Fuel System - wsm ME8200 Workshop Manual

ME8200, ME9000, WSM

2. FUEL SYSTEM

Fuel from the fuel tank (1) suck up by feed pump (9) through the separator (2) and then enter the fuel filter (3).
After impurities such as dirt, water etc. are removed, the fuel enter the injection pump (4) and is pressurized.
The fuel pressurized by the injection pump to the opening pressure (13.7 to 14.71 MPa, 140 to 150 kgf/cm
to 2062 psi) of the injection nozzle (5) is injected into the combustion chamber.
Part of the fuel fed to the injection nozzle (5) lubricates the moving parts of the plunger inside the nozzle, then
returns to the fuel tank (1) through the overflow pipe (7) and check valve (8) another end of overflow pipe is connected
to pump body by joint.
Thus, this system is designed to prevent mixing of air into fuel which causes hard starting.
1-M2
ENGINE
(1) Fuel Tank
(2) Separator
(3) Fuel Filter
(4) Injection Pump
(5) Injection Nozzle
(6) Injection Pipe
(7) Fuel Overflow Pipe
(8) Check Valve
(9) Fuel Feed Pump
W1012846
2
, 1991
KiSC issued 03, 2007 A