Pic. 2.8. Piston and piston skirt
The piston is made of aluminum alloy, and the skirt area is made compact and lightweight. The piston crown portion is wedge-shaped to improve fuel efficiency. The piston skirt is coated with a polymer to reduce friction losses. Piston pins of floating type. Increasing the accuracy of processing the cylinder made it possible to use pistons of the same outer diameter (see fig. 2.8).