TATA BS6 & BS4 इंजन पिस्टन और पिस्टन रिंग को कैसे फिट करना है।

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  • čas přidán 13. 09. 2024
  • 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.
    Piston rings are designed to seal the gap between the piston and the cylinder wall
    If this gap were too small, thermal expansion of the piston could mean the piston seizes in the cylinder, causing serious damage to the engine. On the other hand, a large gap would cause insufficient sealing of the piston rings against the cylinder walls, resulting in excessive(combustion gases entering the crankcase) and less pressure on the cylinder, reducing the power output of the engine.
    The sliding motion of the piston ring inside the cylinder wall causes friction losses for the engine. The friction caused by piston rings is approximately 24% of the total mechanical friction losses for the engine.The design of the piston rings is therefore a compromise between minimising friction while achieving good sealing and an acceptable lifespan.

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