Description of generator ancillary equipment, diesel fuel, and lube oil systems

Generators are used to supply primary power, standby power and emergency power. The generators used at most facilities are often powered by diesel engines. This course material will address the ancillary equipment consisting of a typical diesel fuel and lube oil system.

1. Diesel fuel system. A diesel fuel system is shown in figure 5-1, Schematic of a typical diesel fuel system. The system consists of a storage tank, strainer, motor driven pump, filter, expansion tank, heater, day tank, cooler, engine mounted duplex filter and engine mounted pump.
2. Lube oil system. A lube oil system is shown in figure 5-2, Schematic of a typical lube oil system. The system consists of a clean lube oil tank, dirty lube oil tank, pumps, lube heaters, cooler, centrifuge, duplex filter and duplex strainer.
3. Diesel fuel and lube oil systems. More information on design, maintenance, and testing of diesel fuel and lube oil systems and generators is found in the American Society of Mechanical Engineers (ASME): B 31.3.