What breakthroughs have been made in the lightweight of automobiles with materials such as carbon fiber composites, magnesium alloys, and plastics?

Due to the needs of environmental protection and energy saving, the lightweight of automobiles has become the trend of the world's automobile development.

Automotive lightweighting refers to the optimization of the design of automotive products under the prerequisite of ensuring automotive safety, or the use of new materials to reduce the weight of automotive products as much as possible on the premise of ensuring the overall performance of the vehicle, so as to achieve weight reduction and reduction. Comprehensive indicators of energy consumption, environmental protection and safety.

According to experimental studies, every 10% reduction in vehicle quality can lead to a 8% reduction in fuel consumption and a 4% reduction in pollutant emissions. Therefore, lightweight vehicles can take into account the dual goals of improving fuel economy and environmental protection.

There are three main ways to reduce the weight of automobiles: optimization of structural design, the use of lightweight materials, and advanced manufacturing processes. Among them, the main measure of automobile lightweight is to use lightweight materials. The main materials currently used in automobile lightweighting are: high-strength steel, magnesium alloy, carbon fiber composite and plastic.

Carbon fiber reinforced thermoplastic composite car chassis

The National Composite Materials Research Center of Nagoya University has successfully developed the world's first carbon fiber reinforced thermoplastic composite automotive chassis. NEDO aims to combine the technical results published this time with the research and development of other structural materials, research diversified material technologies, integrate dissimilar materials, and promote the lightweight development of automobiles.

Use its carbon fiber sheet molding material to make the rear cabin

The new Toyota Prius plug-in hybrid uses its carbon fiber sheet molding material to make the door frame of the rear door. Sheet molding material is a thermosetting chopped fiber composite material. The SMC developed by MRC is an intermediate product of carbon fiber reinforced plastic and also a carbon fiber sheet raw material. The mechanical properties of the SMC are relatively evenly distributed. Engineers can use current component design techniques to use this type of carbon fiber materials to make lighter and stronger components. The product can greatly reduce the weight of the car body, has excellent component performance, and excellent formability. It can produce components with complex shapes and its production efficiency is sufficient to manufacture components for mass-produced models.

Porsche launches all-carbon fiber plastic wheels

Porsche has introduced a pure carbon fiber reinforced plastic wheel. The center of the wheel is made of interwoven carbon fiber fabric, which is cut and assembled by more than 200 individual parts. The composite wheel weighs 19 pounds, which is 20% lighter than the equivalent aluminum alloy wheel, but Porsche also said that the wheel's toughness is also 20% higher than the equivalent wheel. The combination of high strength and light weight can greatly improve the performance of the car body, allowing better acceleration and braking performance.

40% reduction in weight of plastic tailgate

The internal structure of the eQ1 electric vehicle tailgate panel launched by the car manufacturer Chery uses engineering polyolefin materials from Saudi Basic Industries Corporation (SABIC) to achieve a weight reduction of 40%. SABIC’s STAMAX resin is long glass fiber filled polypropylene (LGFPP). Compared with steel, this low-density material can reduce the weight of the inner tailgate while achieving the required rigidity.

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