1. Oil Filter
Oil
in use will be mixed with some impurity particles, such as particles produced
by friction, debris left over by unclean parts, and early oxidized particles
produced at high temperatures in individual places. These particles include
iron pins, sand grains, Rubber particles, mixed in oil will cause friction side
effects, damage and even burning tile, reduce service life and reliability.
Diesel engine oil filter must be used, oil filter mainly with paper filter,
filter paper to filter out the impurities in the oil. Some filters can be
divided into coarse filter and fine filter, the particles of 0.040mm can be
filtered off 100%, the particles of 0.030-0.040mm can be filtered off 99%, if
the concentration of particles below 0.030mm is too large, it will cause oil
deterioration; You can filter out 100 particles above 0.010mm and 94.2% above
0.005mm. If you use a low-quality oil filter, if you use a shoddy oil filter,
in case of plugging or increasing resistance, the oil pressure of the main oil
channel will decrease, resulting in insufficient oil content in the main
bearing. Leading to serious consequences.
The
basic requirement of the oil filter is that the filter effect is good and the
resistance is small, and the two are contradictory. In order that the oil can
be filtered well without causing excessive resistance, several filters are
installed in the lubricating system of the general diesel engine, each in
series with the main oil channel (all the circulating oil of the diesel engine
passes through it, This filter is called full flow and parallel (this filter is
called shunt).
Oil
filter can be divided into filter type and centrifugal type according to filter
mode. In addition, magnetic core metal wear debris as an auxiliary filter
measures. The filter type can be divided into fine filter, coarse filter and
collecting filter according to the different filter ability. The filter oil
filter can be divided into screen type, scraper type, wire wound type, sawdust
filter type, paper filter core type and compound type according to their
different structure.
2. Fuel Filter
The
diesel filter mainly filters out the dust and impurities that enter the fuel
pump, because these dust and impurities can damage the fuel pump and injector,
so the user must choose the high quality diesel filter.
3. Coolant Clarifier
The
coolant should be filtered because it contains sediment, dust, oil and scale,
processed iron rust and precipitation, precipitated protective agents and
spoilt gasket debris, which are stored in the engine. Especially after storage
for a certain period of time, (the supplementary water also contains dust,
sediment, etc.) will hinder the thermostat work, pollute and clog the water
pipe in the oil cooler, block the radiator (water tank), hose, etc. Cooling
water channels in pipes and cylinder blocks.
Metal
scraps, such as sediment, may cause wear on the impeller and shaft of the pump,
damage to the sealing ring of the cylinder liner, wear of the seal on the end
surface of the pump and the thermostat, these particles and metal chips,
sealing debris, etc., if they are plugged into the thermostat, The thermostat
can no longer be turned on and off, so standard water filters must be used and
replaced regularly.
4. Air Filter
Cummins
diesel engine (generator set) uses the ordinary light single dry air filter,
the high quality standard filter is made of specially treated filter paper, can
be replaced, the efficiency can reach 99.5%. Fresh air enters the air filter
from around the air filter, and the air required for the combustion of a diesel
engine also depends on the air filter. Therefore, the smaller the resistance of
the air filter, the better. After the air filter is used for a certain period
of time, the filter core will become dirty. If the resistance increases beyond
the specified value, the diesel engine will not have enough air for combustion,
which will result in smoke, insufficient power and so on. The air resistance
indicator installed on the inlet can indicate whether the air resistance is
normal. If the resistance exceeds the specified value, the indicator changes
from normal green to abnormal red, and the filter should be replaced. Then
click on the end of the indicator to restore green.
5. Lubricant
The
use of high quality oil, with a suitable oil replacement and oil filter
replacement cycle, is an important factor in prolonging the service life of a
diesel engine. Cummins and Rolls-Royce do not recommend any particular class of
engine oil.
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