FOSU Automatic Fuel Oil Supply Unit - Marine Fuel Oil Supply Unit - Hi-sea

FOSU Automatic Fuel Oil Supply Unit

FOSU Automatic Fuel Oil Supply Unit


The product is used for fuel oil system including land power station and marine main engine, auxiliary engine burning high-viscosity heavy fuel oil.

The fuel oil supply unit is pressure-style fuel oil supply system. It has high thermal efficiency, compact structure, beautiful appearance, and cutting down the shipbuilding period. The unit is provided with automatic back-flushing of filter, automatic pump alternative, automatic exhaust, PLC auto/hand control, automatic error alarm so on function. It is the essential equipment of vessels driving device making distributed central monitoring.

Main Products
FOSU Automatic Fuel Oil Supply Unit

0.6m³ Fuel Oil Supply and

Booster Module

1.1m³ Marine Diesel Fuel

Oil Supply Unit

1.5m³ High Performance Fuel

Oil Supply Modular Unit

1.8m³ Heavy Fuel Oil

Supply Unit

2m³ Oil Supply System

2.5m³ Marine Fuel

Oil Supply Plant

3 m³ Marine Diesel Fuel

Oil Supply Unit

Main Technical Parameters

Type Flow rate m³/h Outlet Press. Outlet Viscosity Steam Press. Outline Dimension Weight Kg M/E Power 1000KW
FOSU-0.6/5A 0.6 0.5~1.0MPa 10~12cst 0.7MPa 2300*1200*1800 1780 1~1.5
FOSU-1.1/5A 1.1 2350*1250*1800 2090 1.6~3
FOSU-1.5/5A 1.5 2350*1250*1800 2250 3~3.5
FOSU-1.8/5A 1.8 2350*1250*1800 2380 3.5~4.5
FOSU-2.0/5A 2 2350*1250*1900 2380 4.5~5
FOSU-2.5/5A 2.5 2350*1300*1900 2450 5~6
FOSU-3.0/5A 3 2400*1300*1900 2680 6~7

Rated fuel viscosity control range


Maximum fuel supply pressure


Actual oil supply pressure range


Supply tank


Maximum temperature


Heating medium

Steam/Hot oil+Electric



Outline Dimension


Heat transfer oil temperature


Steam pressure


Electric heating power


Total installed power




Principle Description

The automatic fuel oil supply unit is composed of oil supply pumps, circulating pumps, flowmeter, mixing tank, primary fuel filter, self cleaning fuel filter, fuel oil heater, fuel oil viscosity control system, PLC electric controller, instruments, valves, attachments, and so on.

The heavy fuel oil is heated to more than 80℃ in the daily oil tank and that enters the inlet of fuel oil supply unit, by primary fuel filter. Then the fuel oil is supplied to mixing tank by supply pumps. By mixture with main engine return oil, circulating pump has increased the pressure to the heater to reduce the viscosity. The self cleaning filter finishes the filtering. Then the heavy fuel oil heating temperature is controlled by viscosity control system, and the fuel oil fitting for main engine enters the main engine.

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