Semi-trailers such as vans, tanks, flats and containers have always been important tools for road transport, but they are also known as "oil tigers". The fuel consumption per 100 kilometers of a heavy steel semi-trailer when empty is usually as high as 25 liters. "As long as the car is lighter, fuel consumption can be reduced." Yang Yucheng told reporters that aluminum alloy materials are much lighter than steel, and aluminum semi-trailers have replaced steel semi-trailers as an important way to achieve lightweighting internationally. Under the same performance conditions, the weight of the aluminum semi-trailer is 35% to 40% lower than that of the steel semi-trailer.
It is reported that the penetration rate of aluminum semi-trailers in developed countries such as Europe and the United States has reached more than 70%. According to statistics from Yantai, Shandong, about 9,000 semi-trailers are operating in Yantai. According to estimates, if the proportion of aluminum semi-trailer Yantai aluminum can reach the same level as developed countries, that is 6300 vehicles, the annual fuel savings of about 30,000 tons, reducing carbon dioxide emissions of about 80,000 tons.
All aluminum vehicles can bring direct economic benefits to users. A vehicle carrying more than 3,4 tons of cargo will be calculated at a cost of 0.5 yuan per ton-km and an annual operation of 200,000 km. Each vehicle can increase revenue by 340,000 yuan per year. It also saves about 45,000 liters of oil during the life cycle, reducing 110 tons of CO2 emissions. At present, China’s heavy-duty semi-trailer ownership is approximately 1.1 million. Calculated at 80% of this figure, all lightweight aluminum trucks with a weight reduction of 3.4 tons and annual mileage of 150,000 kilometers will be used to reduce the weight of semi-trailers. 5.31 million tons of oil. According to the use period of 800,000 km, it can save about 28.35 million tons of oil and reduce CO2 emissions by more than 90 million tons.
However, many transport users still do not realize the economy of this technology, which affects the promotion and application of aluminum semi-trailers. “Yang Yucheng believes that aluminum semi-trailers are energy-saving products. We hope relevant departments can refer to the subsidy measures for new energy vehicles and energy-saving vehicles as soon as possible to pilot and implement the purchase subsidy policy for aluminum semi-trailers, reduce the investment of one-time car buyers, and accelerate the realization of Aluminum semi-trailer promotion and application.
High cost, large investment in one-time purchase, and lack of policy support are the main reasons why aluminum semi-trailers are currently difficult to promote. Due to high aluminum prices and low production scale, the production cost of aluminum semi-trailers is more than twice that of steel semi-trailers. Taking the 14.6-meter van-type semitrailer as an example, it is currently possible to replace 6-ton steel with 3 tons of aluminum, and the material cost is only about 80,000 yuan higher. The market price of aluminum semi-trailers is usually higher than that of steel semi-trailers. 100,000 yuan.
Due to the competitive incentives and meager profits of China's transportation industry, higher one-off investment has inhibited the transportation users' demand for aluminum semi-trailers. However, in fact, the fuel-saving performance of aluminum semi-trailers can fully compensate users' acquisition costs in the future.
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