Why Generator Power Shortage Occur
by Starlight Generator dieselgeneratortech1. The air filter is not
clean
If
the air filter is not clean, the resistance will increase, the air flow rate
will decrease, and the aeration efficiency will decrease, resulting in
insufficient engine power. Clean the diesel-air filter core or dust off the
paper filter as required, and replace the filter if necessary.
2. Exhaust pipe
obstruction
Blockage
of the exhaust pipe will cause the exhaust to be blocked and fuel efficiency
will be reduced. The power drops. Check for increased exhaust resistance due to
excessive carbon deposition in the exhaust pipe. General exhaust pressure
should not exceed 3.3 KPA, usually should always clear the exhaust pipe carbon
deposits.
3. The fuel supply
advance angle is too big or too small
Too
large or too small fuel supply advance will cause the fuel injection time of
the oil pump to be too early or too late (if the fuel injection time is too
early, the fuel will not burn enough, too late will emit white smoke, the fuel
will also burn insufficiently), so the combustion process is not in the best
condition. At this point, check whether the injector shaft coupling screw is
loose or, if loosened, re-adjust the fuel supply advance angle and tighten the
screw as required.
4. Piston and cylinder
sleeve strain
As
the piston and cylinder liner are badly pulled or worn out and the piston ring
binds the friction loss increases, the mechanical loss of the engine increases,
the compression ratio decreases, the ignition is difficult or the combustion is
not sufficient, the lower inflation increases and the air leakage becomes
serious. At this point, the cylinder liner, piston and piston ring should be
replaced.
5. Fuel system
malfunction
(1).
Fuel filter or pipeline into the air or obstruction, resulting in oil flow is
not smooth, lack of power, and even difficult to catch fire. The air entering
the pipeline should be cleared, diesel fuel filter should be cleaned and
replaced if necessary.
(2)
Fuel injection couple damage caused by oil leakage, bite death or poor
atomization, this time easy to lead to cylinder shortage, engine power
shortage. Clean, grind or replace in time.
(3)
Insufficient fuel supply of fuel injection pump will also cause power shortage,
should be checked, repaired or replaced in time, and the fuel supply of fuel
injection pump should be readjusted.
6. Cooling and
lubrication system malfunction
The
overheating of diesel engine is caused by the failure of cooling or lubricating
system. In this case, the water temperature and oil temperature are too high,
and it is easy to get stuck in the cylinder or piston ring. When the exhaust
temperature of the diesel engine increases, check the cooler and radiator to
remove the scale.
7. Cylinder head group
malfunction
(1)
Because of the leakage of exhaust gas, the air intake is insufficient or the
exhaust gas is mixed in the intake, which leads to the insufficient combustion
of fuel oil and the decrease of power. The fitting surface of valve and valve
seat should be repaired to improve its sealing and, if necessary, to replace
it.
(2)
The leakage of air from the interface between the cylinder head and the body
will cause the air in the cylinder block to enter the waterway or oil channel,
and cause the coolant to enter the engine body. If not found, it will lead to
"slippage" or black smoke, which will cause the engine to be
powerless. As the cylinder pad is damaged, there will be an air flow from the
cylinder pad when the speed changes, and there will be blisters in the gasket
when the engine is running. At this time, the cylinder head nut should be
tightened or the cylinder head gasket should be replaced in accordance with the
prescribed torque.
(3)
Incorrect valve clearance will cause air leakage, resulting in engine power
drop, or even difficult to catch fire. The valve clearance should be
readjusted.
(4)
Damage to the valve spring can cause difficulty in valve return, valve leakage,
and reduced gas compression ratio, resulting in insufficient engine power. The
damaged valve spring should be replaced in time.
(5)
Gas leakage or copper pad damage to the injector may lead to cylinder failure,
resulting in insufficient engine power. Repair should be removed and damaged
parts replaced. If the inlet temperature is too low, the heat loss will
increase.
8.
Surface wear of connecting rod bearing and crankshaft connecting rod journal
This
situation will be accompanied by abnormal sound and oil pressure drop, which is
caused by oil channel plugging, oil pump damage, oil filter plugging, or oil
hydraulic pressure is too low or even no oil. At this time, detachable diesel
engine side cover, check the big end of the connecting rod side and clearance,
to see whether the connecting rod head can move back and forth, if can not
move, then indicates that has gnawed, should overhaul or replace the connecting
rod bush.
For
a turbocharged diesel engine, in addition to the above reasons, the power of
the diesel engine can also be reduced if the bearing of the supercharger is
worn and the intake pipe of the press and turbine is blocked or leaked by dirt.
When the supercharger appears above, the bearing should be repaired or replaced
separately, the inlet pipe should be cleaned, the shell should be cleaned, the
impeller should be cleaned, and the joint nuts and clamps should be tightened.
Jiangsu Starlight Electricity Equipment Co.,Ltd is a diesel generator set manfacturer/factory in China. Can provide Cummins, Perkins, Volvo, Deutz, Ricardo, Yuchai, SDEC, Weichai, MTU and so on generating sets. Contact us by email: sales@dieselgeneratortech.com
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Created on Mar 28th 2019 03:24. Viewed 260 times.