Welcome to the ISS transmission's website.

The Intelligent Synchronic Shift (ISS) transmission is a constant-mesh transmission that provides instant and effortless gear shifting without operating the clutch.

During gear shifts, electronic units control the transmission and the engine as to minimize speed differences between involved gears –and the torque transmitted through them–. The result is effortless and on-the-fly coupling and decoupling of gears, without requiring any clutch operation.

The ISS transmission can be used in a variety of automotive and industrial applications, and is mainly intended for automotive vehicles with internal combustion engines.
 

Technical description

The technical details of the ISS transmission are contained in Patent US7599778 (PDF file).
 

Contact the inventor

Juan Zak

juanzak at yahoo dot com  (please replace the underlined words with @ and . respectively)

Roskilde, Denmark