FUEL PUMP
Filtered fuel
is
forcibly sucked from the tank by the fuel pump and fed under pressure to the
injection pump.
Inlet and discharge pressures are produced by a vertical movement of the
diaphragm which is caused by the
special cam (for pump) of the fuel camshaft. Fuel is suctioned
on the downward stroke, and discharged on the upward stroke. A system of two
valves allows fuel
to flow
in
only one direction.
FUEL
INJECTION PUMP
Inlet stroke
Discharge stroke
(6)
t
1.
From Fuel Filter
2.
Inlet
Valve
3.
Outlet
Valve
4.
Diaphragm
5.
Fuel Camshaft
6.
To
Injection
Pump
The K type mini pump is provided, it features high injection quality even at low engine speed. The
fuel injection pump plunger is reciprocated by the fuel camshaft which is driven by the crankshaft
through a system of timing gears.
Fuel camshaft rpm is
1/2
of camshaft rpm.
(2)
(3)
Fuel Injection pump
l"If1\~
qJlIIL\l~-
(9)
~..,j,---(6)
1.
Delivery Valve Holder
2. Delivery Valve Spring
3.
Delivery Valve
'j
4.
Plunger
5.
Cylinder
Pump Element
6.
Control Rack
7.
Tappet
8.
Plunger Spring
9.
Air
Vent Screw
62
(9)
(5)
(4)
(7)
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