How does combustion chamber size affect compression?

Combustion chamber volume is a key factor that determines the Compression Ratio. For example, a smaller chamber will create a higher compression ratio.

What are the characteristics of a good combustion chamber?

1 Basic Requirements of a Good Combustion Chamber. The three main requirements of a SI engine combustion chamber are high power output with minimum octane requirement, high thermal efficiency, and smooth engine operation.

What is the most efficient combustion chamber?

So, the pentroof combustion chamber has excellent airflow, maximum intake and exhaust capacity, and minimal heat loss. This combination makes it the most efficient of the five types of combustion chambers.

Which shape is mostly used for combustion chamber of SI engines?

This I-Head type combustion chamber is also called as the overhead valve combustion chamber. As you can see the inlet and the exhaust valves are located on the top of the cylinder head. The main advantage of this combustion chamber is that it can achieve high compression ratios, and also less tendency to the knock.

Why does engine combustion chamber design vary?

Combustion chamber design is an important factor in an engine’s particulate emission. This turbulence varies with the speed of the engine, capacity and nature of inducted charge, (we could say that the strength of this turbulence-based impingement barrier varies according to speed/load).

What are the advantages of a wedge combustion chamber?

Less turbulence is generated in this type, so heat loss is less and thus, Excess air required is more, so engine size increases, and thermal efficiency also increases, starting is easier. This combustion chamber is most beneficial for high capacity and low speed engines.

What does the combustion chamber do?

A Combustion Chamber is the area within the Cylinder where the fuel/air mix is ignited. As the Piston compresses the fuel/air mix and makes contact with the Spark Plug, the mixture is combusted and pushed out of the Combustion Chamber in the form of energy.