Question

Consider the following statements:

Combustion chamber is

1. the volume between TDC and BDC during the combustion process

2. the space enclosed between the upper part of the cylinder and the top of the piston during the combustion process

3. the space enclosed between TDC and the top of the piston during the combustion process

Which of the above statements is/are CORRECT?

1. 1 only
2. 2 only
3. 3 only
4. 1, 2 and 3

Answer 1

Correct Answer - Option 2 : 2 only

Concept:

• T.D.C. (Top dead centre): It is the position of the piston at the top of a cylinder, where the piston changes its direction of motion from the top to the bottom
• B.D.C. (Bottom dead centre): It is the position of the piston at the bottom of the cylinder where the piston changes its direction of motion from the bottom to the top

• The volume between TDC and BDC is known as Swept Volume.
• The space enclosed between TDC and the upper part of the cylinder during the combustion process is known as clearance volume.

Explanation:

• A combustion chamber is that part of an internal combustion engine or a reaction engine in which the fuel/air mixture is burned.
• It is the space between the upper part of the cylinder and the top of the piston during the combustion process.