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The “low-carbon†economy is now the hottest topic in the world. With the widespread adoption of new energy vehicles such as pure electric, hybrid and fuel cells and the implementation of subsidies for new energy vehicles in the Shanghai World Expo, the automotive industry has also ignited a “low†Carbon" economic boom. However, when everyone pays attention to the low-carbon economy of the automobile industry, the first thing that comes to mind is the new energy vehicle. In fact, as long as the technology that is conducive to reducing emissions and pollution can be called low-carbon technology. Today, we invited the Vice President of Nanjing Advanced Composites Industrialization Promotion Association, the Distinguished Professor of Ford Motor Company of the United States, and Professor Tao Jie, Director of the Institute of Advanced Materials and Forming Technology of Nanjing University of Aeronautics and Astronautics to talk about another kind of the automotive industry. Low carbon" method for lightweight design and materials for automobiles.
Reduced vehicle weight is conducive to energy saving and emission reduction
While the automobile industry is booming around the world, it also brings about two serious negative impacts of environmental pollution and energy shortage. According to the survey, about 35% of petroleum consumer goods are used as fuel for automobiles, and it can be seen that automobile fuel consumption accounts for a large proportion. Exhaust emissions from automobiles pollute the atmosphere. According to statistics, the CO2 emitted by automobiles accounts for more than 20% of the total CO2 emissions of human activities in the world. Therefore, it is necessary to greatly reduce the CO2 emissions of automobiles. Studies have shown that for every 10% reduction in vehicle weight, fuel consumption can be reduced by 6% to 8%, and emissions are reduced by 5% to 6%. For every 1L reduction in fuel consumption, CO2 emissions can be reduced by 2.45kg. The reduction in fuel consumption is not only conducive to energy conservation, but also effectively reduces pollutant emissions. It can be seen that the lightweight of automobiles is an important means and method to achieve energy conservation and emission reduction.
Weight is guaranteed to reduce performance
Automobile lightweighting mainly refers to the use of modern design methods and effective means to optimize the design of automotive products, or use new materials to ensure the overall performance of the vehicle, to reduce the weight of the car products as much as possible, in order to achieve weight loss, consumption reduction, Comprehensive indicators of environmental protection and safety.
Car lightweighting is by no means simply miniaturizing it. First of all, the original performance of the car should be kept unaffected. It is necessary to reduce the weight of the car itself, and to ensure the safety, crashworthiness, shock resistance and comfort of the car. At the same time, the cost of the car itself is not improved. In order to avoid economic pressure on customers. Automotive lightweighting technologies include the rational design of automotive structures and the use of lightweight materials. On the one hand, the lightweight of automobiles is closely related to materials; on the other hand, optimizing the design of automobile structures is also an effective way to achieve lightweight vehicles.
Aluminum alloy and resin matrix composites are widely used in automotive lightweighting
The use of lightweight materials is one of the main ways to achieve lightweight vehicles. The increasing use of lightweight materials is the main manifestation of the continuous development of automotive lightweight technology. Lightweight materials mainly include medium and high strength steels and advanced high strength steels, aluminum alloys, plastics, composite materials, magnesium alloys and other materials. Among them, the research and use of aluminum alloy and resin-based composite materials are growing at a faster rate.