The combustion chamber is a kind of combustion equipment made of high temperature resistant alloy material. After the piston reaches top dead center, the space between the top of the piston and the cylinder head is where fuel is burned.
When the piston is at top dead center, the space formed above the top surface of the piston and below the bottom surface of the cylinder head is called the combustion chamber. The bottom surface of the cylinder head of the gasoline engine is usually cast with different shapes of pits, which are traditionally called combustion chambers.
There are four conservation equations in combustion physics, namely total mass conservation, momentum conservation, energy conservation and component conservation equations