Operation7218−3/A1
Winterthur Gas & Diesel Ltd.
2/ 5
2. Feed Rate Adjustment
CAUTION
Equipment Hazard: The results of the bunker analysis and the
values given in the Bunker Delivery Note (BDN) can be different.
Always use the higher sulfur content value to adjust the feed rate.
This makes sure that the engine operates safely.
To prevent damage to the engine, it is necessary to set the feed rate in relation to the
used fuel and cylinder lubricating oil.
To set the applicable feed rate, it is necessary to make an analysis of the PU drain oil.
Set the feed rate related to the analysis of the residual base number (BN) and the iron
content of the PU drain oil. For more data and the procedure to get a sample of PU
drain oil, refer to 0750−1 Lubricating Oils, paragraph 3.2.
To adjust the cylinder lubricating oil feed rate, use the data that follows:
D Current feed rate [g/kWh]
D Residual base number (BN) and iron content of the PU drain oil
D The sulfur content [% m/m] of the used heavy fuel oil (HFO)
D The BN [mg KOH/g] of the used cylinder lubricating oil.
2.1 Empirical Data Collection
To adjust the feed rate to an applicable value, it is necessary to collect empirical data
for each engine.
Start to collect the empirical data after the first running-in period of the engine. For the
procedure, WinGD recommends to use lubricating oil with the highest available BN in
relation to the used fuel. Use a baseline feed rate of 0.9 g/kWh. For more data, refer
to 0750−1 Lubricating Oils.
Collect the data of the PU drain oil samples at different engine loads. For the
procedure to get a sample of PU drain oil, refer to 0750−1 Lubricating Oils,
paragraph 3.2. Make sure that you always operate the engine in the safe operation
area (see Fig. 1, Fig. 2 and Fig. 3). If necessary, adjust the feed rate and/ or the
lubricating oil base number. For specified recommendations related to the selected
feed rate, refer to the WinGD PU Drain Oil Analysis Tool.
2017−08
Feed Rate − Adjustment
To Next Page
Loading...
