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What kind of environment does the diesel generator piston work under?

What kind of environment does the diesel generator piston work under?

Diesel generators are composed of engines, generators, control systems, and cooling systems. For the piston, anyone who knows the engine knows that it is one of the most important parts of the engine.
The piston connecting rod group is composed of piston, piston ring, piston pin, connecting rod, connecting rod bearing and so on.
Piston function: The function of the piston is to withstand gas pressure and transmit it to the connecting rod through the piston pin to drive the crankshaft to rotate. The top of the piston is also a component of the combustion chamber.
The piston works under the conditions of high temperature, high pressure, high speed and poor lubrication. The piston is in direct contact with the high-temperature gas, and the instantaneous temperature can reach above 2500K. Therefore, the heating is serious and the heat dissipation conditions are very poor. Therefore, the temperature of the piston is very high during operation, the top is as high as 600-700K, and the temperature distribution is very uneven; the top of the piston bears The gas pressure is very high, especially the working stroke pressure is the highest, the gasoline engine is as high as 3~5MPa, the diesel engine is as high as 6~9MPa, which makes the piston produce impact and bear the side pressure; ~12m/s) reciprocating motion, and the speed is constantly changing, which produces a large inertial force, which makes the piston subject to a large additional load. Pistons working under such harsh conditions will deform and accelerate wear. They will also generate additional loads and thermal stresses, and are subject to chemical corrosion from the gas.