Engines

Question 1

State the range of engine revolutions at which the following diesel engines run.

Answer 1

(i) a slow speed engine 150 rpm

Iii) a medium speed engine 350 – 650 rpm

(iii)a high speed diesel engine 900 – 1200 rpm

Question 2

What are the advantages of a slow speed diesel engine?

Answer 2

1. Good at developing ahead power
2. Connected directly to prop shaft – no need for gear box, easier maintenance and

3.Cheaper to build

4.Cheaper to run as they burn heavy fuel oil