Vacuum servo

A vacuum servo is a component used on motor vehicles in their braking system, to provide assistance to the driver by decreasing the braking effort. In the US it is commonly called a brake booster. A vacuum servo is a component used on motor vehicles in their braking system, to provide assistance to the driver by decreasing the braking effort. In the US it is commonly called a brake booster. Albert Dewandre (Liege, Belgium), an engineer and business owner, was the inventor of servo-brake or brake booster system “Dewandre” in 1927. It is a brake boosting system that uses the depression caused by the suction in the intake manifold of an internal combustion engine to reduce the pressure on the brake pedal. The advantage of the Deandre system is twofold: a softer push on the brake pedal, but also a notably shorter braking distance. His invention was manufactured and sold through the Robert Bosch company.