ENGINE
M6060, M7060, WSM
1-M11
[2] SUPPLY PUMP
The supply pump is equivalent to previously used
injection pumps and it delivers fuel to the rail at a
pressure more than double that of previous pumps.
It consists of a feed pump (10), regulating valve (6),
SCV (suction control valve) (2), pump unit, delivery valve
(3) and a fuel temperature sensor (1).
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Feed Pump
The feed pump sucks up fuel filtered by the fuel filter
and supplies it to the pump unit.
The feed pump is a trochoid pump with an inner rotor
and outer rotor (1) geared elliptically; the inner rotor (3)
is driven by the drive shaft (2) and drives the outer rotor
in turn in the same direction. In the process, the volume
of the part enclosed by the teeth of the rotor changes and
thus pumps the fuel.
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Regulating Valve
The regulating valve controls the fuel feed pressure
(feed pump discharge pressure) so it always stays at the
set pressure.
When the feed pressure exceeds the set pressure
due to changes in the pump's RPM, the piston (4)
overcomes the pressure of the spring, opening the valve
and returning fuel to the suction side of the feed pump
(2).
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(1) Fuel Temperature Sensor
(2) SCV (Suction Control Valve)
(3) Delivery Valve
(4) Plunger
(5) Suction Valve
(6) Regulating Valve
(7) Drive Shaft
(8) Eccentric Cam
(9) Ring Cam
(10) Feed Pump
(1) Outer Rotor
(2) Drive Shaft
(3) Inner Rotor
A: Suction Port
B: From The Fuel Tank
C: Discharge Port
D: To Pump Chamber
(1) Pump Housing
(2) Feed Pump
(3) Bushing
(4) Piston
(5) Spring
(6) Plug
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