Piston Engines: Overview and Mechanical Arrangement

Piston Engines: Overview and Mechanical Arrangement

1. Piston Engine Propulsion Overview and Mechanical Arrangement

2. What is a Piston Engine? - It is an internal combustion engine which produces power by controlled burning of fuel. A piston moves back and forth in a cylinder . The engines power is generated by a force exerted on the piston by the rapid expansion of the gases resulting from the combustion of a compressed fuel – air mixture . The power from the motion of the piston is transmitted through a connecting rod to a crankshaft, which is connected to the propeller.

3. Cylinder Piston Connecting Rod Crank Shaft ‘Big-end’ Gudgeon Pin Main Bearings Offset Bearing Counter Balance Weight

4. 1 2 3 4 Pistons Crankshaft Rear Front Flywheel attachment flange Timing Belt and Water Pump driving pulley location Main Bearings

5. Sump (Oil Tank) ‘Rocker Box’ Cover Cylinder Block Flywheel Valve Gear Crankshaft and Pistons Exploded View of the Engine Cylinder Head Assembly Timing Shaft

6. Inlet Valve Exhaust Valve

7. Rocker Rocker Shaft Closing spring Valve Seat Push Rod Cam Shaft Inlet Valve Closed Inlet Valve Open Valve Lift