Diesel generators black smoke What are the reasons?
Release date: 2016/7/7 8:47:09 Views:970
Diesel engine exhaust black smoke from diesel combustion is not sufficient, at high temperatures the decomposition of a phenomenon with carbonaceous gas discharged. Exhaust black smoke, not only reduces engine power, increased diesel consumption, and easy to form coke, shorten engine life. The following reasons:
First, the lack of fresh air within the cylinder
Cause: (1) air filter too much dust; (2) muffler rust, coke or oil; (3) intake and exhaust valve clearance is too large, so that the valve opening degree is reduced; (4) adapter body loose parts, wear, deformation, camshaft and crankshaft timing gear relative positions of the gear change, the valve opening and closing time is incorrect.
Second, the end of the compression cylinder temperature and pressure drop reasons
(1) cylinder, piston ring wear excessive piston ring is not installed properly or loss of elasticity caused by air leakage; (2) valve clearance is too small, hot car easily top open or valve ablation, resulting in coke cylinder Mifengbuyan; (3) the cylinder head and the body, fuel injector and cylinder head joints leak; (4) severe subsidence valve, piston and piston pin, piston pin and connecting rod small head, connecting rod and the connecting rod journal gap is too large, the combustion chamber volume increases, the compression ratio decreases.
Third, poor atomization of diesel
Cause: (1) to adjust the injection pressure is too low; (2) injector pressure regulator spring break or issuer; (3) injector needle and seat coke, needle or wear off even catching; (4 ) fuel injection pump oil valve vacuum ring wear off even make injectors drop of oil.
Fourth, the injection timing and fuel supply amount is incorrect
The reason is: (1) oil too late; the lower (2) the initial start-up, the gas pressure and temperature, oil too early; (3) fuel pump Plunger stroke oil increased wear after use; (4) adjusting the fuel injection pump gear lever or lever stroke is too large, resulting in excessive fuel supply.
First, the lack of fresh air within the cylinder
Cause: (1) air filter too much dust; (2) muffler rust, coke or oil; (3) intake and exhaust valve clearance is too large, so that the valve opening degree is reduced; (4) adapter body loose parts, wear, deformation, camshaft and crankshaft timing gear relative positions of the gear change, the valve opening and closing time is incorrect.
Second, the end of the compression cylinder temperature and pressure drop reasons
(1) cylinder, piston ring wear excessive piston ring is not installed properly or loss of elasticity caused by air leakage; (2) valve clearance is too small, hot car easily top open or valve ablation, resulting in coke cylinder Mifengbuyan; (3) the cylinder head and the body, fuel injector and cylinder head joints leak; (4) severe subsidence valve, piston and piston pin, piston pin and connecting rod small head, connecting rod and the connecting rod journal gap is too large, the combustion chamber volume increases, the compression ratio decreases.
Third, poor atomization of diesel
Cause: (1) to adjust the injection pressure is too low; (2) injector pressure regulator spring break or issuer; (3) injector needle and seat coke, needle or wear off even catching; (4 ) fuel injection pump oil valve vacuum ring wear off even make injectors drop of oil.
Fourth, the injection timing and fuel supply amount is incorrect
The reason is: (1) oil too late; the lower (2) the initial start-up, the gas pressure and temperature, oil too early; (3) fuel pump Plunger stroke oil increased wear after use; (4) adjusting the fuel injection pump gear lever or lever stroke is too large, resulting in excessive fuel supply.
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