TM 5-3895-346-14
FUEL INJECTOR
ENGINE OVERHAUL
FUEL INJECTOR
The fuel injector (Fig. 1 and 2) is a lightweight, compact unit which enables quick, easy starting directly on
diesel fuel and permits the use of a simple, open-type combustion chamber. The simplicity of design and
operation provides for simplified controls and easy adjustment. No high-pressure fuel lines or complicated air-
fuel mixing or vaporizing devices are required.
The fuel injector performs the following four functions:
1. Creates the high fuel pressure required for efficient injection.
2. Meters and injects the exact amount of fuel required to handle the load.
3. Atomizes the fuel for mixing with the air in the combustion chamber.
4. Permits continuous fuel flow. Combustion required for satisfactory engine operation is obtained by injecting,
under pressure, a small quantity of accurately metered and finely atomized fuel oil into the cylinder.
Figure 2. Cutaway View of Fuel
Injector
Figure 1. Fuel Injector Assembly.
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