![]() This speed difference is used by the ABS module to determine how to apply individual brakes to bring your car to a safe, controlled stop. If your wheels lock up because you slam on the brakes, one or more wheels will be spinning at different speeds. Vehicle equipped with an anti-lock braking system (ABS) have wheel speed sensors which detect how fast each wheel is spinning. It is connected to the entire braking system on the inside. This is the pedal next to the gas pedal that you step on to slow down the vehicle. Brake Booster Check Valve Function and Bad Symptoms.4 Symptoms of a Bad Brake Booster and Replacement Cost.This makes it easier to slow down the vehicle. A brake booster uses engine vacuum or a vacuum pump to amplify the foot pressure that you place on the brake pedal. The brake booster (also called a vacuum servo) is part of the power braking system. The brake shoe is what rubs against the interior of the brake drum when you step on the brake. This is the alternative to the brake pad when you have a drum brake system. When you step on the brake, these pistons push on the brake pads with a great force. ![]() The hydraulic pressure from the master cylinder pushes brake fluid down the brake lines and into one or more pistons housed in the brake caliper. This is achieved by using hydraulic pressure. The Best Brake Pads, Rotors and Calipers for Your Carīrake calipers provide the clamping force that pushes the brake pad into the brake rotor.Operating a brake pad outside its optimum heat range will likely increase your stopping distance. In a disc brake system, the brake pad and its caliper create friction as they rub against the spinning brake disc.īrake pads are made out of different materials, that affect their longevity and optimum heat range. As the drum component spins, the brake shoe goes inside and pushes against it when you step on the brake pedal. The brake drum is the alternative to a brake rotor when you have a drum brake system. Rear brakes tend to be solid rotors, since rear brakes typically do less of the work to stop a vehicle. These vents direct airflow into the rotor, cooling the rotor as it spins. Vented rotors have vents or vanes between the two discs. To aid in heat dissipation, many rotors are vented. Cast iron is very heavy but can absorb a lot of heat. This, in turn, slows down the wheel and vehicle.īrake rotors are typically made out of cast iron. The brake pad and caliper rub against the rotor and create the necessary friction to slow down the disc. 2) Brake Rotor (Disc Brakes)Įach wheel has a brake rotor which spins while the vehicle is moving. More pressure will slow down the vehicle more quickly. The master cylinder works by managing the amount of hydraulic pressure that is placed on the hydraulic fluids. ![]() Others use multiple cylinders per wheel for maximum redundancy in case of a failure. Some vehicles will use one cylinder per axle (front/rear split). That way, if one cylinder fails, the other cylinder can still slow down the car and allow the driver to maintain a reasonable amount of control. Typically each cylinder manages the braking ability of one front wheel and the opposite rear wheel. Most master cylinders are actually split into two or more individual cylinders for safety reasons. The brake master cylinder pushes hydraulic fluid down into the brake lines from the brake fluid reservoir. Most modern vehicles have disc brakes on all four corners, but some economy cars still use drum brakes in the rear. We have included both the components of the disc and drum brake systems. See Also: 140+ Parts of a Car (Ultimate Guide)īelow is a list of the main parts of a car brake system. This was used on cars in the early 20th century, and is still used on bikes today. When the driver stepped on the brake pedal, it pulled on the cable and allowed the brake drum spinning to slow down. In the classic mechanical brake system, there was a cable which connected the brake pedal and brake shoe assembly together. Power braking allows you to apply just a little bit of pressure to the brake pedal in order for the vehicle to slow down. ![]() This makes braking so much easier for drivers. These systems use a brake booster that amplifies the force you apply to the brake pedal. Modern car brake systems are referred to as power brake systems. A vehicle will have either a disc braking system or drum braking system to create the necessary friction for this to take place. The brakes on your car work by converting the kinetic energy of movement into thermal energy (heat).Įach time you step on the brake pedal, the speed of the spinning wheels underneath your vehicle is reduced proportionately to how much pressure you apply to the pedal. The brake system in your vehicle allows the driver to slow down or stop in a consistent and reliable manner.
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