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With the rise of domestic oil prices and the ever-increasing logistics costs, the survival of the logistics industry is deteriorating. Faced with such a severe situation, heavy truck users have put their hopes on clean energy products, LNG heavy trucks.
In the downturn of the industry, LNG heavy trucks have grown against the market and are increasingly favored by more and more users. At present, many transport companies and self-employed have purchased such products. So what's the usage of these users?
The reporter conducted a survey for this purpose.
The advantages and disadvantages also stand out
“Today, most users have expressed support and recognition for LNG models. However, in the course of use, vehicles have experienced a problem of poor stability.†Lei Jianguo, President of Xinjiang Dillinger Automotive Sales Service Group, told the reporter: “In Xinjiang, The environment of the mining area is very bad, and many LNG vehicles have frequent failures due to their inability to adapt to complex environments.The problems that often arise are concentrated in electrical controls such as high-voltage coils and relays. Although these parts are relatively mature products, many The quality of the manufacturer's products does not pass."
In this regard, a heavy truck dealer in Xinjiang, Chen Wei has the same view. “Based on our communication with users, we found that many manufacturers of LNG vehicles have quality problems. First, some mining vehicles not only have frequent engine and air supply system failures, but also have problems with the chassis of the vehicle because they do not adapt to the road conditions. The ignition coils of LNG vehicles are particularly fragile and there are often cases where vehicles cannot be started, said Chen Wei.
When reporters interviewed users, they learned that LNG heavy trucks still have the problem of lack of motivation, especially when climbing slopes, heavy loads, or driving on the plateau.
"The LNG engine is an ignition engine, and the compression ratio is different from that of a diesel engine, which has a certain impact on power." Chen Wei said that the user feels a slightly slower dynamic response when the vehicle accelerates. This is because the gas supply response is slower than that of diesel. The engine belongs to the problem of matching.
In addition, Mr. Liu, a LNG heavy truck user, also believes that heavy-duty vehicles will have potential safety hazards when driving on long downhill sections. “In the process of driving, LNG heavy trucks will work in the same way as diesel vehicles on flat roads, gentle slopes or uphill slopes, but they will obviously feel that the braking effect is not satisfactory when going downhill. If a heavy-duty vehicle is driving on a downhill road, it will be very By communicating with the dealers, we learned that it was caused by insufficient cylinder pressure in the gas engine, and that retarders could be added to assist braking. However, this would increase the cost of vehicles and increase the burden on users.†Mr. Liu Indicated.
Master Wang, who is engaged in the transportation of vegetables, has many complaints about the fact that the LNG vehicle's gas is volatile. “My transportation business is not a dedicated line, so the frequency of transportation is not fixed. After a few days of outage, you will find that the gas in the cylinder is more than half volatile. This will increase the cost. If LNG is wasted in volatilization, then The intention of buying LNG vehicles to save on transportation costs would be far behind. In that case, it would be better to buy diesel cars, at least for cheaper vehicles,†said Master Wang.
Although there are still many problems to be solved in LNG heavy trucks, the economic benefits obtained cannot be ignored.
It is understood that the price of LNG heavy trucks is 80,000 to 100,000 yuan more per truck than that of diesel heavy trucks, but the cost of car purchase can be recovered after one year of operation. After that, it will be 80,000 to 100,000 yuan more per year than diesel vehicles. Profit, which is also the main reason why many transport companies have purchased LNG heavy trucks. "Through our calculations, the use of LNG heavy trucks saves fuel costs by 35% to 40% over regular diesel vehicles, and saves about 100,000 to 150,000 yuan per year," said Chen Wei.
Users have the most say in the actual operating results. Master Li, who has 20 years of driving experience, introduced that during the operation, it was found through calculation that the same distance, LNG heavy truck 100km gas consumption and diesel heavy truck 100km fuel consumption, can save fuel costs up to 30%. "Each shipment is back and forth between 160 and 200 kilometers. LNG heavy trucks of the same type have a freight of 160 yuan less than diesel vehicles. Calculated at an average of 3 baht per day, you can save about 15,000 yuan a month. The total amount for a year is very substantial." The master said.
However, there is still a problem: Although LNG heavy trucks can save 30% to 40% of the cost, the service life of gas cylinders is very short. According to Lei Jianguo’s introduction, the gas tank is very vacuum. With the extension of time, once the gas tank leaks, it must be replaced. The cost of replacement is also huge. It is estimated that it needs 20,000 to 30,000 yuan. "Now the new LNG heavy truck is 80,000 to 100,000 yuan more expensive than a diesel vehicle, plus the cost of replacing gas cylinders. By doing so, the economy is less prominent." Lei Jianguo said.
Speed ​​up after-sales service system
While rapid development, it is of vital importance to improve the service system for LNG heavy trucks. At present, heavy truck manufacturers have made great efforts in building after-sales service system.
“Unlike LNG heavy trucks, diesel vehicles are now very popular, and the related supporting facilities and maintenance service outlets are also very complete. Even with the small maintenance stations on the roadside, the problem of vehicle breakdown can be solved. However, the professional comparison of LNG vehicles is also available. Currently, some manufacturers do not have tracking services and do not provide enough accessories. Therefore, the layout of the LNG heavy truck service system needs to be further strengthened, said Lei Jianguo.
In addition, Chen Wei also believes that LNG heavy truck manufacturers should continue to improve after-sales service. “Although heavy truck companies now have maintenance outlets throughout the country, there are not many LNG heavy truck repair capabilities, and problems need to be handled by the headquarters. Of course, service networks are currently under construction in many regions, including automakers, The joint after-sales service system jointly established by the engine plant and the gas supplier, etc.†said Chen Wei.
It is understood that in Xinjiang, many manufacturers have begun to establish service networks and build repair stations on the LNG heavy-duty trucks' main driving routes and deploy relevant personnel.
“We have established service authorizations with all supporting heavy truck companies, wherever the vehicles are sold, and where the services are. At the same time, we will set up permanent offices throughout the country to take charge of the service guarantee in this area and provide engineers with follow-up services. Unscheduled technical training was held in the local area to improve the regional service maintenance capabilities,†said the person in charge of Shangchai.
"Every car sold, we will track the user's service. Because the use of early training of users is very important, after all, the use of LNG vehicles and diesel cars are different." Shaanxi Automobile Marketing Department official told reporters: "The manufacturers The technicians will keep track of the service and explain to the user the correct operation mode and precautions of the LNG vehicle within 1 to 2 weeks after the user mentions the car. After that, the user will be asked by telephone and visit to ask what questions the user has encountered, and according to the corresponding Problems help users."
Less refueling outlets become a constraint
At present, the current situation of a small number of refueling stations and the lack of networks has seriously constrained the development of LNG heavy trucks. It is understood that except for the LNG refueling stations in the northwestern region and some southwestern regions, there are only a handful of LNG refueling stations in other regions.
"Xinjiang's natural gas resources are abundant, but LNG refueling stations are not perfect at present and cannot meet the demand for vehicle refueling. In addition, due to topographical reasons, the distance between Xinjiang is far away and vehicles may not add gas on the way. "Chen Wei told reporters:" If you assemble two gas tanks on LNG heavy trucks, you can drive about 700 to 1,000 kilometers, and you can say that there is no worries. However, if there is only one gas tank, it is very likely that there will be no gas filling stations in the middle. Broken gear."
Beiben officials also believe that the lack of LNG refueling stations may have a negative impact on users' business. He said that although LNG heavy-duty trucks have a long driving range of 900 kilometers or more, non-broad-haul long-distance transport is often faced with many unexpected situations. If LNG refueling stations cannot be found anytime, anywhere, transportation is at risk at any time. .
Liu Master, who is engaged in the coal transportation business, has encountered this situation. “Usually, I transport coal from Inner Mongolia to Tianjin, and there are filling stations along the way that can be refueled. The operation is still relatively good. However, once I temporarily received other business, I needed to change the route and encountered no gas in the operation. Situation, the last car parked on the high-speed, really called the day should not be, called the ground is inoperative.†Master Liu said.
In addition, the reporter also contacted the driver who had the intention to purchase LNG heavy trucks and thanked the master. He said that the biggest concern was that there were no refueling stations in many places after the LNG vehicle was bought. “If the work in this place is finished, if the car goes to another place and the filling station is not found, it will be inconvenient to use,†said Master Xie.
According to the reporter's understanding, compared to retail investors, transport companies are more willing to purchase natural gas heavy trucks because they are powerful and can build their own gas-filling equipment to meet the needs of LNG trucks.