IPP&T Magazine Online

Gearless-drive system the future of drive technology?

August 19, 2019  

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One company has developed a gearless-drive system that can significantly improve the efficiency and performance of electric cars, vehicles, ships, wind turbines, bicycles and machines.

The system ensures that all machines and vehicles will no longer require gears and oil; as a result, resistance decreases, efficiency increases and fewer parts and raw materials are needed.

“With this system, it feels like you are riding an electric bike on a regular bike,” said Harrie Essens, R&D director of Drive Technology Holland, based in the Netherlands.

At the first presentation of the drive system, the invention was wrongly compared with the traditional drive systems, which are still used in the automotive industry after 50 years.


“A traditional drive system consists of two axles, while CRS is single-axle,” Essens points out. “Also, our system does not drive gears; it is driven by a toothed belt and requires no oil, which is the case with traditional drive systems.”

With wind turbines, for example, a gearbox is no longer needed, which reduces the resistance and increases the efficiency.

“Our system ultimately resulted in a step-less variable gear system driven by a toothed belt. That did not seem technically possible, but we have shown that it is possible,”┬ásaid Jan de Wijs, director of design engineering. “That makes it extra special.”

The most important part of this is the Controlled Rotation System, which allows step-less transmission without the use of gears, chains and oil.

The system is driven by a toothed belt. This can be done by a conventional toothed belt or a toothed belt (Adaptive Drive Belt), which uses newly developed slide elements.

The drive system is single-axis and consists of two adjustable conical discs that are self-centring, with the use of slide elements. These conical discs are both hydraulically moved away and towards each other, causing the slide elements to move up or down by a sliding technique. This creates a larger or smaller circle for the toothed belt, resulting in an acceleration or deceleration.


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