Difference between 2 stroke and 4 stroke engine
| 2 Stroke diesel engine | 4 Stroke diesel engine |
| 1. 2 Stroke diesel engine is used for main propulsion purpose | 1. 4 Stroke diesel engine is used to produce electricity onboard ship. |
| 2. 2 stroke engine gives one power stroke in one revolution of crankshaft. | 2. 4 Stroke diesel engine gives one power stroke in two revolution of the crankshaft. |
| 3. 2 Stroke diesel engine require light flywheel. | 3. 4 Stroke diesel engine require heavy fly wheel. |
| 4. 2 Stroke engine lube oil consumption is less. | 4. 4 Stroke diesel engine lube oil consumption is more. |
| 5. 2 Stroke engine cylinder liner has port. | 5. 4 Stroke engine does not have ports in cylinder liner. |
| 6. 2 Stroke engine is crosshead type. | 6. 4 Stroke engine is trunk piston type. |