Honda dual-clutch fully automatic motorcycle transmission

Honda has announced that it has developed Dual Clutch Transmission - the world’s first dual-clutch fully automatic motorcycle transmission system - for sportier large-displacement bikes.

This world’s first motorcycle dual clutch transmission provides riders with a sporty riding experience, combined with easy operation and superior transmission efficiency. It features a light, compact design that allows it to be combined with existing engines without substantial layout modification. Further, the new transmission delivers the precise acceleration control which riders require thanks to electronic control technology that helps ensure smooth, seamless gear changes.

In order to respond to rider demands in a broad range of situations, the transmission is equipped with three operating modes, including two full-auto modes (D-mode for regular operation and S-mode for sporty riding) and a 6-speed manual mode, which delivers the same shift feel as a manual transmission.

The new transmission features a dual clutch transmission configuration in which independent clutches are employed for the odd gears (1st, 3rd, 5th) and even gears (2nd, 4th, 6th), respectively. The two clutches operate alternately to effect gear changes. For example, when changing from 1st to 2nd gear, the computer detects the up-shift and engages 2nd gear, then releases the 1st-gear clutch while engaging the 2nd-gear clutch to achieve a seamless gear change. While some existing dual-clutch transmissions are bulky, the new system employs original technologies such as dual input shafts, an innovative in-line clutch design, and concentration of hydraulic circuitry beneath the engine cover to achieve a compact design. Compactness and lightness is further enhanced through the use of a simple shift mechanism design based on that of a conventional motorcycle shift drum. Optimised shift scheduling also contributes to efficient fuel economy, enabling Dual Clutch Transmission to deliver environmental, as well as smooth and enjoyable riding performance.

An interesting video featuring the riding technique with Dual Clutch Transmission has been posted by Honda on the popular YouTube website, for motorcyclists to easily find and view to understand the operation and riding experience with this all-new motorcycle technology.

Honda intends to introduce the new transmission to some of its sportier large-displacement motorcycles from 2010, as the manufacturer strives to continue to deliver motorcycles that match the needs of society and users’ lifestyles whilst furthering the enjoyment of riding and mobility.

For further information about any of Honda’s great range of scooters, off-road machines or road bikes, genuine parts, accessories, latest offers and forthcoming events, visit honda.co.uk.