Lubrication system, principle
C
7
13
F
B
E
D
5
6
12
4
9
8
2
11
A
1
3
10
P0006020
Oil is drawn up through the strainer (
1
) in the plastic
pipe (
2
) from the oil sump to the lubrication oil pump
(
3
) which forces oil via the delivery pipe (
4
) to chan-
nels in the cylinder block. The oil is led via the oil
cooler (
5
) to the filter housing (
6
). After the oil is filtered
in the two full-flow filters (
7
) it is led via a connection
pipe to the main cylinder block lubrication channel (
8
)
for distribution to all of the engine's lubrication points
and to the separator turbine (
9
) in those cases where
CCV, Closed Crankcase Ventilation, has been
selected. Lubrication of the valve mechanism takes
place via a channel drilled up to the control valve
(
10
).
Two external hoses supply the turbocharger (
11
) with
oil filtered in the full-flow filters (
7
).
The fine filtered oil from the bypass filter (
12
) is mixed
in with piston cooling oil which is led to the cylinder
block piston cooling channel. From here, oil is sprayed
against the underside of the pistons through nozzles
(
13
).
A Reduction valve – maintains oil pressure within
the correct values
B Safety valve – protects the oil pump, filter and
cooler against excessive pressure when the oil
has high viscosity
C Oil cooler thermostat valve – regulates oil tem-
perature to the optimum value
D Overflow valve for full-flow filter – opens and
allows oil to pass if the filters are clogged
E Opening valve, piston cooling – connects piston
cooling when the oil pressure reaches a set
opening value
F Control valve, piston cooling – controls the flow
of oil to the piston cooling oil channel
20-0 Engine Information, General
7748841 06-2010
83
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