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TYPICAL OIL SYSTEMS. Jet Engines. Distribution and Lubrication. Scavenge Pump. SUMP. i.e. oil was lost in the gas stream. Early jet engines were total loss system. Engine Bearing Chamber. Pump. Filter. Tank. Jet engines are now ‘DRY-SUMP - RE-CIRCULATING’ Oil systems.

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Presentation Transcript
slide1

TYPICAL OIL SYSTEMS

Jet Engines

Distribution and Lubrication

slide2

Scavenge Pump

SUMP

i.e. oil was lost in the gas stream

Early jet engines were total loss system

Engine Bearing Chamber

Pump

Filter

Tank

Jet engines are now

‘DRY-SUMP - RE-CIRCULATING’

Oil systems

TYPICAL OIL SYSTEM - JET ENGINE

slide3

Front Bearing Chamber

Centre Bearing Chamber

Rear Bearing Chamber

Roller Bearing

Ball Bearing (Location Bearing)

Roller Bearing

Bearing Chambers

TYPICAL OIL SYSTEM - JET ENGINE

slide4

Let’s take a closer look at what happens here

OIL COOLER

MCD

MCD

MCD

PRESSURE

SCAVENGE

MASTER MCD

Notional oil system

OIL PUMP ASSEMBLY

OIL TANK

TYPICAL OIL SYSTEM - JET ENGINE

slide5

Oil Jet

Scavenge

Oil Supply

Bearing Support Structure

Shaft

Bearing Oil Supply and Scavenge

TYPICAL OIL SYSTEM - JET ENGINE

slide6

Pressurised air from compressors

Oil Supply

Bearing Support Structure = static part

Higher pressure air forced into the Bearing Chamber prevents oil loss

Shaft = rotating part

Oil Jet

Air/Oilscavenged away to tank

TYPICAL OIL SYSTEM - JET ENGINE

slide7

Clean(?) Air Overboard

OIL COOLER

MCD

MCD

MCD

PRESSURE

MASTER MCD

Gearbox Drive

Scavenge Oil passes throughAir/OilSeparatorinOil Tank

Centrifugal Breather

with Air Sealing

Notional oil system

OIL PUMP ASSEMBLY

SCAVENGE

OIL TANK

TYPICAL OIL SYSTEM - JET ENGINE