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ELECTRIC PARKING BRAKE (EPB): COMPONENTS, WORKING PRINCIPLE, AND TYPES





The Electric Park Brake works as a traditional water-powered brake for standard administration brake applications, and as an electric brake for stopping and crisis breaking
Electric Park Brake (EPB) is a caliper with an extra (engine on the caliper) that works the stopping brake. The EPB framework is electronically controlled and comprises of the EPB switch, the EPB caliper and the electronic control unit (ECU).





The electric stopping brake or the EPB is a propelled form of traditional stopping brake or handbrake. At times, individuals additionally allude to this framework as ‘Electronic Parking Brake’. In fact, this framework is a sub-some portion of ‘Brake by Wire’ framework.
The principle capacity of leaving brakes is to maintain a strategic distance from the movement of the vehicle when left. Furthermore, these brakes additionally assume a critical job in maintaining a strategic distance from in reverse movement of the vehicle which resumes proceeding onward an incline. For the most part, leaving brakes work just on the back wheels of a vehicle.

EPB usefulness depends on four components:

  1. control switches,
  2. a wheel speed sensor,
  3. a power sensor, and
  4. electric engines.
Together, this screen an assortment of info flags and decide when to apply or discharge the brakes.

Parts

Be that as it may, in Electric Parking Brake, no such link association exists. Rather, it works with the assistance of following fundamental segments:
  1. Electronic Brake Module
  2. An actuator or electric engine
  3. Electric Switch in the lodge

WORKING PRINCIPLE

Traditional stopping brakes utilize a link that associates handbrake switch and brake shoes. At the point when the driver works the switch, strain in the link increments subsequently constraining the brake shoe (or cushions) on brake drum (or plate). Hence, wheels can’t move further.
At the point when the driver works the switch, it sends a direction to Module which detects that stopping brakes are required to be worked. Afterward, this module directions the actuators or electric engines introduced in the brake calipers to work. In this way, brake cushions are constrained on the plate along these lines limiting the development of wheels.
Because of the utilization of electronic parts, the activity of this framework is practically quick and effective. Likewise, it enhances the dependability of braking as a result of the nonattendance of mechanical association. This brake deactivates naturally when the driver presses the quickening agent pedal. Some vehicle makers likewise incorporate Assist work with this framework.

Kinds OF EPB

Link pull frameworks

The link pull framework is essentially an improvement of the conventional switch and link strategy. As the switch is worked, an engine, or engines, pull the link by either moving it on a drum or utilizing an inside strung apparatus on a winding joined to the link. The electronic stopping brake module appeared as figure 1, otherwise called the EPB actuator, is fitted to some Range Rover and Landrover models. The leaving brake can be discharged physically on general vehicles. In the wake of expelling a plastic spread or comparative, pulling a wire link circle will let off the brake.

Electric-pressure driven caliper frameworks

These sorts are generally utilized as a component of a bigger control framework, for example, an electronic dependability program (ESP).
At the point when the driver presses the change to actuate the stopping brake, the ESP unit naturally produces weight in the slowing mechanism and presses the brake cushions against the circle. The calipers are then secured position by an electrically controlled solenoid valve. The caliper remains bolted with no requirement for water driven weight. To discharge the brake, the ESP quickly produces weight once more, somewhat more than was expected to bolt the caliper, and the valve is discharged.

Full electric drive-by-wire frameworks

The drive-by-wire framework appeared in figure 3 was created by Continental. It utilizes an electric engine (3) and gearbox to apply weight on the cushions and in this way on to the plate. A key segment is the stopping brake lock. This resembles a wrench and it keeps the weight in the cylinder from turning the engine – and it along these lines keeps the brakes connected.

Favorable circumstances And Disadvantage

Favorable circumstances

• Modular design, adaptable clip burden, and strength with decreased hysteresis
• Significant weight investment funds contrasted with mechanical park stopping mechanisms to help improve efficiency and diminished discharges
• Vehicle inclusion from little vehicle to light truck portions
• Electronic control takes into account reconciliation with other security advancements
• Pioneered EPB innovation in 2000 and now in the fifth era with in excess of 90 million EPB calipers on world roadways
• The reaction time of this framework is short.
• The task is profoundly solid.
• Improves control of the vehicle while beginning from stop condition on an incline.

Inconveniences

  1. This framework is expensive.
  2. It needs a gifted proficient for investigating.




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