How does a diesel generator smoke?
That's because the black smoke from diesel engine exhaust is not fully ignited by diesel, and what kind of signs of carbon secretion with the exhaust gas are decomposed in tropical conditions. The black smoke from exhaust gas not only reduces engine power, but also increases diesel consumption. And easily become carbon deposits, reducing the life of the engine. The overall cause is as follows:
Exception one: The fresh atmosphere in the cylinder is less than the cause: (1) excessive dust accumulation in the air filter element; (2) muffler corrosion, carbon deposits or oil pollution; (3) the gap between the intake and exhaust valves is too poor, which makes the valve open (4) Loose, worn, deformed structural components of the distributor, the corresponding positions of the camshaft gears and the crankshaft gears are changed, and the valve opening and closing hours are not accurate.
Exception 2: Causes of temperature and pressure drop at the end of the cylinder contraction (1) Excessive wear of the cylinder barrel and piston ring, inaccurate piston ring assembly or loss of elasticity, resulting in air leakage in the cylinder; (2) The valve gap is too small, and it is easy to be caught during hot cars Ejection, or valve ablation, and carbon deposits make the cylinder tightly sealed; (3) Air leaks from the cylinder head and the body, the injector, and the joint surface of the cylinder head; (4) The valve suddenly sags, the piston and piston pin, piston pin And the small end of the connecting rod, the poor end of the connecting rod and the excessively low clearance of the connecting rod journal make the volume of the ignition chamber poor and the shrinkage ratio drop.
Exception three: Causes of poor diesel atomization: (1) Injector pressure adjustment is too low; (2) Injector pressure regulator spring is broken or issued; (3) Injector needle valve and valve seat carbon deposit, needle valve Stuck or worn too much; (4) The pressure relief ring of the injection valve of the injection pump is too worn, causing the injector to drip oil.
Abnormal four: The fuel supply time and fuel supply are inaccurate due to: (1) the fuel supply time is too late; (2) the gas pressure and temperature are low at the beginning of the start, and the fuel supply time is too early; (3) the fuel injection pump column After the plug parts are worn, they will be used in the poor fuel supply process; (4) The fuel injection pump moves the gear rod or the pull rod so poor that the fuel supply is excessive.
- In the power generation industry in China, we have been working hard, pursuing the concept of quality and service, and for the sake of customers, the full power generator chooses China and your generator is a professional housekeeper. At present, the diesel generator set maintenance market refers to damage inspection and routine maintenance. Two aspects: after maintenance refers to the failure of the diesel generator, there are problems with various accessories, such as replacing the generator or
- The diesel engine is working normally, but the generator fails to generate electricity or the voltage is very low. This may be due to the components associated with the generator, such as: the exciter is damaged, and the excitation voltage cannot be supplied. The excitation current is taken in. The rotor's dead center residual magnetism is weakened or declining. It will make the generator unable to generate electricity or the transmission voltage is extremely low. The right to respond is usually: use an appropriate DC voltage and directly connect to the excitation winding according to the polarity Magnetization. Carefully inspect the exciter and the cyclotron rectifier, find abnormal components or windings, and replace them for restoration. The generator's transmission voltage is unstable, and
- Blue smoke, fire reason: It means that the engine is burning oil. There are three types of reasons: first, the piston ring goes opposite, and the oil comes in the cylinder; the second is the oil level of the oil pan of the atmosphere filter, which leads the ring. The height of the groove; Third, the gap between the duct and the valve stem is too poor. Expulsion idea: Adjust the piston ring so that the opening teeth of the ring are staggered 120 degrees or 180 degrees, and the opening teeth of the ring should avoid the piston pin hole and the side pressure is poor. Adjust the height of the oil level of the oil filter of the atmosphere filter below the height of the annular groove; if the clearance between the duct and the valve stem is too poor, replace the component and reduce the clearance. The normal mutual assistance clearance between the two is 0.0
- Before starting, you should check whether the fuel volume of the fuel tank is rich, and there is no oil leakage in each oil pipe and the discussion area; whether the cooling system water is rich, clean and leak-free, and whether the fan belt is tight or not. The internal combustion engine and generator drive parts should be connected and trusted. The wires of the input line are well-insulated, complete and effective in all aspects. After starting, it should run at low speed for 3 to 5 minutes. After the temperature and oil pressure wheel are normal, the initial work can be done. The generator should be no different in the speed increase. Ring, the slip ring and commutator are well brushed, no jumping and sparking phenomenon. After the operation is stable and the frequency and voltage reach the rated value, power can be supplied to the outside.
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