The lower cylindrical portion of the piston which improves piston cooling performance is called
A
Piston crown
B
Connecting rod
C
Piston pin boss
D
Piston skirt
Correct Answer: Piston skirt
The piston skirt is the cylindrical walls of a piston. During manufacture, the surface of the piston skirt is left slightly rough which helps retain lubrication.The piston skirt acts as a guide as the piston goes up and down in the cylinder.