4. REMEASURE

After the new fuel pump was installed, the engine was restarted and new ultrasonic measurements of fuel pumps were taken. The results can be shown as follow:

3. SHIP ENGINEERS CHECKS

The engine was stopped and cooled down, then the fuel pump no 6 was disassembled and inspected. The Fuel pump was found in very bad condition therefore the crew installed a new one.

Ultrasonic peak on the Fuel pump of unit 6 is observed, later the remaining units. As a conclusion of this analysis, it was recommended to check the Fuel pump condition on this unit.
Fuel pump ultrasonic measurements acquired with respect to the combustion curve can be shown as follows:

1. INTRODUCTION

The main engine condition is based on the real load calculated by our measuring equipment and vibration an ultrasonic measurements collected. The fuel pump condition is based on the combustion pressure readings taken during the engine operation and vibrations from the pump itself. The data obtained from the engine analysis was processed, analyzed and compiled by a qualified professional analyst, resulting in the following recommendations:

•   Unit no 6 – Fuel pump condition has to be checked.

DIESEL AUXILIARY ENGINE NO. 3 / ENGINE FUEL PUMP CONCERN

This document consists of the detection of fuel pump condition issue on unit no. 6 of a Hyundai MAN B&W 7L32/40. High, Raw, Ultra vibration and combustion pressure measurements were performed with vibration equipment, the results were analyzed.

2. THEORETICAL REFERENC

Late peak of fuel pump ultrasonic signal in respect to the combustion curve indicates a major problem with the pump condition.

2.1 VIBRATIONS COLLECTED

Fuel pump ultrasonic measurements acquired can be shown as follow:

Ultrasonic signal with respect to the combustion curve. Peak signal is achieved significantly after TDC of this unit. This ensures the analysist in that the recommendation is correct.

Power parade shows that unit no 6 has an issue with the fuel pump condition.

It is clearly shown that after the replece the fuel pumps are operating at the same moment.

If no actions where performed a serious damage could put this engine out of order for a long period of time.