Today, we Ji'nan gas turbine manufacturers to introduce a small series of diesel generating units which are the reasons for the smoke?
Diesel engine exhaust smoke black smoke diesel fuel is not fully combustion, in the case of high temperature decomposition of carbon emissions with a phenomenon. Black smoke exhaust, not only reduces the engine power, increase the consumption of diesel and easy formation of coke, shorten the service life of the engine. The reasons are as follows:
Diesel atomization bad
Reasons: (1) the injector pressure adjustment is too low; (2) injector adjusting pressure spring break or issuing; (3) injector needle valve and valve seat coke needle clamping stagnation or wear very; (4) the fuel pump out of the oil valve ring wear off very, the injector drop of oil.
Two. Temperature and pressure drop due to compression at the end of the cylinder.
(1) cylinder, piston ring wear too much, piston ring is not installed correctly or loses its elasticity caused by leakage in cylinder; (2) valve clearance is too small. Thecar is easily open the top, or valve ablation, carbon deposition caused by cylinder seals; (3) head and body, fuel injector and the cylinder head bonding surface leakage; (4) valve serious subsidence, piston and piston pin, piston pin and connecting rod small head, big end of the connecting rod and connecting rod journal clearance is too large, so that the combustion chamber volume increases, compression ratio decreased.
Three, the lack of fresh air in the cylinder
Reasons: (1) the air cleaner element product too much dust; (2) the muffler rust, coke or oil; (3) intake and exhaust valve clearance is too large, the valve opening decreases; (4) the orchestration of the body parts loosening, wear, deformation, gear, camshaft and crankshaft timing gear relative position change device, valve open and closing time is incorrect.
Four, supply time and fuel supply is not correct
The reason is: (1) oil too late; (2) starting early, low gas pressure and temperature, fuel injection time too early; (3) fuel injection pump plunger and barrel parts wear increase oil trip use; (4) fuel pump adjustment of tooth rod or lever travel that oil supply amount is too much.
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