Kage no Jitsuryokusha ni Naritakute! - Ch. 66.2

[E421T]

I realised I forgot everything that happened in V6...

So, basically, very simplified, what happens in the V6 is that a Mixture of Fuel and Air is combusted by igniting it with a spark plug, the pressure from this reaction pushing out the piston.
The kinetic energy of the piston is transferred to the engine shaft, which is connected to the transmission.

 

[breizh]

He's so right. Apple juice is peak.

 

[Naeko]

Those poor friends, poor in spirit and finances.

They are lucky to not be stripped of their nobility for what they've done. When they forged Cid's signature (to enter the contest), that was forging the signature of another noble.