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
Fuel storage tanks may be located above ground indoors or outdoors, or buried underground.
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
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1. | Injector return line | 8. | Fuel supply line from main fuel tank to day tank |
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2. | Day tank vent | 9. | Overflow line |
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3. | Day tank | 10. | Foot valve |
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4. | Auxiliary fuel pump | 11. | Main fuel storage tank |
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5. | Tank drain | 12. | Fuel tank vent |
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6. | Electric fuel level control switch | 13. | Tank filling inlet |
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7. | Fuel supply line from day tank to engine connection |
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Figure
Section 6 Fuel Systems 25 |
