Page 65 - Introduction to Marine Engineering

52 Diesel engines

Engine reversing
When running at manoeuvring speeds:
1. Where manually operated auxiliary blowers are Fitted they should be
started.
2. The fuel supply is shut off and the engine will quickly slow down,
3. The direction handle is positioned astern.
4. Compressed air is admitted to the engine to turn it in the astern
direction.
5. When turning astern under the action of compressed air, fuel will be
admitted. The combustion process will take over and air admission
cease.

When running at full speed:
1. The auxiliary blowers, where manually operated, should be started.
2. Fuel is shut off from the engine.
3. Blasts of compressed air may be used to slow the engine down.
4. When the engine is stopped the direction handle is positioned astern.
5. Compressed air is admitted to turn the engine astern and fuel is
admitted to accelerate the engine. The compressed air supply will
then cease.