Principle of braking system
Generally, there are two sets of braking systems: brake pedal and hand brake. The brake pedal is suitable for the deceleration of the vehicle during driving, and it is also suitable for the temporary parking when the driver does not get off; The handbrake often stops for a long time, or it can be temporarily stopped for a long time to release the right foot. The working principle of the brake pedal is that the brake master cylinder is controlled by the brake pedal, and the brake caliper is controlled by the brake fluid of four wheels at the same time, so that the brake pad presses the brake disc with appropriate force to achieve the purpose of deceleration, and the braking force is adjustable; The traditional handbrake transmits force through the cable and exerts force on the rear wheel. On the frequency of use, the brake pedal is higher than the handbrake.
Braking methods of old drivers
Beginners will inevitably get stuck when braking and jump into the car, which will not only be uncomfortable for the passengers in the car, but also have certain safety hazards for the surrounding vehicles. The direct cause of this situation is that the driver quickly stepped on and released the brake pedal. What do old drivers do? They all start to collect oil and slow down when the braking distance is far away, and control the speed through the throttle to save fuel. When the braking distance is close, they slowly step on the brake pedal to make the deceleration process smooth, and the passengers in the car will not be affected by inertia and have obvious forward thrust.
Correct use of brake pedal
Emergency first and then release brake method
In case of emergency, you should quickly press the first brake pedal, then slowly press the second brake pedal, then slowly lift the brake pedal according to the actual situation, and then adjust the shift control handle to the appropriate gear according to the vehicle speed to cooperate with the accelerator pedal to resume normal driving.
The characteristics of this braking method
When the car nods with the inertia of the brakes, the passengers will inevitably bend forward. At this time, if the brake pedal is released immediately, passengers will inevitably lean backwards with the inertia of the car. This kind of leaning forward and leaning back is easy to make people sick and vomit. Therefore, it is necessary to supplement the second foot brake when the car nods and starts to return, and it cannot return quickly. Then slowly release the brake pedal to let the car and passengers recover gradually, which can reduce the back and forth swing caused by the rapid change of vehicle speed and will not make passengers feel uncomfortable.
Continuous braking method
In case of emergency, release the accelerator pedal in advance to slow down the car, and at the same time, continuously and slowly press the brake pedal. This kind of early deceleration braking can reduce the impact caused by emergency braking.
Braking origin
When the car was first invented, the power of the car was insufficient and the design of the transmission system was not perfect, so the speed was slow and the structure was simple. Most cars have no braking system. Other vehicles are equipped with braking systems that directly borrow the hand brake of the carriage, and the braking effect is very poor. With the improvement of car speed, standing up at any time has become an essential performance of cars.
1900, wilhelm maybach designed the earliest automobile drum brake. Soon, the brake system became a necessary configuration on the car. At the same time, the popular disc brake came out at the end of 19. 1902, the British engineer Frederick William Lanchester designed the automobile disc brake and applied for a patent. Lanchester became the first car with disc brakes. However, due to the limitation of the manufacturing level of metal materials, the brake pads in the disc brakes were all made of copper at that time, and the poor road conditions made the copper brake pads wear quickly, so the service life of the disc brakes was short at that time, which led to the disc brakes not being popularized at that time.