In Cylinder Video ( How a 4 stroke engine works )

It's animation you morons

This is amazing!

how the hell did they get this footage...

They built a giant engine so a guy could go in there and film it.

mounted a camera in the head of an engine.

I realize that, but how though... and is it in the engine or looking through a window port?? I cant see it being mounted like inside the cylinder, not with the pressures and temperature involved...

2 stroke

hihihi hahaha 2 strokes :-)))) with vlaves :-))) go back to school

Overlap helps with breathing. What happens is that at the top of the exhaust stroke, both valves are open concurrently. The exhaust flowing out of the exhaust port creates a vacuum in the cylinder which pulls fresh air/fuel in. The exhaust valve then closes as the piston starts to move down, the intake valve opens further, and the moving piston maintains and increases that vacuum pulling in the A/F mix.

i din see the overlapping period...
it seems like it cut...
anyway,it's a very great vid..
thanks a lot.