Tips For Using Diesel Genset in Plateau Area

by Generator D. Diesel Generator

Due to the low pressure, thin air, and less oxygen content of the plateau area, especially for the naturally aspirated diesel generator set, the combustion condition is poor because of the insufficient air intake, which cause the diesel generator set can't send the original nominal power. Although the basic structure of diesel genset is the same , the working ability is different because the calibration power of each type of diesel generator set is different. Then what should pay attention to in the process of using diesel generating set in plateau areas?

Diesel genset used in plateau region and plain region, to bring some changes in terms of performance and use of diesel engine, the following points for the use of china diesel generator user reference in plateau area.

1) due to the plateau area of low pressure, thin air, oxygen component is small, especially for naturally aspirated diesel engine, combustion condition, due to lack of air inflow to the nominal power of diesel engine can’t send the original provisions.Even if the diesel engine is the same basic structure, but various diesel engine calibration power is different, so they in the highlands of ability is not the same.Q – 1 type 6135 diesel engines, for example, the nominal power of 161.8 kW / 2200 r/min,, because of the large nominal power performance allowance is very small, when using a rise in plateau 1000 m, power by about 12%, so use for a long time should be according to the local sea dials in plateau height, reduced oil.- 11 and 6135 k type diesel engine, although the combustion process is the same, but because of the nominal power of only 117.7 kW / 2200 r/min, so performance with sufficient margin, so diesel engine itself has certain work ability of the plateau.

Given under the condition of the plateau, the tendency of ignition delay, in order to improve the working economy of the diesel engine, the general recommended naturally aspirated diesel engine fuel supply advance Angle should be properly in advance.

Due to either altitude increases, power performance, exhaust temperature rise, so the user should also consider when choosing diesel engine plateau work ability, strictly avoid overload operation.

According to the tests showed that in recent years, use of diesel engine on the plateau region, to adopt the method of exhaust gas turbo power compensation as the plateau.Through the exhaust gas turbo not only can make up for the inadequacy of plateau power, also can improve smoked, restore the dynamic performance and reduce the fuel consumption rate.

2) with the increase of sea dials, the environment temperature is lower than that in plain area, generally every 1000 m, decrease environmental temperature of about 0.6 ℃ or so, and because of the plateau thin air, therefore, the starting performance of diesel engine than plain area is poor.Users in the use, with low temperature starting corresponding auxiliary starting measures should be taken.

3) due to either altitude increases, the boiling point of water is reduced, at the same time, wind pressure and cooling air quality of cooling air is reduced, and the increase of the per kw heat in a unit time, so the cooling system of heat dissipation conditions worse than plain.In high sea dials should not be commonly use open cooling loop, closed cooling system pressure can be used to improve the plateau when using the boiling point of coolant.

For example, 6135Q -1type diesel engine, its nominal power is 161.8KW/2200r/min. Due to the calibration power is large, the performance margin is very small, as long as the use of diesel engine on the plateau is increased by 1000m, the power will be reduced by about 12%. According to the local elevation, it is necessary to reduce the oil supply properly. However, for the 6135K-11 type diesel engine, its nominal power is 117.7KW/220r/min. Such type of diesel engine is suitable to be used on the plateau because it has a sufficient performance margin.

Considering the tendency of ignition delay under the environmental conditions of plateau area, in order to improve the operating economy of diesel generator set, the naturally aspirated diesel engine fuel supply advance angle should be appropriately advanced. Due to the elevation, power dropping and exhaust temperature rise, so in the selection of diesel generating sets should also consider the diesel engine working ability in plateau area, and strictly avoid overload operation. According to the test for many years, it is proved that the method of adopting exhaust turbocharging can be used as power compensation for the diesel generator sets used in plateau area . Exhaust turbocharging can not only make up for plateau under-power, but also improve the smoke color, restore power performance and reduce the fuel consumption rate.

With the increase of altitude, the environment temperature is lower than that in plain area. In general, by increasing 1000m, the ambient temperature will drop about 0.6℃. Due to the rarefied air on the plateau, the starting performance of diesel generator set is worse than that of plain area. So when user use the gensets, the corresponding auxiliary starting measures should be taken with low temperature starting.

Due to the rising of elevation, the boiling point of water is reduced, meanwhile, the air pressure and quality of the cooling air is reduced, as well as the increase of heat dissipating capacity per KW in unit time, the cooling condition of the cooling system is poor than that of the plain. Generally, it is not appropriate to adopt the open cooling cycle at high altitude. However, the pressurized closed cooling system can be used to increase the boiling point of the coolant liquid in plateau.

The notes mentioned above are shared by Jiangsu Starlight Electricity Equipments Co.,Ltd. Hope it is useful for all users. Our company is the leading manufacturer of alternator and diesel generator in China. So far, Starlight has already established 64 sale and service departments all over the country. At any time, we can provide customers with design, supply, debugging, and maintenance one-stop service.

We supply multiple brands of generator set, such as: Cummins, Volvo, Deutz, Doosan Daewoo, MTU, Ricardo, Perkins, Shangchai, Weichai, Yuchai etc. The style of genset is varied, such as: container genset, trailer genset, portable trailer genset, soundproof genset, low noise genset, and silent genset, etc. Besides, we also supply design and construction of the noise reduction project up to the customer's requirements.