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How to maintain LNG heavy truck in Winter


Antifreeze attention

1. Antifreeze should not be mixed. Different kinds of antifreezes have different freezing points due to different compositions, so they should be selected according to the temperature conditions of the vehicle driving environment. The antifreeze after mixing does not exert a good antifreeze effect, so as not to damage the vehicle.

2. Antifreeze should not be watered. The antifreeze after adding tap water will not only increase the freezing point, but also cause impurities in the tap water due to impurities in the tap water, which will eventually affect the cooling system performance, and will also cause the clinker damage of the cylinder liner.

3. Do not add concentrated antifreeze. The direct addition of high-purity concentrated antifreeze not only fails to meet the requirements of the engine cooling system for antifreeze, but also antifreeze deterioration, low temperature viscosity and high engine temperature. Therefore, when using concentrated antifreeze, it must be prepared as required, and it is forbidden to use it directly.

4. Perform freezing point detection on the antifreeze in the engine cooling system before entering the winter every year to prevent the antifreeze that has failed from affecting the normal operation of the engine.

5. Ensure that the antifreeze is stored in a cool place away from direct sunlight. At the same time, tighten the cover to prevent the antifreeze from coming into contact with the air to cause oxidation and affect the antifreeze performance.


LNG heavy truck oil attention

1. Do not use the engine oil of the diesel engine. Because the temperature of the gas truck combustion chamber is much higher than the use of gasoline and diesel, it causes the lubricant to age too fast, causing lubrication failure and early wear of components. The oil of the LNG truck is the same as that of the gasoline truck, but it is necessary to pay attention to the addition of the model.

2. In winter, we should choose engine oil such as 5W-30 or 10W-40. Generally, the smaller the number in front of W, the better the fluidity of the oil, and the 5W can be used at minus 30 degrees Celsius, and 10W can be at minus 25 degrees Celsius. Can better protect the engine.

3. Avoid changing the oil for cold cars. The oil is affected by the temperature, and the fluidity will be worse. In the case of changing the oil in the cold car, and the weather is cold, the old oil will not be clean. Therefore, you should get off the car properly before changing the oil.

The cleaning of the oil sump cannot be ignored.

4. The sludge in the oil sump will cause difficulty in engine lubrication, increase fuel consumption and even cause the piston ring to be stuck and pull the cylinder.

5. Excessive oil will cause the friction of each component to increase, and the carbon deposit will increase, which may even lead to the situation of pulling the cylinder. We usually add engine oil and reach half of the oil gauge. No need to add more.


Antifreeze glass attention

1. The anti-freeze performance of glass water is not good, which will cause the wiper spray pump and pipeline to freeze, and even crack the glass kettle. Therefore, when purchasing glass water, it is best to purchase low temperature performance lower than the lowest five degrees in the region to ensure that the glass water can be used normally at the lowest temperature in the region.

2. In the winter, the wind is heavy and the snow is too strong. If the light is too strong or too weak, the driving safety will be affected. If there is no anti-fog function, the windshield will become very fuzzy and more dangerous.


Maintenance and maintenance of LNG gas tanks

1. Make sure that the air inlet is cleaned every time the air is refilled, avoiding water and dirt entering the cylinder and causing blockage of the pipeline. After filling, fasten the dust cover of the filling seat and the return seat.

2. If the pipe or valve is frozen, use a clean, oil-free warm water or hot nitrogen to thaw, and then do not use a hammer to strike.

3. When the vehicle is parked overnight, the booster valve, the outlet valve, and the vent valve must be closed to start the vehicle to automatic flameout to avoid the blockage of the residual air caused by the low temperature at night.

4. The ice can not be frozen on the booster coil. If it is frozen or dirty, it must be cleaned up in time to ensure the smooth pressurization.

5. Before the vehicle is running, open the liquid outlet valve (closed in the clockwise direction and open in the counterclockwise direction). It should be operated slowly when it is opened. If the opening speed is too fast, the over-flow valve will automatically close and the cylinder will not be able to supply air. 

6. Check the tightness of the tightness of the gas cylinder line every week. Do not use hammers or other hard objects to strike the pipe or joint. Failure to do so may result in damage to the piping and damage to the seal.

7. Physical defense is also important.

8. Driving on ice and snow, smooth road surface will greatly reduce the friction of the tire. It is easy to produce folding and side slip during braking. Therefore, the snow chain is very important here. It should be slow after installing the snow chain. Drive to avoid emergency braking.


LNG Tractor 6x4 380hp 3

(Saic-Iveco Hongyan LNG tractor truck)

It is recommended that everyone prepare warm items in the car, travel safely, return safely, and the home is the ultimate port of dependence.

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