Reasons for Black Smoke in Diesel Generating Set

Diesel generator exhaust smoke black smoke is not fully burned. Not only reduces the engine power, high temperature decomposition of carbon emissions with the exhaust gas of a phenomenon. The phenomenon. Increased diesel consumption, and easy to form coke, shorten the engine life .......

The reasons are as follows:

First, the lack of fresh air in the cylinder

the reason:

1 air filter filter dust too much;

2 muffler rust, coke or oil.

3 into the exhaust valve clearance is too large. Camshaft gear and crankshaft timing gear relative position changes, so that the valve opening to reduce;

4 parts of the machine parts loose, wear, deformation. Valve opening and closing time is not correct.

Second, the end of the cylinder compression temperature and pressure drop Reason:

1 cylinder, piston ring wear too much. Hot car is easy to be top open, the piston ring device is not correct or loss of elasticity caused by cylinder leakage;

2 valve clearance is too small. Or valve ablation, coke caused by tight cylinder seal;

3 cylinder head with the body, the injector and the cylinder head contact surface leakage;

4 valve serious subsidence, piston and piston pin, piston pin and connecting rod head, connecting rod head and connecting rod journal clearance is too large, so that the combustion chamber volume increases, the compression ratio decreased.

Third, diesel atomization bad

the reason:

1 injector pressure adjustment is too low;

2 injector regulator spring break or card;

3 injector needle valve and seat carbon deposition. So that the injector drip. Needle valve stuck or wear too much;

4 fuel injection pump out of the valve with less pressure ring wear.

Fourth, the oil supply time and fuel supply is not correct

the reason:

1 oil supply time is too late;

2 starts early. When the oil supply time is too early;

3 injection pump plunger even after wear and tear to increase the use of fuel stroke;

4 fuel injection pump adjustment gear or rod stroke is too large, gas pressure and temperature is low. So that too much oil supply.

Diesel generator exhaust smoke black smoke is not fully burned. Not only reduces the engine power, high temperature decomposition of carbon emissions with the exhaust gas of a phenomenon. The phenomenon. Increased diesel consumption, and easy to form coke, shorten the engine life.