Because the diesel engine has a number of eggplant pressure seals, such as between cylinder liner, piston and piston ring, and between turbocharger and turbocharger rotor shaft, it is generally only able to play a full role when the engine is about one-third of the load, and some leakage may occur during the load time. Therefore, foreign engine manufacturers generally emphasize in their manuals. The diesel generator works under a small load and the running time lasts, as shown in Fault 1 below. Piston – cylinder liner seal is not good, oil on the channel, into the combustion chamber combustion, exhaust smoke. 2. The supercharged diesel engine has low load, no load and low supercharging pressure. Supercharger oil seal (non-contact) sealing effect teeth easy to fall off, jump into the oil pressurization chamber, and the intake into the cylinder together. 3. Rise to the cylinder of some oil to participate in combustion, some oil can not be completely burned, in the valve, inlet, piston top, piston ring and so on the formation of carbon, some and exhaust emissions. In this way, the oil gradually accumulates in the cylinder liner exhaust port, and the accumulation is formed. 4 supercharger supercharger chamber oil accumulation to a certain extent, the combination surface of the supercharger is leaked out. 5. Small load operation of organs will lead to serious wear of moving parts, deterioration of engine combustion environment and other results such as advanced maintenance time. Therefore, foreign diesel engine manufacturers emphasize the need to minimize the low load/no load running time, whether using natural suction or supercharged models, and stipulate that the small load must be watanabe to less than 25 to 30 percent of the rated power per unit.
Post time: May-19-2023