Reasons and harm of diesel engraving black smoke

If the exhaust pipe is black smoke when the diesel engine is working, this is caused by the mixed diesel without a full full burning. Decomposing polymerization forming carbon cigarettes without completely burning diesel in combustion chambers, decomposing polymerization forming carbon smoke, and its carbon smoke is not pure carbon, but a diameter and small polymer. This solid-made carbon smoke-resistant fuel reaction rate is much slow, and it is not as black to exclude black. Therefore, it is a kind of fault when the diesel engine is working. This kind of fuel is not complete, which not only causes the fuel consumption of the diesel engine, and the power is lowered, but also form a large amount of carbon, the piston ring gas gate, and the combustion chamber will be caught in the case of the piston ring, and the valve seal is not strictly generated, but it is also The wear of the part will also be accelerated, thereby reducing the service life of the upper research and development.
1. Excessive oil supply is too large or the power diesel engine is overwhelmed.
2, the fuel injection advance angle is too large or too small.
3, injector atomization or drop of drip.
4, the oil pump column sleeve positioning screw is too long, blocking the oil on the reservoir, causing the return oil, causing an increase in oil supply, the diesel burning is not complete, there is a black smoke, and may also Causes the diesel engine cannot be turned off.
5, air filter or intake pipe clogging, so that the amount of air entering the cylinder is reduced, the diesel is not complete, and the exhaust is black. If the injector is normal, the cylinder is compressed in the cylinder, and the diesel engine is black smoke at high speed and low speed. When the air filter is removed, the black smoke will disappear immediately, then clean the air filter.
6, the gas phase is incorrect, the valve clearance is too large, the gas-free cams are severely worn, etc., the intake volume will be reduced, and the exhaust gas in the cylinder is not exhausted, resulting in the unplenish diesel burning, exhausting black smoke, dealing The gas supply mechanism conducts inspection and adjustment.
7, the compression in the cylinder, the compression resistance is reduced. This may be that the piston is too large, the piston ring is too large or the opening is in the same direction, resulting in a cylinder. It may also be that the valve seal is not strict. Poor compression in the cylinder, the compression is low, and the air can be reduced, and the diesel cannot completely burn, and black smoke.
8. Excessive combustion chamber and exhaust gas charcoal, the temperature of the combustion room is too high, the resistance of the exhaust gas increases, the intake is not sufficient, the exhaust is not exhausted, causing the burning incomplete, exhausting black smoke.
9. The diesel number used is not correct, the viscosity is too large, or the quality of the diesel is too bad, it is not easy to fire, so that the exhaust is black, and the combustion chamber and exhaust tube are also easy to produce carbon.
10, the diesel lubrication is poor, or the crank linkage is too large, the operation resistance is increased, so that the engine is overload, the diesel is not complete, and the exhaust is black.
11, the diesel operating temperature is too high, so that the inflation density is reduced, the air intake is insufficient, the diesel is not complete, and the exhaust is black.
12, the fuel injection pump plunger segment is severely worn, so that the oil pump oil supply pressure is slow, which affects normal oil supply time, and prolongs the fuel injection process, affecting the quality of fuel injection, this is the diesel exhaust Common faults for black smoke. Therefore, it should be done in time when the oil pump is severe.

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