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A disc brake is a type of braking system in which a disc that rotates in solidarity with the vehicle wheel is subjected to friction by brake pads that have a high coefficient of friction. Disc brakes are the most common type of braking system in use today. The brake pads are organised inside of a component known as the calliper, which is then solidly attached to the framework of the automobile. The brake pads are pressed against the disc by a hydraulic circuit with enough force to convert some or all of the kinetic energy of the vehicle while it is in motion into heat. This process continues until the vehicle comes to a complete stop or its speed is reduced, whichever occurs first.
Torque
Make use of the fact that the torque produced is equal to T = FX R when a force is applied to an object that is pinned at a distance R from the location where the force is applied. If you have any experience with levers or wrenches, you probably already know that the further away from the pin you push on them, the simpler it is to make them rotate. If you push while being further away from the pin, the amount of torque that you apply will be greater.
Imagine a situation in which a mechanic is applying 9 Newton-meters of torque by pushing on the end of a torque wrench that is 0.3 metres long.
Determine the tangential force using the formula. F = T/R = 9 Newton-meters/0.3 metres = 30 Newtons.
Brake Torque
When you want to slow down or stop the rotation of the wheels, you use something called brake torque to measure the amount of pressure that is applied to the rotors and/or the brake shoes. To come to a complete halt, a vehicle requires brake torque. When you apply pressure to the brake pedal, the callipers on the brakes squeeze the brake pads against the rotors of the brakes. The rotors come to a halt or slow down as a result of this. When this occurs, the axle and wheels come to a stop or gradually slow down depending on the situation. Brake torque is the amount of force that is applied to the rotors in order to slow them down.
If your vehicle does not have a sufficient amount of brake torque, it will not be able to stop as effectively as it otherwise could. If your vehicle has an excessive amount of brake torque, it will also have an excessive amount of stopping power. Ironically, the vehicle is unable to come to a stop as effectively as it ought to.
The amount of torque applied to the brakes is dependent on the following factors:
The effective radius is measured as the distance from the centre of the hub to the assembly consisting of the brake calliper and brake pads.
Regarding the dimensions of the brake pads.
The pressure that is applied by the calliper
In order to get the most out of the braking power of the vehicle, there needs to be a good balance between all three factors.
If the assembly of the calliper and brake pad is too large for the rotor, the brake torque will be excessively high. In that scenario, the tyres will try to lock up, and it will be difficult to control the vehicle with the brakes. This results in the tyres beginning to skid rather than coming to a complete and effective stop while rolling. It’s possible that the advanced driving assistance system in your vehicle will engage, which could make the situation even more dangerous. If the assembly of the calliper and the brake pad is too small for the rotor, the brake torque will be inadequate. In such a scenario, the brake pads either won’t be able to stop the rotor from turning or it will take them a very long time to do so. This results in a significant increase in the vehicle’s stopping distance, which is a very hazardous situation.
How to calculate Brake Torque
Direct measurement of the torque applied to the brakes is possible. This is something that engineers consider when designing braking systems. They take a number of factors into consideration, including the following:
- The rate of travel of the vehicle
- Tire pressure
- Response from the throttle.
- Steering angle
- Steering system
For the purpose of calculating brake torque, engineers use the following formula:
Brake torque = (the force exerted by the caliper) * (the effective radius of the system)
Using this formula, one can calculate the maximum amount of braking force that a single wheel is capable of applying.
Calculating brake torque would be extremely challenging for the vast majority of people. However, having a solid grasp of this idea is beneficial. If you find that your brakes have a tendency to grab, the torque applied to the brakes may be set too high. Altering this can be done in a number of different ways, but a pad change to something that is less aggressive is probably the best place to start. There are a few different routes you can take if you discover that the torque of your brakes is insufficient. You could either switch to a bigger caliper/brake pad assembly or upgrade to a better pad to use with it.
Conclusion
When you want to slow down or stop the rotation of the wheels, you use something called brake torque to measure the amount of pressure that is applied to the rotors and/or the brake shoes. To come to a complete halt, a vehicle requires brake torque. When you apply pressure to the brake pedal, the callipers on the brakes squeeze the brake pads against the rotors of the brakes.The rotors come to a halt or slow down as a result of this. When this occurs, the axle and wheels come to a stop or gradually slow down depending on the situation. Brake torque is the amount of force that is applied to the rotors in order to slow them down.
