@Dr-Sassi

Hello,

I’ve had a look at the scenes, and they really help me a lot to improve the issues in my scene.

Thank you very much for that, and for taking the time to do this!

Kind regards,
Marijke

@Dr-Sassi

Hello,

that’s no problem at all! I’m just happy that someone is helping me.

Best regards,
Marijke

@Dr-Sassi

Hello,

All right, here is a Dropbox folder with the scene:
https://www.dropbox.com/scl/fo/j4k2tvxwtd5pbs4wca9f6/AMYCrdkTHRA_GBEAzcISjNE?rlkey=z7uk27bn84yfy53ti5kzzepih&st=9fknrmfg&dl=0

Thank you and best regards,
Marijke

@Dr-Sassi

Hello,

I’m so grateful that you’re helping me!

At the moment, the plan is to cut the engine at certain points to provide a view into the interior. However, making parts of it transparent also sounds like a very good idea. I’ll experiment a bit and see what looks better.

Rendering the four strokes separately also sounds like a reasonable approach to me. Getting everything to work together convincingly all at once will probably be much more difficult.

Thanks again for the links and the C4D file, and best regards,
Marijke

@Dr-Sassi

Hello,

thank you very much for your response!

It's a Horch 8 Fiedler straight-eight engine.

At the moment I’m doing everything with Pyro.
There is a particle system for the fresh gas as it flows through the intake pipe. This is currently animated using a spline and a field force.
The next particle system is an emitter that blows fresh air into the chamber as soon as the fresh gas from the previous particle system arrives there (which I can’t figure out, since the smoke always stops moving at a certain point).
The next particle system is the explosion inside the chamber.
After that, there is a particle system that imitates the extraction of the burned residues. The emitter is placed directly at the outlet of the chamber and “blows” into the exhaust pipe. The smoke then follows a spline again, animated with a field force.
And then there is another emitter at the exhaust.

The timing of when everything starts is all animated manually with keyframes.

Overall, it simply doesn’t look good yet, and many elements don’t fit together convincingly.
I’m also missing a proper transition between the explosion inside the chamber and the extraction of the residues. I had the idea of animating the color of the fresh-gas emitter, but it doesn’t change smoothly. Instead, it switches abruptly within a single frame.

It’s probably all far too complicated on my side.

Is there a way for me to send you the scene?

Nevertheless, I really appreciate your help and best regards,
Marijke

Hello everyone!

I’m currently trying to animate the combustion process of an inline eight-cylinder engine using Pyro in Cinema 4D.

Fresh air is drawn through a pipe into the chamber, where it is compressed by the piston and ignited. The exhaust gases are then pulled out through the exhaust pipe and released to the outside.

I’ve been working on this for quite a while now, but I just can’t seem to get the fresh air and exhaust gases to flow smoothly through the pipes, or to clearly show the combustion happening inside the cylinder. In other words, how the fresh air turns into exhaust gas.

Does anyone have any tips on how I could achieve this?

Unfortunately, my scene file is too large to attach here, but perhaps it can be solved without it or I can provide the scene another way if needed.

Best regards,
Marijke