4TNE100 Yanmar Diesel Engine Spare Parts Piston 11900-22000

4TNE100 yanmar-diesel-engine-spare-parts piston 11900-22000
 

product description

Piston information:

Pistons are a type of piston used in gasoline engines that have been reduced in size and weight as much as possible. In extreme cases, they are reduced to the piston crown, support for the piston rings, and the remainder of the piston skirt to leave two platforms that stop the piston from rocking in the bore. The side of the piston skirt around the piston pin decreases away from the cylinder wall. The purpose is mainly to reduce the mass of the reciproing motion, which makes it easier to balance the engine and allows for high speeds. [4] In racing appliions, the sliding piston skirt can be configured to produce extremely low weight while maintaining the rigidity and strength of the full skirt. [5] The reduced inertia also increases the mechanical efficiency of the engine: the force required to accelerate and decelerate the reciproing parts causes the piston to rub against the cylinder wall more than the fluid pressure on the piston head. [6] A second benefit may be reduced friction with the cylinder walls, as the area of ​​the skirt sliding up and down in the cylinder is cut in half. However, most of the friction is due to the piston rings, which are actually the parts that fit most tightly in the piston pin's bore and bearing surfaces, thus reducing the benefit.

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