Car, frequently used in our daily life of transportation, compared to the buses and subways, private cars is more convenient and quick. From going out to buy fruit to self-driving travel, cars play an increasingly important role in our life. Cars are like our best friends, but do you really know your partner? As a professional auto parts manufacturer, today we will share a little knowledge about cars.
Brake pads are important parts of a car’s braking system. In other words, brake pads are the patron of drivers and passengers. A set of good brake pads, whether expensive or not, can be called the best brake so long as brake the car at a critical moment. In fact, the brake pads cost is not very high which means that, the price of a set of brake pads is very low.
When it comes to brake pads, we will think of the friction coefficient of the brake pads. Is the friction coefficient of the brake pads the higher the better? The answer is: NO
The friction coefficient of brake pads does affect the braking performance of the car, and neither high nor too low is good. When cars need emergency braking during the process of high speed, if friction coefficient was too low, brake will not be flexible. If coefficient of friction was high, there will be a wheel lock, which can cause the vehicle collision or skid, impact on road safety seriously. According to national standards, brake pads are best suited to work in a high-temperature environment of 100-350 degrees Celsius. Some low-quality brake pads, when the temperature reaches 250 degrees Celsius, will have a sharp drop in the friction coefficient, which will cause the brakes to completely fail.
The friction coefficient of brake pad is divided into several levels: EE, 0.25-0.35 is suitable for the European and American cars; brake pad is large, low friction coefficient. FF class: 0.35-0.45 international standard friction coefficient. GG: 0.45-0.55 applicable European models, especially German cars. The friction coefficient is higher because of the speed limit in Germany. HHH: 0.55-0.65 brake pads are used to allow the friction coefficient to change at a high temperature. Generally, the friction coefficient increases and decreases by 0.08 at a time of 100 degrees, and then decreases by 0.14 at 350 degrees. According to the SAE standard, the brake disc manufacturer will select the FF rated coefficient and the friction coefficient is 0.35-0.45.
All in all, the friction coefficient of the brake pad is not the higher and better. The key is to choose the most suitable and best brake pad according to the specific situation of the car.