The secret of Stellantis to ensure that electric car brakes do not pollute
We already know that, in less than two years, the Euro 7 emissions standard will come into effect, and that electric vehicles are also in Europe's sights. Brake dust has become the number 1 obsession, so manufacturers and suppliers are looking for ways to reduce it. Stellantis also has its own solution.
It was believed that they would be outside the control of emissions by Brussels, but various scientific studies have confirmed the high degree of toxicity of the emissions generated by brakes in electric cars. These are under special scrutiny by European authorities, and they also have a series of requirements to meet in the new Euro 7 emissions standard.
The vast majority of manufacturers are involved in finding a formula that is cheap and does not require them to rely on suppliers. A mission that is more than complicated and to which many will be forced to yield, as component manufacturers are the most advanced in this area. Brembo already has a system that significantly reduces emissions, but Stellantis is one of those going solo and wants its own system.
Stellantis seeks a solution to brake dust from its electric vehicles
What has been leaked from the European patent registry and that Australian colleagues have found. A document detailing a solution that follows the steps of the Volkswagen group and its electric vehicles. Yes, part of the solution from the Franco-Italian giant involves returning to drum brakes, but with an added magnet.
The harmful emissions generated by brakes occur when the pad and the disc or the shoe and the drum friction, releasing a dust and particles that are extremely harmful when inhaled. The methods of collecting them vary, with some opting for special filters. However, Stellantis' bet is that the magnet will take care of collecting them, after all, these particles are metallic and, especially, iron, which is what most brake discs of normal cars are made of.
The regeneration of brakes and a magnet, the perfect solution?
The idea is interesting but raises significant doubts because, in the case of disc brakes, which remain exposed, retaining the particles becomes more than complicated, so the patent suggests coating the surface of the disc with a magnetic film. Even so, it would not be completely effective.
Nor would it be for the drum, because it is unknown where all the particles collected by the magnet would end up, a piece that would require continuous maintenance increasing costs for the customer's pocket. And even though in electric cars the maintenance of brakes is lower, due to the tremendous effectiveness of energy regeneration systems that increase the lifespan of the drums.
