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TYPICAL OIL SYSTEMS. Piston Engines. Distribution and Lubrication. Pump. Filter. SUMP. ‘WET’ SUMP SYSTEM. Engine Block. Common for most vehicles. TYPICAL OIL SYSTEM - PISTON ENGINE. Pump. Filter. Tank. Scavenge Pump. SUMP. ‘DRY’ SUMP SYSTEM. Engine Block.
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TYPICAL OIL SYSTEMS Piston Engines Distribution and Lubrication
Pump Filter SUMP ‘WET’ SUMP SYSTEM Engine Block Common for most vehicles TYPICAL OIL SYSTEM - PISTON ENGINE
Pump Filter Tank Scavenge Pump SUMP ‘DRY’ SUMP SYSTEM Engine Block High Performance/Rally vehicles and Aircraft TYPICAL OIL SYSTEM - PISTON ENGINE
Let’s take a closer look at what happens here TYPICAL OIL SYSTEM – Distribution
3 2 4 1 No 4 Piston No 3 Piston No 2 Piston No 1 Piston Rear Bearing Support Bearing Support Bearing Support Bearing Support Front Bearing Support CRANKSHAFT FROM A 4 CYLINDER ENGINE TYPICAL OIL SYSTEM – Bearing Locations/Lubrication
Con Rod Big End Oil Splash Oil Splash Plain Bearing Lubricating Oil Film Oil Distribution Groove Internal Oil Feed Crankshaft Oil Splash Oil Splash TYPICAL OIL SYSTEM – Bearing Lubrication
Pump Body ‘Kidney’ Ports Driven Gear Driving Gear Yellow = Inlet Flow Red = Outlet Flow Pump Assembly – (end plate removed) Rotating Parts Kidney Ports TYPICAL OIL SYSTEM - Internal Gear Type Pump