023-12 · rec

You might find this software interesting: [VIDEO] I don't know if any of the state of the art flight/driving simulators are doing this kind of engine noise synthesis already, but they should be.

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modeless · 2025-05 · rec

Love physics based audio! Using the GPU is a great idea. Another physical audio simulation I like is the engine sound simulator made by AngeTheGreat: [VIDEO]

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blahburn · 2024-01 · reference

Would love to play around with this and hear the differences in sound. Something like what this guy did with the engine simulator [VIDEO]

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