PISTON ENGINE PROPULSIONChapter 4

Oil Systems

1933 Alvis Engine

2014HyundaiEngine

Distribution and Lubrication

TYPICAL OIL SYSTEM - PISTON ENGINE

SUMP

Engine Block‘WET’ SUMP SYSTEM

FilterPump

Common for most vehicles

TYPICAL OIL SYSTEM - PISTON ENGINE

SUMP

Engine Block‘DRY’ SUMP SYSTEM

FilterPump

High Performance/Rally vehicles and Aircraft

Tank Scavenge Pump

TYPICAL OIL SYSTEM – Distribution

Let’s take a closer look at what

happens here

TYPICAL OIL SYSTEM – Bearing Locations/Lubrication

Front Bearing Support

Rear Bearing Support

Bearing Support

Bearing Support

Bearing Support

No 1 Piston

1

No 2 Piston

2

No 3 Piston

3

No 4 Piston

4

CRANKSHAFT FROM A 4 CYLINDER ENGINE

TYPICAL OIL SYSTEM – Bearing Lubrication

Oil Splash

Oil Splash

Oil Splash Oil

Splash

Crankshaft Internal Oil Feed

Plain Bearing

Oil Distribution Groove

Lubricating Oil Film

Con Rod Big End

TYPICAL OIL SYSTEM - Internal Gear Type Pump

Driving Gear

Driven Gear

‘Kidney’ Ports

Pump Body

Kidney Ports

Yellow = Yellow = Inlet FlowInlet Flow

Red = Outlet Flow

Pump Assembly – (end plate removed)

Rotating Parts

Any Questions?