1.
Fuel consumption rate: diesel generators of different brands have different
fuel consumption rates and different fuel consumption.
2.
The size of the electric load: the load is large and the fuel consumption is
larger. On the contrary, the load is smaller and the relative fuel consumption
is smaller.
In
order to facilitate the understanding of the approximate fuel consumption of
the generator set and calculate the use cost of the generator set, we will
estimate the approximate fuel consumption of the generator set under full load
(30kw-500kw) for your reference. The list is as follows:
30kw
fuel consumption = 6.3 kg (kg) = 7.8 liters (L)
45kw
fuel consumption = 9.45 kg (kg) = 11.84 liters (L)
50kw
fuel consumption = 10.5 kg (kg) = 13.1 liters (L)
75kw
fuel consumption = 15.7 kg (kg) = 19.7 liters (L)
100kw
fuel consumption = 21 kg (kg) = 26.25 liters (L)
150kw
fuel consumption = 31.5 kg (kg) = 39.4 liters (L)
200kw
fuel consumption = 40 kg (kg) = 50 liters (L)
250kw
fuel consumption = 52.5 kg (kg) = 65.6 liters (L)
300kw
fuel consumption = 63 kg (kg) = 78.75 liters (L)
350kw
fuel consumption = 73.5 kg (kg) = 91.8 liters (L)
400kw
fuel consumption = 84.0 kg (kg) = 105 liters (L)
450kw
fuel consumption = 94.5 kg (kg) = 118 liters (L)
500kw
fuel consumption = 105 kg (kg) = 131.2 liters (L)
The
specific calculation of the fuel consumption of diesel generators is as
follows:
One
liter of diesel is about 0.84-0.86 kg.
Most
of the parameters used by manufacturers of diesel generators use G/KW.H, which
means how many grams (G) of oil is consumed by one kWh of generators, and then
the unit is replaced by liters (L) to know you. Hourly fuel cost. In general,
the diesel generator set is 0.21kg/kWh.
The
relationship between fuel consumption and load of diesel generator sets
The
fuel consumption of diesel generator sets has always been the focus of users.
Fuel consumption is generally related to two aspects, one is the unit's own
fuel consumption rate, and the other is the size of the load. Many users think
that the fuel consumption of the unit is directly proportional to the load. Is
this correct?
Generally
speaking, people think that the same type of diesel generator sets of the same
brand have a larger load and consume more fuel. On the contrary, the load is
smaller and the relative fuel consumption is smaller. Under normal
circumstances, this statement is correct, but in special cases It’s a different
matter.
When
the load of the diesel generator set is 80% of the rated load, the fuel
consumption is the lowest, and one liter of oil is 3.5 degrees. If the load is
increased, the fuel consumption will increase. This is what people often say is
that the fuel consumption of the diesel generator set is proportional to the
load. However, if the load is less than 20%, it will have an impact on the
diesel generator set, not only the unit fuel consumption will be greatly
increased, but even the generator set will be damaged.
Therefore,
the relationship between fuel consumption and load is not absolute. To reduce
the fuel consumption of diesel generator sets, the unit can be operated at
about 80% of the rated load. For a long time, low-load operation will increase
fuel consumption and even damage the unit. It is very important to correctly
consider the relationship between fuel consumption and load of diesel generator
sets.
How
to reduce the fuel consumption of diesel generator sets?
The
diesel engine generator diesel engine compression system is seriously worn, the
piston assembly error, the seals of the joints of the body are damaged, and the
side wall damage of the oil casing is the cause of excessive oil consumption.
So how do you reduce the fuel consumption of the oil for these problems?
1.
When the engine oil consumption is too much, first check whether there is oil
leakage at the joint between the body and the gear chamber cover, the large
plate on the side of the row wheel, the back cover, and the cover. If oil
leakage occurs, it should be observed that the gaskets at each joint are
complete and the damaged gaskets should be replaced. If the gasket is complete,
check whether the connecting screws of each part are loose. Adjust the loose
bolts to the specified torque with a wrench. If the above parts are normal and
the oil leakage is in the rack position, the oil casing should be inspected.
The main inspection part is at the front end of the oil shell side on the same
side as the row wheel. This is often because the machine screws are loose. The
wheel pulls under the triangle belt and protects the frame angle iron of the
oil casing from long-term rubbing, and the oil casing is worn through to form a
gap to cause oil leakage.
2.
The "normal wear" caused by the long-term use of the diesel engine of
the diesel generator set, or the "abnormal wear" caused by improper
maintenance, will cause the longitudinal direction of the cylinder liner of the
diesel engine to form a longitudinal line, the cylinder diameter and the piston
side clearance exceed the specified value, so that the piston The supporting
force of the ring is correspondingly reduced, and the oil scraping phenomenon
is unsatisfactory; or because the inner ring twisting spring in the oil ring is
broken at the opening position of the oil ring, the scraping oil is not clean
and participates in combustion, causing serious oil consumption symptoms, which
is also One of the reasons for the excessive fuel consumption is that the
diesel engine is difficult to start, the exhaust pipe has obvious blue smoke,
and the respirator is seriously injected. There is also a situation where the
"piston" should be upward. On one side, the combustion chamber is
inverted when assembled due to the reverse direction. Although it does not
affect the starting of the diesel engine, the loss of oil can be quite serious,
and the daily fuel consumption is about 0.5 kg.
3.
In addition, severe wear of the valve guides can also lead to an increase in
fuel consumption of the diesel generator set. This situation, although less
encountered, is one of the reasons why it cannot be underestimated.
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