When the car was first invented, the car's power was in […]
When the car was first invented, the car's power was insufficient, the transmission system design was not perfect, so the speed was very slow, the structure was very simple, most cars did not have a braking system; others were equipped with a braking system,drum brake these braking systems were The handbrake directly borrowed from the carriage has a poor braking effect. As the speed of the car increases, it can stand up to become a must-have performance of the car. In 1900, William Maybach designed the first car drum brakes. Soon, the brake system became a must-have configuration on the car.
At the same time, today's popular disc brakes came out at the end of the 19th century. In 1902, British engineer Frederick William Lanchester designed the car disc brakes and applied for a patent. Lanchester became the first car to be equipped with a disc brake. However, due to the limitation of the manufacturing level of metal materials, the brake pads in the disc brakes were made of copper, and the harsh road conditions made the brake pads of copper wear quickly, so the disc brakes at that time had a short life. As a result, disc brakes were not popular at the time.
Although the car is equipped with a brake, the early car only has a brake on the rear wheel because the problem of the front and rear wheel braking force distribution is not solved. In 1909, Arrow Johnson invented the four-wheel brake system. With the improvement of technology, the four-wheel brake system became popular in the 1920s. Although the four-wheel brake system is used, the braking effect is not very satisfactory, and the problem lies with the drum brake. Although the cost of the drum brake is cheap, the braking force stability is poor, and the braking force varies greatly under different road conditions, and the driver is not easy to control.
Moreover, due to poor heat dissipation performance, a large amount of heat is accumulated during the braking process, which is prone to heat exhaustion and causes a decrease in braking efficiency. Faced with these inherent shortcomings of drum brakes, the designer turned his attention to other brakes. With the advancement of the metalworking manufacturing process, it is possible to manufacture disc brakes with longer life and better braking effect, and the disc brakes once again enter the designer's line of sight.