CN205273625U - Hybrid carbon -fibre composite passenger car engine bonnet - Google Patents

Abstract

The utility model relates to a mixed carbon fiber composite passenger car engine cover, which is suitable for passenger cars, especially for new energy pure electric and hybrid passenger cars. The carbon fiber composite passenger car hood is composed of an outer panel and an inner panel. The outer panel is molded by continuous carbon fiber fabric prepreg with different tows or the same tow. The inner panel is injection molded by long carbon fibers and resin. The inner panel and the outer panel Panel glued assembly assembly. The utility model is made of a composite material mixed with various carbon fiber grades, carbon fiber reinforcements of various carbon fiber tows, and various resin matrices. The light and high-strength materials greatly reduce the weight of the product, and the matrix has excellent corrosion resistance. It can be used to replace the existing metal hood and reduce the energy consumption of the car. The utility model has the advantages of corrosion resistance, fatigue resistance, noise reduction, heat insulation and the like.

Description

A hybrid carbon fiber composite passenger car hood

technical field

The utility model relates to a mixed carbon fiber composite passenger car engine cover, which is suitable for passenger cars, especially for new energy pure electric and hybrid passenger cars.

Background technique

At present, the hood of passenger cars is generally made of metal materials such as steel plates or aluminum alloy plates through sheet metal stamping and welding processes. The steel hood has the disadvantages of heavy weight and poor corrosion resistance; the aluminum alloy hood has the disadvantages of ineffective process weight reduction and high cost; the metal hood generally has the disadvantages of heavy weight and many parts. At present, high-end sports cars and racing cars in the domestic and foreign markets also have carbon fiber composite engine covers, which are expensive because they are made of a single continuous fiber prepreg.

Contents of the invention

The purpose of the utility model is to provide a lightweight and economical mixed carbon fiber composite material passenger car engine cover.

The technical scheme of the utility model is: the carbon fiber composite passenger car hood is composed of an outer panel and an inner panel, the outer panel is molded by continuous carbon fiber fabric prepreg of different tows or the same tow, and the inner panel is made of long carbon fibers and Resin injection molding, inner panel and outer panel glued assembly assembly.

The material matrix used in the outer plate is epoxy resin or modified epoxy resin or double horse resin, and the material matrix used in the inner plate is nylon.

The carbon fiber used in the outer panel is one or a mixture of continuous fibers of T300 or T700; the carbon fiber used in the inner panel is long fiber of T300 or T700.

The carbon fiber used in the outer plate is 3K, 12K, 24K, 48K or 50K tow or two or more of them.

The accessories connecting the engine hood of the carbon fiber composite passenger car to the body are pre-embedded and molded on the inner panel of the engine hood of the carbon fiber composite passenger car by LFT injection molding.

The utility model has the advantages that: the utility model is made of a composite material mixed with various carbon fiber grades, carbon fiber reinforcements of various carbon fiber tows, and various resin matrices. The light and high-strength materials greatly reduce the weight of the product. Coupled with the excellent corrosion resistance, fatigue resistance and noise reduction and heat insulation performance of the substrate, it can be used to replace the existing metal engine cover and reduce the energy consumption of the car. The hood made of composite materials using carbon fiber and its fabric as reinforcements can reduce the weight by more than 50% compared with the steel body, and has the advantages of corrosion resistance, fatigue resistance, noise reduction and heat insulation.

Description of drawings

Fig. 1 is the structural layout of the inner panel and the outer panel of the utility model passenger car.

detailed description

Below in conjunction with accompanying drawing and embodiment the utility model is further described.

The engine hood of a passenger car made of carbon fiber composite material is composed of an outer panel 1 and an inner panel 2. The outer panel 1 is molded by continuous carbon fiber fabric prepreg of different tows or the same tow, and the inner panel 2 is injection molded by long carbon fibers and resin. Inner panel and outer panel glued assembly assembly.

The passenger car engine cover mainly includes an outer panel 1, an inner panel 2 and an accessory 3, and its manufacturing process and method are as follows:

1) Outer panel 1: laminated panel structure, formed by molding process, the material is "surface layer T300 grade prepreg 4 + inner layer T700 grade or T300 grade prepreg 5";

2) Inner panel: variable thickness structure, injection molding by LFT process, material is "nylon 6 + long carbon fiber 7 + attachment 3";

3) Assembly: The inner and outer panels are formed by laminating and gluing at the periphery, and the assembly is "outer panel 1 + structural adhesive 8 + inner panel 2";

Claims (5)

1. the carbon-fibre composite passenger vehicle engine cover that a kind mixes, it is characterized in that, carbon-fibre composite passenger vehicle engine cover is made up of outside plate and interior plate, outside plate is by the continuous carbon fibre Fabric prereg compression molding of identical tow, interior plate adopts LFT technique injection molding, and interior plate and outside plate glued joint assembly.

2. a kind of carbon-fibre composite passenger vehicle engine cover mixed according to claim 1, it is characterised in that, the material matrix that described outside plate adopts is epoxy resin or modified epoxy or bismaleimide resin, and the material matrix that interior plate adopts is nylon.

3. a kind of carbon-fibre composite passenger vehicle engine cover mixed according to claim 1, it is characterised in that, the carbon fiber that described outside plate adopts is the one in the continuous fibre of T300 level or T700 level; The carbon fiber that interior plate adopts is T300 level or the macrofiber of T700 level.

4. a kind of carbon-fibre composite passenger vehicle engine cover mixed according to claim 1, it is characterised in that, the carbon fiber that described outside plate adopts is the tow of 3K, 12K, 24K, 48K or 50K.

5. a kind of carbon-fibre composite passenger vehicle engine cover mixed according to claim 1, it is characterized in that, the annex that carbon-fibre composite passenger vehicle engine cover is connected with vehicle body buries in advance and adopts LFT injection molding on the interior plate of carbon-fibre composite passenger vehicle engine cover.