Question

What is diesel engine compression ratio

Answer 1

15 to 20 for diesel engine compression ratio

Answer 2

The compression ratio of diesel engines is between 18:1 to 23:1.

Compression ratio is defined as the ratio of complete volume of the combustion chamber to that of the volume left after complete compression.

Diesel engine have a higher Compression ratio as compared to the petrol engine and that is the reason why diesel engines are fuel efficient.

High compression ratio is required in diesel engines because they are devoid of any spark plug and solely depend upon the compression pressure for combustion of fuel.

These provide high power output.