Lubrication system reduces fuel consumption
Shipowners could reduce fuel consumption by 1.5% with a onboard blending lubrication system.
Maersk Fluid Technology (MFT) has released a new video to share the benefits of its SEA-Mate Blending-on-Board (BOB) lubrication system, which also reduces lube oil consumption by up to 40%.
BOB allows the operator/vessel to use the in-use system oil as a base oil and blend with a high BN cylinder oil product as at plants ashore.
BOB, which can be adjusted to whatever fuel the company has in operation, makes sure the cylinder oil matches the fuel composition.
Fixed lubrication feed
The cylinder lubrication feed rate is fixed at the optimal minimum feed and instead of increasing feed rate BOB adjusts the blend composition without interruption.
MFT said this method allows it to save around 40% of its cylinder oil consumption and create a natural consumption of system oil, enabling it to add fresh oil to the engine sump regularly.
It said this improves system oil properties such as detergency and anti-wear.
No engine deposits
As system oil is being continually refreshed, particles and deposits are no longer accumulated in the engine.
This enables the separator and preheater to run much more efficiently, reduce sludge generated and energy consumed, MFT added.
System oil viscosity is being brought back to original levels by using BOB.
This prevents a lot of system oil from being discarded as sludge and optimised separator operation and improved system oil viscosity saves up to 1.5% fuel.
Old system problematic
Using the old lubrication system, oil got thicker and its additives became inactive with the result of more friction and wear, energy loss and contamination inside. MFT said this often led to breakdowns in the hydraulic system.
The separator was the only equipment available to keep it clean. Additionally, the cylinder oil was expensive and rarely matched the fuel.
This meant the lube system had to over-lubricate to keep cold corrosion at bay, although this didn’t always work.
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