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2. Piston ring - Wikipedia

   en.wikipedia.org/wiki/Piston_ring

   A piston ring is a metallic split ring that is attached to the outer diameter of a piston in an internal combustion engine or steam engine. The main functions of piston rings in engines are: Sealing the combustion chamber so that there is minimal loss of gases to the crank case.

3. Component parts of internal combustion engines - Wikipedia

   en.wikipedia.org/wiki/Component_parts_of...

   A piston is a component of reciprocating engines. It is located in a cylinder and is made gas-tight by piston rings. Its purpose is to transfer force from expanding gas in the cylinder to the crankshaft via a piston rod and/or connecting rod. In two-stroke engines the piston also acts as a valve by covering and uncovering ports in the cylinder ...

4. Piston - Wikipedia

   en.wikipedia.org/wiki/Piston

   The main piston has a large piston rod extending downwards from the piston to what is effectively a second smaller-diameter piston. The main piston is responsible for gas sealing and carries the piston rings. The smaller piston is purely a mechanical guide. It runs within a small cylinder as a trunk guide and also carries the gudgeon pin.

5. Internal combustion engine - Wikipedia

   en.wikipedia.org/wiki/Internal_combustion_engine

   Bare cylinder block of a V8 engine Piston, piston ring, gudgeon pin and connecting rod. The base of a reciprocating internal combustion engine is the engine block, which is typically made of cast iron (due to its good wear resistance and low cost) [22] or aluminum.

6. Four-stroke engine - Wikipedia

   en.wikipedia.org/wiki/Four-stroke_engine

   Piston ring flutter occurs when the rings oscillate vertically within the piston grooves they reside in. Ring flutter compromises the seal between the ring and the cylinder wall, which causes a loss of cylinder pressure and power. If an engine spins too quickly, valve springs cannot act quickly enough to close the valves.

7. Cylinder (engine) - Wikipedia

   en.wikipedia.org/wiki/Cylinder_(engine)

   Cylinder liners (also known as sleeves) are thin metal cylinder-shaped parts which are inserted into the engine block to form the inner wall of the cylinder. [4] [5] Alternatively, an engine can be 'sleeveless', where the cylinder walls are formed by the engine block with a wear-resistant coating, such as Nikasil or plasma-sprayed bores.