The diesel engine also known as a compression-ignition or CI engine, is an internal combustion engine in which ignition of the fuel is done which is injected into the combustion chamber and it’s compression ratio (CR) is _______.
1
4 to 6 : 1
2
8 to 14 : 2
3
9 to 11 : 1
4
14:1 to 22 : 1
5
22 : 1 to 28 : 1