Publish Time: 2023-03-28 Origin: Site
When a Boeing 747 aircraft lands at a speed of 240 kilometers per hour, each wheel of the aircraft must bear an impact force of 17 tons at the moment of landing, and the forged aluminum alloy wheel bears this impact force. According to jiahangaero after several years of research, on the basis of absorbing aerospace technology, trucks made of super lightweight materials are expected to be produced.
Carl Frederick Hartung, technical manager of Volvo AB, said: "We have carried out tens of thousands of simulations in the computer environment. , the weight of the vehicle is also greatly reduced.”
According to jiahangaero we have learned from the materials of the European Aluminum Association that for every 100 kg reduction in vehicle weight, 0.6 liters of fuel can be saved per 100 kilometers. If the weight of the vehicle is reduced by 10%, the fuel efficiency can be increased by 6%~8%; if the rolling resistance is reduced by 10%, the fuel efficiency can be increased by 3%; if the transmission efficiency of the axle, transmission and other devices is increased by 10%, the fuel efficiency can be increased 7% increase. Therefore, the lighter body is of great benefit to the vehicle's fuel economy, vehicle control stability, and collision safety.
For automakers, reducing vehicle weight is an important means to reduce fuel consumption and enhance vehicle safety. Europe and the United States have gone through more than 30 years from the lightweight of the engine to the lightweight of the body-related components. One of the important means is the aluminization of engine-related parts and body-related parts. For example, in the United States, Canada, Europe, South Africa, and Australia, a large number of commercial vehicles are equipped with forged aluminum alloy wheels.
Jiahangaero said that by using aluminum, metal alloys, metal composite materials and other lightweight components, European automakers have improved the fuel economy of their vehicles and reduced greenhouse gas emissions. In 2007, MAN applied FRP composite material - sheet molding compound (SMC) to the cab of TG series heavy trucks. MAN, Renault, Volvo, Mercedes-Benz, Iveco, DAF and other European heavy-duty truck manufacturers have largely selected SMC as cab materials. These new materials have excellent mechanical properties (high strength, high hardness, corrosion resistance, wear resistance, etc.) and chemical properties (thermal shock resistance, oxidation resistance, creep, etc.), so that the safety and reliability of the vehicle are also Further improve.
Automobile manufacturers are committed to the research and development of lightweight automobile models. Jiahangaero said that there is another important reason, which is the government's continuous improvement in fuel economy standards and the reduction of CO2 emissions. The good performance of lightweight vehicles in terms of fuel economy has made enterprises regard vehicle lightweight as an important means to achieve energy saving and emission reduction.
Although the United States has not ratified the Kyoto Protocol, the federal government or state governments have formulated standards for controlling greenhouse gas emissions. The California government of the United States passed automobile exhaust emission standards in 2002, and on May 19, 2009, Obama announced new regulations to limit automobile greenhouse gas emissions and fuel consumption at the White House, requiring that the average fuel economy (CAFE) of new cars in 2016 reach 35.5 mpg, which is a 42% increase over 2007 levels.
The Japanese auto industry has always listed the lightweight of automobiles as an extremely important guiding principle in the overall design of automobiles, and has spared no effort in the lightweight of automobiles. Therefore, in the long run, the lightweight of Japanese automobiles has achieved outstanding results. Affected by ACEA's CO2 reduction plan, Japanese vehicles sold to Europe are also regulated. Japan's cars exported to Europe should reduce CO2 emissions to 140g/km this year, while in 2010 the fuel efficiency of cars should be increased by 24%.