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Electronic parking brake

From Wikipedia, the free encyclopedia

Electric park brake in the center console in a Volkswagen Golf Variant

An electronic parking brake (EPB), also known as an electric parking brake or electric park brake, is an electronically controlled parking brake, whereby the driver activates the holding mechanism with a button and the brake pads are electrically applied to the rear wheels.[1] This is accomplished by an electronic control unit (ECU) and an actuator mechanism. There are two mechanisms that are currently in production, Cable puller systems and Caliper integrated systems.[2] EPB systems can be considered a subset of Brake-by-wire technology.

First installed in the 2001 BMW 7 Series (E65), electronic parking brakes have since appeared in a number of vehicles.

Functionality

Apart from performing the basic vehicle holding function required of park brakes, the EPB systems provide other functions like automatic release of the park brakes when the driver presses the accelerator or slips the clutch, and re-clamping using additional force on detection of vehicle motion.[2] Further, the hill-hold function, which applies brakes to prevent roll-back when pulling away on a gradient, can also be implemented using the EPB.[3]

Implementation

The implementation of the control logic for the actuators is carried out by either using a stand-alone ECU[4] or by integrating it in the ECU for electronic stability control.[5]

Standards

The design of electric park brakes in the United States should be compliant with:

References

  1. ^ Hackenberg, Ulrich (November 2012). "Brakes The Art of Slowing Down" (PDF). www.volkswagenag.com. Archived from the original (PDF) on 19 December 2013. Retrieved 21 May 2020.
  2. ^ a b Cheon, J.S; Jeon, J.W.; Jung, H.M.; Park, I.U.; Park, C.H.; Yeo, T.-J. (13 October 2009). "Main Design Factors and Unified Software Structure for Cable Puller and Caliper Integrated Type Electric Parking Brakes" (PDF). www.sae.org. Archived from the original (PDF) on 19 December 2013. Retrieved 21 May 2020.
  3. ^ "Electronic Parking Brake". www.volkswagen.co.uk. Archived from the original on 6 October 2013. Retrieved 21 May 2020.
  4. ^ "Electric Park Brake". www.trw.com. Archived from the original on 19 December 2013. Retrieved 21 May 2020.
  5. ^ "VDA".
  6. ^ "§ 571.105 Standard No. 105; Hydraulic and electric brake systems" (PDF). www.govinfo.gov. 1 October 2011. Retrieved 21 May 2020.
  7. ^ "§ 571.135 Standard No. 135; Light vehicle brake systems" (PDF). www.govinfo.gov. 1 October 2011. Retrieved 21 May 2020.
  8. ^ "Uniform provisions concerning the approval of passenger cars with regard to braking" (PDF). www.unece.org. 4 October 2011. Retrieved 21 May 2020.
This page was last edited on 12 September 2022, at 01:28
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