iBooster
IBooster je inovativní brzdový posilovač vyvinutý firmou Bosch. Pracuje na elektromechanickém principu, a tudíž se obejde bez podtlaku vytvářeného spalovacím motorem.
One of the problematic components of today’s hybrid cars and electric vehicles is the braking system. Brake systems are usually set up so that during deceleration they first regenerate braking energy, and only then apply the brakes. The onset of full braking force is therefore not completely continuous, or is slow in the interest of smoothness. For this category of vehicles, Bosch has developed a new electromechanical brake booster called the iBooster.
The newly developed brake booster operates on a purely electromechanical principle. Compared to classic pneumatic (vacuum) solutions, this method allows brake pressure to be increased up to three times faster and with significantly greater precision. This offers a major advantage not only for emergency braking functions but also for the subtle automatic braking needed in traffic jams, as up until now the pressure in these situations was generated by the ESP pump. The iBooster can also work with adaptive cruise control systems (ACC) and perform automatic braking interventions.
When the new system is used in an electric vehicle, the iBooster brake booster initially prioritizes regenerative deceleration via the electric motor, which converts kinetic energy into electrical energy—up to a deceleration of 0.3 g, which covers normal braking maneuvers in everyday driving. If the driver applies greater pressure to the brake pedal, the system not only maximizes regeneration but, thanks to its two-stage design, also applies the brakes. The iBooster system therefore shortens the braking distance.
If the vehicle is equipped with a pre-collision system, the iBooster can generate maximum brake pressure in just 120 milliseconds in the event of an imminent crash! If the vehicle has selectable driving modes, the iBooster can adjust brake behavior depending on the chosen mode. Bosch leaves the configuration of braking characteristics fully in the hands of the individual car manufacturers’ developers.
