Reasons for "blue smoke" when the diesel engine fire pump is in use

The diesel engine fire pump adopts a large-capacity fuel tank, which can greatly increase the continuous running time of the generator. When there is no power supply or the power is cut off, it can be used in conjunction with the electric fire pump. Today's diesel engine fire pumps have a high degree of automation, superior technology and performance, complete protection functions, and simple operation. In addition to the previous manual control, equipped with a complete set of intelligent control cabinets, the diesel engine fire pump has the advantage of automatic control. When the self-start signal is input or the start button is pressed manually, the self-start, unit operation, fault shutdown protection, etc. are automatically completed.
  The diesel engine fire pump is driven by the diesel engine through an elastic coupling. It has the advantages of reasonable structure, high efficiency, good cavitation performance, small vibration, low noise, stable and reliable operation, and convenient assembly and disassembly. As a fixed fire fighting equipment, diesel engine fire pump has been widely used in fire rescue.

     However, during the operation of the diesel engine fire pump, there will be blue smoke, which is usually caused by the burning of engine oil after the diesel engine has been used for a long time. With the increase of the blue smoke, the diesel engine should be repaired in time; There is moisture, or moisture leaks into the combustion chamber, causing changes in combustion, resulting in light blue smoke from the diesel engine fire pump.

Let's analyze it in detail:

1. The air filter is blocked, the air intake is not smooth or the oil level in the oil basin is too high, which reduces the amount of gas entering the cylinder and changes the normal ratio of the fuel mixture gas, resulting in incomplete combustion of fuel with more oil and less gas, causing exhaust leakage blue smoke.

2. Long-term low load, running below 40% power, the gap between the piston and the cylinder liner is too large, so that the lubricating oil in the oil pan is easy to escape into the combustion chamber, mix with the fuel mixture in the cylinder, and change the normal state of the mixture Ratio, incomplete combustion, causing blue smoke.

3. If too much lubricating oil is added to the oil pan, the lubricating oil will easily enter the combustion chamber during the operation of the diesel engine, and blue smoke will also be produced.

4. The piston ring is stuck or worn too much, and the elasticity is insufficient. When installing, the chamfering direction of the piston ring is reversed, so that the engine oil enters the combustion chamber, and the blue water vapor smoke is emitted after the lubricating oil is burned.

5. The vent hole between the crankcase breather and the atmosphere is blocked, resulting in high pressure of the crankcase exhaust gas, and the engine oil goes up to the combustion chamber to participate in the combustion, and blue smoke comes out.

6. The cylinder head gasket near the oil passage leading to the cylinder head is burned, the piston cylinder liner is worn, and the piston ring is matched, which will cause the lubricating oil to go up the combustion chamber and burn together with the fuel mixture.

     In short, the "blue smoke" of the diesel engine fire pump is actually a signal that your equipment needs to be cleaned, inspected, repaired or replaced. Because the diesel engine fire pump is a precision instrument, if there is a problem, you can contact the manufacturer or a professional technician to operate it, and do not do it blindly.