気筒

1. Origins, structure, and basic meaning

• Structure: 気筒 (きとう) combines gas 気 and tube 筒 to denote an engine cylinder.
• Basic usage: It is shown in maintenance layouts and counted in models reproducing a four-cylinder engine.

2. Common pitfalls and similar expressions

• Cylinder count does not determine all performance
  • 四気筒 states that the engine has four cylinders, not its displacement, power, or condition.