First of all, let's look at the excavator in the plateau region prone to several problems which have

First, the excavator in the plateau region to start difficult

1, the best operating temperature of the battery in the range of 20 degrees to 40 degrees Celsius, with the reduction of the environment temperature, the output capacity of the battery is also decreased. When the temperature is lower than 30 DEG C, each cut 1 DEG C battery capacity is lowered by 1% ~ 1.5%, 0 DEG C, battery capacity usually only a maximum of 60% or so, which led directly to the battery voltage is decreased significantly, to provide enough power to reach the rated starting speed;

2, low temperature, the lubricating oil viscosity increases, the friction between the resistance increased, so that the engine start speed down;

3, high altitude area of thin air, air pressure to reduce, so that the end of the compression point pressure temperature, engine ignition delay increased, resulting in difficult to start;

4, low temperature conditions, the viscosity of the diesel increased, the surface tension increased, resulting in the atomization quality of fuel injection, and extended the ignition lag period.

Two, engine power, fuel consumption increased

With the altitude, air pressure drop, air density decreases, the air content in the air is also reduced, the engine is the driving force of the impact of the excavator is very prominent. Altitude elevation of 1000 meters, atmospheric pressure drop of about 11.5%, air density reduction of about 9%, the engine's power and torque decreased 8% ~ 13%, increased fuel consumption by 6% ~ 9%, the heat intensity increased 2% ~ 5%, so that the engine power, economy declined sharply.

Three, the engine easier to boil"

The boiling point of water decreases with the decrease of atmospheric pressure and altitude of 4500 meters, the boiling point of the measured water for 87 DEG C, is at 87 degrees will show "boil" phenomenon, and the normal work of the engine temperature at about 80 to 90 DEG.

Four, other faults

Of all types of machinery used materials, electrical components caused by impact, rubber sealing material easy to aging, brittle fracture and wear plateau low temperature, strong ultraviolet radiation, decreasing reliability; metal materials are cold brittle; sensor signal distortion. All these will affect the normal operation of the excavator.