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How does a diesel generator smoke?

发表时间:2017-08-18 Article source : Couch motor manufacturersPublished time: 2017-08-18

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.

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