Piston is one of the main moving parts of diesel
engine.
The gas pressure is transmitted to the crankshaft through the
connecting rod to realize the transformation of heat energy into mechanical
energy.The working condition of the piston is rather harsh, it is with a
temperature of 1400-1800 DEG C, and the pressure Up to 13MPa gas phase
contact, resulting in a large thermal stress and alternating mechanical
stress.
It is seriously corroded by the gas, and it has strong friction and
impact with the cylinder wall under the boundary lubrication
condition