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Bosch teams with Cannondale on e-bikes

Posted: 27 May 2010 ?? ?Print Version ?Bookmark and Share

Keywords:e-bike? powertrain? sensor? electric motor?

Bosch is entering the bicycle industry with a new high-performance electric drive for e-bikes and is tapping Cannondale as partner in system development for the first generation.

"We are an ideal supplier for bicycle manufacturers because Bosch stands for innovation and its key competence areas in the automotive industry, like the electronic control techniques," said says Rainer Jeske, head of Bosch powertrain systems eBike. "With exciting riding experiences, advanced technology, and visually attractive system components we suit the action to the slogan: Boschinvented for life. We are happy to partner with Cannondale who shares our ambitions."

"Cannondale is known for being at the forefront of innovation in the bicycle industry. As we look to align with strategic partners, we work with likeminded companies that are pushing the limits with new technologies that can advance the riding experience," said Bob Burbank, general manager for Cannondale. "With Bosch we strive to create a better transportation option with a unique new technology. Bosch is a leader in the industrial engineering space and Cannondale is a leader in the bicycle industry; together we can develop the most progressive products on the market."

Cannondale will, besides other brand manufacturers, present the first e-bike models with Bosch drive early September 2010 at the international bicycle trade show "Eurobike" in Friedrichshafen, Germany.

The headquarters of the new Bosch e-bike product group is in Reutlingen, Germany. The components of the system are the drive unit with sensors, the battery pack including its charger, and the control computer on the handlebars (human/machine interface).

The high quality and reliability of the new electric drive are based on Bosch's extensive experience with technologically related components. The battery pack, for example, uses the same Li-ion technology as the mini-battery screwdriver "Ixo", the most-sold power tool in the world.

With the modular e-bike powertrain system, bicycle manufacturers receive new capabilities for profiling. For example, the low space requirements of the system components provide layout freedom for both the design and the position of the battery pack. Outstanding drive performance is provided by the strong motor, the favorably low vehicle center of gravity, a low overall weight and the powerful battery of the Bosch e-bike system.

A decisive feature for a positive riding experience with e-bikes is the situationally correct detection of the rider's desire for motor support while pedaling. In the Bosch drive, this task is handled by three sensors for pedaling force, pedaling frequency, and speed of travel. Depending on the sensor data, the integrated controller calculates the force with which the electric motor will help pedaling. The level of support can be customized by selecting one of up to four driving programs. The result is highest efficiency in the implementation of the rider's wishes and the ideal range in every circumstance.

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