Is the higher the friction coefficient of the brake pads better?
The friction coefficient of brake pads refers to the parameter of the friction efficiency of brake pads, which is an important factor to measure the quality of brake pads. Generally speaking, the coefficient of friction is a numerical value that represents the magnitude of friction under the same pressure conditions. The larger the coefficient of friction, the greater the friction under the same pressure, and the easier it is to brake the car.
When a vehicle needs emergency braking at high speeds, the low friction coefficient makes the braking distance longer under the same pedal force, which can easily lead to accidents; If the friction coefficient is too high, the tires will lock up, causing the vehicle to slip, posing a serious threat to driving safety.
1.High friction coefficient ≠ high safety coefficient
Currently, brake pads on the market are generally labeled with a friction coefficient between 0.34 and 0.42. The market generally believes that a higher coefficient of friction is safer. Although a higher coefficient of friction often provides stronger braking force, it can sometimes have a negative effect, especially when a car urgently brakes at high speeds. A high coefficient of friction may cause the wheels to lock up, causing the vehicle to spin and slip, leading to safety accidents.
Otherwise, why do car factories install an ABS system on their cars?
2.High friction coefficient ≠ good braking performance
The key to the braking performance of brake pads is not to see how high the friction coefficient marked on the brake pads is, but to see whether their friction coefficient can remain stable under various extreme road conditions such as high speed, high temperature, dripping water, mountain roads, and continuous emergency braking.
Some low-quality products can achieve high friction coefficients by adding wear-resistant materials, but In emergency situations, the braking force rapidly decreases to the point of losing braking ability.
3.Excessive friction coefficient affects other performances
The most basic core function of brake pads is to brake the car, but in addition, our requirements for performance in various aspects such as noise, dust, and wear that may be caused during the braking process are gradually increasing.
Generally speaking, if the friction coefficient of the brake pads is too high, it will increase the wear on the brake discs, causing damage and dust falling, and often making brake noise more likely. At the same time, overly sensitive foot feel can also increase the jerky feeling when braking, affecting comfort.
So, the friction coefficient of the brake pads is based on the actual conditions of different vehicles and the comprehensive driving.
The results of multiple technical indicators such as speed, torque, inertia, braking distance, and comfort, which have been verified through theoretical and experimental tests, can maximize the matching of the original vehicle and unleash the appropriate braking performance of the brake pads.
