柴油发电机组机体多处都是采用压力密封的形式，如汽缸套、活塞、活塞环间，增压器、增压器转子轴间，这种密封一般在发动机有约1/3负荷时，才充分发挥作用，若发电机组长时间低负载下运行会出现以下故障： Diesel generating set is more than the body in the form of pressure seal, such as cylinder, piston ring, piston, turbocharger, supercharger rotor shaft, this seal in the engine, about one-third of the load to give full play to the role, if the generator group leader time under low load operation will appear the following failures:
Blue smoke coming 1.
Piston and cylinder liner seal is bad, the oil is up, burning into the combustion chamber, the exhaust blue smoke.
2. The oil straggling
For supercharged diesel engine, due to low load and no-load, boost pressure is low. Easily resulting in a decline in the sealing effect of the turbocharger oil seal, oil into the pumping chamber, along with the air inlet into the cylinder.
3. The carbon deposit
Is up to the part of the cylinder oil burnt, part of the oil can't complete combustion, at the top of the valve, inlet, piston, piston ring, the place such as the formation of coke, and part with the exhaust. In this way, the cylinder jacket exhaust passage for oil will gradually accumulate, also can form carbon deposit.
Leakage of 4.
Supercharger turbo indoor oil accumulation to a certain degree, is seeping from the combination of the supercharger surface.
5. Part wear
Long-term low load operation, will lead to the moving parts wear more serious, combustion engine overhaul period of early consequences such as environmental degradation.
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