Particulate emissions are a problem to be solved also when we talk about the braking system, which result from the friction between the pad and the disc. Among the solutions to this problem, as in the exhaust systems, particle filters are being developed for the brakes, but Brembo proposes, as an alternative, to alleviate the problem with the new discs greentive that is developing.
Brembo Greentive (a merger between Green, or green, and Distinctive, distinctive) promise to reduce particulate emissions from discs by up to 50%, while offering a longer life cycle due to their greater resistance to corrosion.
To achieve this, the surface of the steel disc is coated with a layer of tungsten carbide. If tungsten carbide sounds vaguely familiar, it's because nearly three years ago we saw Porsche unveil a braking system for the Cayenne Turbo that used the same coating. Porsche named them PSCB or Porsche Surface Coated Brake.
If Brembo's initial goal of developing the Greentives was to reduce disc corrosion, the lower particulate emission when in use — up to 50% less — turned out to be a very welcome benefit. However, for this to happen it is necessary to combine these discs with pads with specific friction material.
In addition to the environmental and longevity benefits, Brembo also defends the aesthetic benefits of Greentives. The coating gives the brake disc a mirror finish which, according to Brembo, “expresses elegance and personality”.
Thinking about trams
This new development by Brembo, above all its focus on guaranteeing greater anti-corrosion protection for discs, is due to the transformation that we are witnessing in the automotive industry, which is determinedly following the path of electrification. Electric cars make much less use of mechanical brakes as they come with effective regenerative braking systems.Subscribe to our newsletter
In other words, discs and pads end up having a substantially longer life cycle than in a car with a combustion engine that only has a conventional braking system. It is therefore imperative to ensure that the braking system stays “in shape” for much longer. This coating promises the necessary longevity of the discs without them deteriorating due to corrosion.
When will we see them?
The new Brembo Greentive will soon appear in a production model. However, as they are more expensive than conventional steel discs (but much cheaper than carbon-ceramic discs), let's see them first in the luxury segment or in niche vehicles. In the long term, economies of scale should allow this solution to reach the premium segment of the market.