The mechanical properties of aluminum piston skirt made of LD11 alloy were measured.

By ufilizing the optical microscope,the field emission scanning electron microscope and the transmission electron microscope,the microstructure of aluminum piston skirt of 240 diesel engine was analyzed.

In this paper, simulations of isothermal forming of aluminum piston skirt are performed with rigid-plastic FEM.

The approximation to the longitudinal-section contour of piston skirt based on BP neural network;

As a result of high fuel consumption of 2108 diesel engine,a goal to lower fuel consumption is obtained by improving the design of 108 piston skirt size and optimizing the clearance between the piston and the jacket.

For the high-speed and high-performance modern engine,the piston skirt is a very important part in the piston design.

Based on the different influences of these variables to the quality of products, the billet of the piston skirt was selected.

Testing and comparative analysis is conducted of 4032 aluminum manufactured both at home and abroad, and the results indicate that the advantage of Alcoa 4032 aluminum for piston skirt in terms of chemical composition, microstructure and performances is significant to the smooth operation of a piston.

Load increased on piston,unreasonable design of piston pin boss,unevenly distributed positive stress on pin hole,stress on inside upper area of pin hole much higher than that on outside,the quality problem in machining and assembly are main reasons of fracture of steel-topped aluminium-skirted piston skirt.