Fuel Flashcards
Describe tests which are carried out on a fuel injector after overhaul
- Visually examine the injector
- Connect injector to a testing rig
- Pump the injector up to pressure and ensure it opens at the correct bar
- Spray pattern test can now be done which ensures the fuel will be atomized and distributed correctly into the fine droplets needed
- Leakage Test can also be preformed which basically ensures that there is no fuel dribbling from the injector nozzle at any given time, especially when it is meant to be closed
In the case of a main engine and Controllable Pitch Propeller (CPP) not responding to bridge control, Describe the routine for changing to and using engine room control
1), Alert the Chief Engineer and engine room staff.
2), Stand by at the Engine Control Console (ECR)
3), Match CPP Pitch Settings, shown on the bridge with the current setting in the ECR.
4) Take Manual Control of CPP, switch from remote (bridge) to local (engine room).
5), Establish Continuous Communication with the Bridge .
6), Adjust pitch and engine speed manually as per bridge orders.
7), Monitor all parameters such as pitch indicators, shaft speed while also ensuring CPP system is functioning correctly.
8), Return to normal operation once the issue has been resolved.
Explain how control of fuel pump delivery is achieved when emergency manoeuvring on engine side control of a large 2 stroke crosshead engine
1), Alert Chief Engineer and engine staff and stand by in the ECR.
2), Match engine speed settings between bridge and ECR to avoid sudden changes.
3), Establish Communication with the Bridge.
4), Select manual control mode on the engine control panel.
CONTROL CAN NOW BE TAKEN OVER BY ENGINE SIDE
5), disconnect the governor to isolate automatic speed control.
6), Operate the manual control lever or wheel (on engine) to adjust the fuel rack and control engine speed.
7), Ensure control air valve is on local.
CONTROL IS NOW FULLY ON ENGINE SIDE
8), All operations are done manually based on bridge instructions.
