Perkins 4008-30 SD8, Эксплуатация систем, испытания и настройка

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Engine Oil Flow Through the
Engine Oil Filter and Engine Oil
Cooler
When the engine is at normal operating temperature,
the engine oil pump (2) pumps engine oil from the
engine oil pan (7) through the strainer (4). The engine
oil is pumped to the engine oil cooler (5). The engine
oil flows through the engine oil filters (6) to the oil
gallery in the cylinder block and to the supply line (1)
for the rocker shafts. Engine oil from the turbocharger
goes back through the return line (9) to the engine oil
pan (7).
The three engine oil filters are full flow oil filters.
Engine Oil Flow in the Engine
The engine oil pump has a pressure relief valve that
is designed to open if the engine oil pressure
becomes excessive. This prevents high-pressure
engine oil from damaging the O-ring seals for the
engine oil cooler and for the engine oil filter. The
remainder of the engine oil is pumped normally to the
engine oil gallery in the cylinder block.
The engine oil gallery is the source of pressurized
engine oil for the engine and for the attachments.
The flow of engine oil which goes to the main
bearings is divided. Some of the engine oil provides
lubrication between the main bearings and the
bearing surfaces (journals) of the crankshaft. Some
of the engine oil goes through the drilled passages
into the crankshaft. This engine oil provides
lubrication between the connecting rod bearings and
the bearing surfaces (journals) of the crankshaft. The
engine oil provides cooling and lubrication for the
following components:
• Pistons
• Piston pins
• Cylinder walls
• Camshaft bearings
• Pushrods
• Valve lifters
Some of the engine oil lubricates the valve stems.
The remainder of the engine oil drains from the
cylinder head to lubricate the pushrods.
The bearings for the timing gear receive pressurized
engine oil from the oil gallery.
For components on the outside of the engine such as
the turbocharger, engine oil goes through supply
lines from the engine oil gallery.
8 M0064276
Lubrication System