Drag-free, quicker acting, fuel efficient & environmentally friendly brakes.

Twitter @airbackUK

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New! See Proof of Concept video.

Also view a USA market design.

As the automotive industry is forced to clean-up its act, 

AirBack® add-on brake technology offers pad retraction with fluid pre-fill & reduced brake pedal travel!

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Finally, great news for the industry, safety and the environment!

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AirBack’s IP protected design provides a cost effective solution to avoid WLTP (Worldwide Harmonised Light Vehicle Test Procedure) penalty that otherwise would result from brake drag. 

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Benefits of the system: 

  • Costs can be offset against reduced WLTP penalties.
  • Costs can also be offset against an increased market share. Motorists aware of media criticism of the industry and it's failure to act decisively will be influenced by manufacturers who address CO2/brake dust pollution.
  • Adds virtually no additional power drain as the system is switched on for just a few seconds (in the electronic controlled version), ideal for electric vehicles or formula ‘E’ racing.
  • Accelerator-linked motorsport version draws typically 7 watts @ 13.8 volts dc.
  • With minimal weight and size, this is an add-on feature that could resolve an inherent drag problem without major redesign, needing no tooling or other costs.
  • Considerably improves fuel efficiency and/or vehicle performance or range (with electric vehicles) by reducing rolling resistance.
  • Reduces brake related maintenance.
  • Reduces brake pedal travel (see Proof of Concept), improving brake efficiency and driver safety.
  • Helps minimise CO2 emissions and can completely remove needless brake drag pollution, estimated to be some 95% of drive time.
  • Can potentially reduce brake fluid boil-off on performance vehicles, by creating a controllable disk/pad air gap allowing disks to cool without heat transfer through the caliper pistons to brake fluid.
  • Works with both fixed or sliding caliper systems and all types of disk brake i.e. plain, slotted, cross drilled, fully floating, ceramic.

Description

There are two variations of this system:

Electronically controlled for highly efficient road-vehicle use and accelerator-linked for Motorsport use, having no electronic controls.

Both variations use the principle of differential air pressure between the master cylinder (MC) and that of atmosphere to controllably move the caliper pistons. The adjustable air pressure supply imbalance causes the brake fluid to either negatively or positively bring about the effect of brake retraction or the pre-fill of the brake fluid system, respectively. To ensure no cross contamination, a flexible diaphragm is arranged to separate the air supply and the brake fluid in the MC reservoir.

The design uses miniature compressors, valves etc. that fit in the palm of your hand that act independent of other 'on-board' brake-controlled systems. The AirBack® system may be used in conjunction with any type of disk or caliper with equal effect. Both designs are fail-safe in use with power interruption or removal mid-cycle, without compromise of normal brake effect.

During accelerator use, brake drag is removed by adding negative pressure to the MC.

With the accelerator linked system, upon release of the accelerator the compressor adds positive air pressure to the MC reservoir, pre-filling the fluid system, ready for use. Upon brake actuation the compressor switches off, ensuring that the system does not affect any other brake control system during its use. The compressor otherwise continues to be operational since Motorsport will require its continuous use.

With the electronically controlled system, upon release of the accelerator, a positive pulse of high pressure air is added for a few tenths of a second (adjustably) from a small reservoir, causing the caliper pistons to return to their former position and be in firm contact with their respective brake pad. The effect of this is to ensure a much reduced pedal travel and quicker brake response, improving safety.

The system is both highly effective and adjustable without detriment to either brake effect or brake feel, confirmed by road use.

Upon reuse of the accelerator the compressor will simultaneously replace both the negative and positive pressures before turning off indefinitely whilst awaiting the next cycle, signalled by the accelerator release.

Numerous tests have been conducted at elevated temperatures, with results that far exceed the expectations of all who observed the tests!

This image shows both prototypes of the system mounted on the master cylinder reservoir, for comparison purposes. Both systems can be seen to sit comfortably in the palm of your hand.

New! Proof of Concept video.

Direct link https://youtu.be/qnlvN8fiRUA (opens in a new page)

USA market design.

Direct link https://youtu.be/LiE2AprB310 (opens in a new page)

AirBack® Brake Technology - Environmentally Better by Design

Twitter @airbackuk

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