Volvo Penta D2-55, Руководство по ремонту

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Design and function
Fuel system, general
The fuel is sucked from the fuel tank by the feed
pump, through a water separator/pre-filter (extra
equip.) and is pressed through a fine filter to the injec-
tion pump.
Return fuel from the injectors is fed through return fuel
lines, back to the tank.
Injection pump
The injection pump is an in-line flange mounted pump.
The pump is driven by cams on the engine’s cam-
shaft, which operates the pump chambers directly.
Centrifugal regulator
The regulator is mechanical and works with speed-
sensitive regulator weighs. It is mounted on the front
of the camshaft gear, from where it is also driven.
The regulator weights operate the injector pump con-
trol rod via the regulation sleeve, a lever and a regula-
tor arm. The engine speed is regulated throughout the
entire range, from low idle to high idle (all-speed type).
1. Fuel tank 5. Fuel fine filter
2. Primary filter 6. Injection pump
3. Water separator 7. Injectors
4. Feed pump