Carrier TRANSICOLD 69UG15, Руководство по эксплуатации и обслуживанию

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2–5 T-375
2.4.1 Engine Fuel System
The engine fuel system (see Figure 2.5 ) is a closed circuit that injects a precise amount of atomized fuel into the
engine cylinders.
A mechanical lift pump initially transfers fuel at low pressure from the fuel tank and through the fuel shutoff valve.
Fuel exits the lift pump and is pushed into the fuel filter / water separator to remove water and finer particles. An
optional in-line fuel strainer can be used prior to the fuel filter / water separator to trap large particles. The fuel filter
/ water separator also contains a 12-volt fuel heater to heat the fuel. Low pressure fuel then enters the injection
pump, where it is compressed to higher pressures and distributed to individual fuel lines that supply an injector
nozzle for each cylinder. The injector nozzles spray atomized fuel into the combustion chamber based on the tim -
ing of the injector pump. Any excess fuel in the nozzles not used for combustion is sent back to the fuel tank.
Figure 2.5 Engine Fuel System
1) Fuel Tank
2) In-Line Fuel Strainer (option)
3) Mechanical Lift Pump
4) Fuel Filter / Water Separator
5) Injection Pump
6) Injector Nozzles (4)
7) Manual Fuel Bleed Valve
- - - - -
Fuel Tank Supply / Return
6
2
3 4
5
7
1
3
2
4
7
5
6
Fuel Tank Supply / Return