Combustion chamber
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A combustion chamber is part of an internal combustion engine in which the fuel/air mix is burned. For steam engines, the term has also been used for an extension of the firebox which is used to allow
OHC engine combustion chamber, located between the piston (shown in yellow) and the valves (blue and red)
Dished piston for a diesel engine
Cylinder head
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In a piston engine, the cylinder head sits above the cylinders, forming the roof of the combustion chamber. In sidevalve engines the head is a simple plate of metal containing the spark plugs and poss
Combustion chamber
…is converted into mechanical energy. In spark ignition engines, such as petrol (gasoline) engines, the combustion chamber is usually located in the cylinder head. The engines are often designed such that the bottom of combustion chamber is roughly in line with the top of the engine block. Modern engines with…
Side view of a DOHC cylinder head (with the valves and camshafts installed)
Underside of a OHV cylinder head (with the valves installed)
DOHC head- cutaway view
SOHC Honda D15A3 engine