Kohler Generator Sets 20--2800 kW User Manual download pdf (Page 37)

TP-5700 7/93 25Section 6 Fuel Systems

Section 6 Fuel Systems

When planning an installation, check state and local

regulations regarding fuel storage and handling. Piping and

fuel system components must conform to these

regulations.

6.1 Diesel Fuel Systems

Since diesel fuel is less volatile than gas or gasoline, it

may be considered safer fuel from the standpoint of

storage and handling. This is often reflected in less

stringent regulations for placement of tanks. In some

locations, main tanks of considerable size are permitted

inside the building or enclosure; however, local

regulations must be checked before planning the

installation.

The main components of a typical diesel fuel system are

a main fuel storage tank, fuel lines, transfer tank, and

auxiliary fuel pump. See Figure 6-1.

Fuel storage tanks may be located above ground

indoors or outdoors, or buried underground.

“Base-mounted” or “subbase” tanks are commonly

used. This is a tank that is contained in a base that the

generator is mounted on. See Figure 6-2.

Fuel filters and sediment drains must be easily

accessible for regular and frequent service. Cleanliness

of the fuel is especially important on diesel engines

which have easily clogged, precision fuel injectors and

pumps. Black iron pipe or steel tubing must be used for

diesel fuel systems—galvanized tanks and piping must

not be used since the diesel fuel will react chemically

with them to produce flaking which will quickly clog filters

or causes failure of the fuel pump or injectors. All flexible

lines must be of the type approved for diesel fuels.

1 2 3 4

568

TP-5700-6

1. Injector return line

2. Day tank vent

3. Day tank

4. Auxiliary fuel pump

5. Tank drain

6. Electric fuel level control switch

7. Fuel supply line from day tank to engine connection

8. Fuel supply line from main fuel tank to day tank

9. Overflow line

10. Foot valve

11. Main fuel storage tank

12. Fuel tank vent

13. Tank filling inlet

Figure 6-1 Diesel Fuel System

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Kohler Generator Sets 20--2800 kW User Manual Page 37

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