What should I pay attention to when the construction of the excavator plateau should？

Driven by the development of the West and the strategy of all the way, more and more projects are settled to the Gahai Duan area in the West. More and more construction machinery gathers here. At this time The equipment reaches a high altitude area. Analysis of the reason, and then apply the correct response solution, so that the excavator machine can be flat in the plateau area.

First of all, let's take a look at several problems that are prone to construction in the plateau area?

1. The excavator is difficult to start in the plateau area

1. The working temperature of the battery is in the range of 20 ° C to 40 ° C. As the environmental temperature decreases, the output capacity of the battery also decreases accordingly. When the temperature is lower than 30 ° C, the battery capacity is reduced by 1%to 1.5%every 1 ° C. At 0 ° C, the battery capacity is usually only about 60%of the*value. The power reaches the rated startup speed;

2. At low temperature, the oil viscosity of lubricating machines increases, and the resistance between the friction parts increases to reduce the speed of the engine.

3. High -altitude areas are thin, and the air pressure is reduced, which makes the pressure temperature at the end of the compression end point.

4. Under low temperature conditions, the viscosity of diesel has increased, and the surface tension increases, resulting in the deterioration of the atomization quality of the fuel injection, extending the late fire stagnation.

Second, the motor power of the excavator decreases, the fuel consumption increases

As the altitude rises, the air pressure decreases, the air density decreases, the oxygen content in the air is decreased, and the impact on the impact on the excavator with the power of the diesel engine is very prominent. Each altitude increases by 1,000 meters, the atmospheric pressure drops by about 11.5%, the air density decreases by about 9%, the power and torque of the internal combustion engine drop by 8%to 13%, the fuel consumption rises by 6%to 9%, the heat intensity increases by 2%to 5%. As a result, the power and economy of the engine greatly decreased significantly.

Third, the excavator engine is easy to "open the pot"

The boiling point of the water decreases with the decrease in the atmospheric pressure. The altitude is 4500 meters. The boiling point of the measured water is 87 ° C. It will show a "open pot" phenomenon at 87 degrees, and the normal operating temperature of the engine is about 80-90 ° C.

Fourth, the excavator other faults

Low -temperature and strong ultraviolet radiation have influence on various mechanical materials and electrical components. The rubber sealing materials are prone to aging, crispy, wear, and decreased reliability; metal materials have low temperature and cold crispy problems; signals measured by sensors. These will affect the normal work of the excavator.

So how should we solve some problems?

1. The life of the excavator operating in the plateau for a long time will be shorter than the plain. The frequency of changing the battery should be appropriately accelerated;

2. You can consider using multi-level oil with better low temperature performance, such as 10W30 level, Sanyi pure motor oil CH-4 is your choice;

3. Keep the heat sink clean, and should be cleaned regularly to reduce the air intake temperature and increase the density. It can greatly increase the power of the engine and improve the heat load.*Burning temperature, circulation average temperature, exhaust temperature, cylinder head temperature Will decrease significantly;

4. Adjust the early corner of the fuel supply, which will improve the smoke color of the engine. However, due to the low oxygen content in the plateau area, the burning of diesel is not sufficient, and there will still be a small amount of black smoke.

5. Replace the plateau water tank cover to improve the boiling point of cooling water.

6. Shorten the maintenance cycle and shorten from 250 hours to 200 hours. Please use Sanyi pure accessories to ensure the safety of your engine. You should replace it when the engine is hot.

7, diligent inspection of the intake system, low air pressure in the plateau area, and blocking air intake channels to make the air intake smaller, which will cause the engine power to be severely reduced;

8. Standardize operations. Correctly warm up: first run at low speed for 3 to 5 minutes, the temperature of the waiter rises, the liquidity is better, the turbocharger is fully lubricated, and then the speed and load operation should be increased. Reduce the load and run at idle speed for 3 to 5 minutes. When the temperature of the coolant drops below 60 ° C, stop the driver to prevent damage to the occurrence and bearings. In addition, the diesel engine cannot operate for a long time, which will increase fuel consumption and exacerbate the wear of the machine, and the supercharger will also be poorly lubricated due to the low lubrication pressure, resulting in early damage. Therefore, the time of idle operation should not exceed 10 minutes.

9. The equipment enters the plateau construction. Because the mobility is inevitable to generate the power decrease, the power of the main pump should be appropriately reduced to prevent the phenomenon of cars.

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