In addition to the body, where else can the vehicle be lightweighted?

There is also the chassis, suspension is also the focus of lightweight, in order to pursue lightweight, the price of the car will generally use aluminum alloy subframe and suspension swing arm, and ordinary family cars are generally made of steel materials, this set can reduce a lot of weight.

In addition, in order to pursue the ultimate lightweight, some cars will make a fuss about reinforcements, such as aluminum alloy or even carbon fiber anti-roll bars and chassis stiffeners. In addition, the use of plastic fuel tanks and the elimination of spare tires can also reduce the weight of some vehicles.

Vehicle lightweight, in addition to the body, there are body panels, engine housings, chassis suspension systems and other parts can be used, lightweight technology and materials.

Theoretically, except for fuel oil, antifreeze liquid, and glass water, everything else can be lightweighted. For example, the engine, the transmission system, the wheels, etc., it's just that the cost is different. For example, glass.

There are three main ways to lightweight automobiles:

1. Application of high-strength and lightweight materials (means), such as high-strength steel, ultra-high-strength steel plate, aluminum alloy, magnesium alloy, engineering plastics and fiber-reinforced composite materials. From the perspective of technical paths, carbon fiber composite materials, aluminum-magnesium alloys, and advanced high-strength steel are the three major directions explored by car companies.

2. Optimize the lightweight design of the body structure (premise), and use structural analysis and CAD, CAE and other technologies to optimize the design of the structure, so as to reduce useless materials, reduce wall thickness, reduce the number of parts, etc., such as: modular integrated design, structural topology optimization.

3. The use of advanced manufacturing technology (guarantee), such as laser welding, roll forming (advanced molding technology to ensure the safety of the vehicle structure), high-strength steel hot forming, internal high pressure forming and other advanced manufacturing technology, structural adhesive bonding and dissimilar material riveting and other advanced connection technology.

Lightweight of automobiles,It is to reduce the curb weight of the car as much as possible under the premise of ensuring the strength and safety performance of the car, so as to improve the power of the car, reduce fuel consumption and reduce exhaust pollution. Experiments have shown that if the mass of the car is reduced by half, the fuel consumption will also be reduced by almost half. Due to the need for environmental protection and energy saving, the lightweight of automobiles has become the trend of automobile development in the world.

The above content refers to Encyclopedia - Automobile Lightweight.

There are three main ways for automobiles to achieve lightweight: 1. Apply high-strength and lightweight materials, such as high-strength steel, ultra-high-strength steel plates, aluminum alloys, magnesium alloys, engineering plastics and fiber-reinforced composite materials. 2. From the perspective of technical paths, carbon fiber composite materials, aluminum-magnesium alloys, and advanced high-strength steel are the three major directions explored by car companies.

3. It can also optimize the lightweight design of the body structure, use structural analysis and CAD, CAE and other technologies to optimize the design of the structure, so as to reduce useless materials, reduce wall thickness, reduce the number of parts, etc., and also use advanced manufacturing technology, such as laser tailored welding, roll forming, high-strength steel hot forming, internal high pressure forming and other advanced manufacturing technologies, structural adhesive bonding and dissimilar material riveting and other advanced connection technologies.

When it comes to the quality of the whole vehicle, it is divided into ballast distribution (vehicle driving dynamics). When a gasoline engine is switched to a diesel engine, the engine is often heavier (robust structure, turbocharger, charge air cooler, fuel injector, etc.), which leads to an increase in the axle load on the front axle and disrupts the balance of the vehicle. Therefore, the lightweight north of the car engine has become a problem that cannot be ignored in the development of the whole vehicle.

The way to lightweight engines.

The first is to increase the liter power in order to reduce the mass of the engine per unit power. State-of-the-art power density indicators are approaching 1 kg kW.

Taking the diesel engine of a car as an example, if the power of the car in the early 90s of the 20th century was only hovering at 20-30 kw l, then since the end of the 20th century, its upward trend can be described as "advancing by leaps and bounds". Today, the maximum burst pressure of the diesel engine has reached 20 MPa and the power per liter has reached 60 kWl.