Cylinder Head - Cylinder head mountings, Function and Combustion chamber shape.

Cylinder head or cylinder cover houses various fixtures called cylinder head mountings. They are positioned and designed very carefully, as they are subjected to very high combustion pressures, and temperatures. Cylinder head mountings and functions  are explained below in a brief sense.

Functions of cylinder head:

1. Forms a part of the combustion space- Cylinder head covers the top part of liner thus providing a space for combustion to take place. The shape of the cylinder head will greatly influence the combustion space shape, and thus characterstics and peak pressures developed in the engine. The efficiency of swirl and injection  also depends on the Shape of this space.the three main Combustion chamber designs are Hemispherical pent roof, Bath tub and Wedge.

2. Cylinder head mountings- It houses various running parts like Exhaust/inlet valves, Fuel injectors,  Relief valve,  Air starting valve, Rocker arm, indicator cock, cooling water and fuel connections etc.