Four Dutchmen from the Eindhoven region invented, developed and patented a gearbox without any gear wheels. The inventors expect the new transmission to transform the automotive industry globally.
Compared to traditional transmissions, their revolutionary Controlled Rotation System (CRS) has a simple design, is maintenance-free, doesn't require lubricants and saves fuel because it lacks friction between the gears, making the technology highly sustainable.
The system has no gear wheels, but uses two discs powered by a strong belt. A digitally operated hydraulic oil pump and slide units help to increase or decrease the diameter of the discs, causing acceleration and deceleration respectively. The new transmission can be applied in cars, windmills, ships, motorbikes and any kind of machine.
The gearbox’s designers explain that the innovation fits perfectly in a green economy as it is easier, more compact and cheaper to assemble than traditional transmissions, and also saves energy, offers more gear possibilities and can be used in all kinds of applications.
Completely different in technique compared to the traditional gearbox that dates from the 19th century, the system, according to the designers can't be compared with existing CVT systems.
Originally developed for bicycles, the gearbox was inspired by an incident involving cyclist Andy Schleck who lost his bicycle chain during a crucial moment of the Tour de France while he was shifting gear. The designers then decided that they should put an end to gear wheels. The system developed for bicycles is called Dual Slide Gear and has two discs replacing all the gear wheels normally used for the gears.
After developing a prototype for bikes they modified the system for cars. The first prototype for the automotive industry measures 30 x 22 x 18 cm, and is most effective when used in electric cars because the electric engine can run at a constant rpm. By linking each wheel to a separate transmission, significant energy can be saved.
The inventors have founded Parts Services Holland Ltd to further develop their ideas and techniques for the gearbox.