Diesel/Gasoline Engines

Question 1

What are the main applications of diesel engines in naval ships?

Answer 1

Propulsion for ships, submarines (not US), and emergency power generators.

Question 2

During which stroke of a four-stroke diesel engine is air drawn into the cylinder?

Answer 2

Intake stroke.

Question 3

What is the main advantage of a two-stroke diesel engine compared to a four-stroke diesel engine?

Answer 3

Higher power to weight ratio and less complicated valve train.

Question 4

What are the three basic components of a gas turbine engine?

Answer 4

Compressor, Combustion Chamber, Turbine.

Question 5

What is the primary purpose of the compressor in a gas turbine engine?

Answer 5

To draw in air and compress it for the combustion process.

Question 6

What is the primary advantage of the LM 2500 gas turbine engine used in DDGs and CGs?

Answer 6

It is compact, light, easy to maintain and repair, and has a quick start time (~1 minute).

Question 7

What are the types of combustion chambers used in gas turbine engines?

Answer 7

Can, Annular, Can-annular.

Question 8

What are the four stages of a four-stroke diesel engine?

Answer 8

1. Intake
2. Compression
3. Combustion (Power)
4. Exhaust