Automotive component

Overview

CFRP (carbon fiber-reinforced plastic) products are also found in various automotive components such as hoods, rear spoilers and propeller shafts.

Applied locations and weight savings
Relative weight vs. a steel counterpart is shown in ( ). (Reference value)

Features

1. Light weight

Although the specific saving varies depending on the location, adopting CFRP is expected to roughly halve the weight compared to when a conventional material (steel) is used.

2. Improved crash safety

Toray's original technology mitigates the impact applied to the passenger/pedestrian upon crash.

3. Integrated design with fewer parts

CFRP allows for integrated design, which will likely reduce the number of parts and assembly man-hours.

4. Improved vibration resistance

Use of CFRP improves vibration damping property and natural vibration frequencies.

5. Durability

CFRP has excellent material fatigue characteristics (compared to steel or aluminum). It also has excellent corrosion resistance (against rust or deterioration), oil resistance and chemical resistance (except certain chemicals).

Example of product 1 CFRP hood

Toray's CFRP hood was the first of its kind adopted a mass-production car (Nissan Skyline GT-R). Cumulative unit sales amount to 2400 vehicles (over 2 years).

1. Light weight

30% weight reduction is possible compared to an aluminum counterpart.
(Steel hood 20 kg, aluminum hood approx. 12 kg, CFRP hood approx. 8 kg) (Reference values)

2. Use of Cutting-edge material

Using this cutting-edge material also makes aircraft and space satellites improves luxury feel and high-performance feel.

Example of product 2 CFRP propeller shaft

The Mitsubishi Pajero, Nissan Fairlady Z, Mazda RX-8 and Aston Martin DB9 are some of the models adopting CFRP propeller shafts, whose cumulative sales amount to approx. 750,000 units. (As of December 2006)

1. Light weight

The propeller shaft of high specific rigidity eliminates the need for intermediate bearings to reduce approx. 50% of the entire weight of the propeller shaft (when the joint interval is 1 m).

2. Vibration damping characteristics

Use of CFRP improves vibration damping property. Also drawing on its high specific rigidity, this propeller shaft is quieter and improves running performance.

3. Breakdown characteristics upon crash

Toray's original welding mechanism causes the CFRP propeller shaft to break at low load (approx. 7 tons, although the specific load varies depending on the specification) in the event of crash, thereby mitigating the impact applied to the passenger.