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Mechanical Arrangement. Piston Engines. The main bits and pieces that make up the piston engine. Mechanical Arrangement - Basics. Leg force in direction ‘ B ’ gives rotational force on pedal/crank propels bicycle along. Hand force in direction ‘ A ’ gives rotational force on nut.
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Mechanical Arrangement Piston Engines The main bits and pieces that make up the piston engine
Leg force in direction ‘B’ gives rotational force on pedal/crank propels bicycle along Hand force in direction ‘A’ gives rotational force on nut Mechanical Arrangement - Basics
Main Bearings Offset Bearing Counter Balance Weight Gudgeon Pin Cylinder Piston Connecting Rod ‘Big-end’ Crank Shaft Mechanical Arrangement - Basics
3 2 4 1 Timing Belt and Water Pump driving pulley location Flywheel attachment flange Rear Front Main Bearings Pistons Crankshaft Mechanical Arrangement - Basics
‘Rocker Box’ Cover Valve Gear Cylinder Head Assembly Cylinder Block Timing Shaft Flywheel Crankshaft and Pistons Sump (Oil Tank) Exploded View of the Engine Mechanical Arrangement – Main Parts
Exhaust Valve Inlet Valve Valve Operation The Inlet Valve needs to be open to allow fuel/air mixture in The Exhaust Valve needs to be open to allow burnt gases out Mechanical Arrangement – Valve Gear
Rocker Rocker Shaft Closing spring Valve Seat Push Rod Cam Shaft Valve Lift Inlet Valve Closed Inlet Valve Open Push Rod Mechanism Mechanical Arrangement – Valve Gear
Overhead Cam and Rocker Overhead Cam -No Rocker Push Rod Mechanism Mechanical Arrangement – Valve Gear
Twin Cam System Chain Tensioners Cam Drive Mechanism Crankshaft and Pistons Modern Engines use a toothed rubber belt to drive the cam shafts Mechanical Arrangement – Valve Gear
Put it all together How does it work? Mechanical Arrangement