1. The diesel generator
set is started as a backup power
The
start-up speed of the diesel generator is rapid, generally only takes a few
seconds, with full load within 1min of emergency download, and full load within
about 5-10min of normal working state, and the steam power unit is generally
required from start to full load. 3-4h.
2. Short start-up time
Diesel
engine shutdown process is also very short, can frequently start and stop.
So
diesel generator sets are very suitable for use as emergency or backup power,
and many real estate, schools, hospitals, hotels and hotels are very suitable
for using diesel generators as backup power sources.
Nowadays,
the application field of the generator is becoming more and more extensive, and
its performance is also improved. We all know that the fuel injection nozzle is
one of the main equipment of the diesel generator and, after a period of time,
there is sometimes a burn-in failure. The following is a brief analysis of the
reason why the fuel injection nozzle of the diesel generator is burned.
1. Long idle operation
When
the diesel engine runs at idle speed for a long time, because of the low
temperature in the cylinder and the insufficient combustion of fuel, it is easy
to form carbon deposit on the combustion chamber and the fuel injection nozzle,
which makes the working conditions of the fuel injection nozzle deteriorate.
Especially in the cold winter climate conditions are more serious. Because of
the carbon deposition in the combustion chamber, the heat dissipation is slow,
which may cause the nozzle to block or drop oil.
2. Fuel injection time
is too late
If
the fuel injection advance angle is too small, the fuel injection time will be
too late and the fuel combustion situation will worsen. If the fuel is not
adjusted for a long time, the local high temperature will make the fuel
injection nozzle and heat insulation sheath burn and melt.
3. Fuel is not clean
Small
particles of impurity in the fuel will wear the needle valve and needle valve
body at the fuel injection nozzle, and the severe needle valve will be stuck in
the needle valve body. Needle valve lag, fuel can not be fixed, quantitative,
rapid injection into the combustion chamber, there will be oil dripping or oil
ejection phenomenon. The fuel atomization is not good, the burning speed is
decreased, and the combustion time at the fuel injection nozzle is prolonged,
which leads to the fuel injection nozzle and the heat insulation sheath burning
and melting.
4. Improper assembly
If
the nozzle insulation sheath is not cleaned and installed, the nozzle head and
the insulation sheath have a gap, so that the gas into the gap, resulting in
reduced heat insulation and heat dissipation, fuel injector and heat insulation
sheath burning melt. If the heat insulation sheath is installed too tight, the
injector will produce additional stress. Under the joint action of thermal
alternating load and fuel injection high pressure load, the nozzle head will
break and the needle valve will get stuck and dripping oil.
Note: We can provide standby generator for back up power. Brand includes Cummins, Perkins, Volvo, Deutz, Ricardo, Yuchai, SDEC, MTU, etc.
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