An internal combustion engine burns fuel inside its cylinders. When the fuel burns, the combustion process produces an expanding force. This expanding force is converted by the engine into a rotary force used to propel the motor vehicle along.

Practically all the engine parts are either directly or indirectly attached to the engine block. The engine block contains the cylinders, the piston s, and the connecting rods, as well as the crankshaft and sometimes the camshaft.

The pistons are the cylindrical-shaped component that forms the movable seal in a cylinder. A piston moves up and down in one of the engine block cylinders. The explosive force of combustion is exerted upon the surface of the piston, which is known as the head or the crown of the piston. The head of a piston can be a great variety of shapes depending on the engine design chosen by the engine manufacturer. The more common head designs are flat, concave or convex – it all depends on whether they want to create turbulence inside the combustion chamber or whether the design is such that the combustion is as controlled as possible.

The pistons have grooves cut into the side of the piston to accommodate the piston rings which help seal the combustion chamber.

The main section of the piston is called the skirt, which does come into contact with the cylinder head wall. The skirt also takes the thrust caused by the rotating crankshaft. The piston pin is used to connect the piston to the connecting rod. The connecting rod joins the piston indirectly to the crankshaft.We hope that helps answer the question ‘What is What is a Piston?’!

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