infinitely variable drive
Description
WHY IVD HAS GREAT POTENTIAL?
LOW FRICTION LOSS
In comparison to belt systems, where efficiency is low at high speeds, IVD can achieve low friction loss at maximum speeds.
MECHANICAL SOLUTION
IVD concept maintains a direct contact without relying on friction based mechanisms. System simplicity and direct mechanical feedback offers continuous manual gear ratio selection.
Because of the solid structure, IVD requires less complicated controllers, which are needed in alternative solutions to improve system response.
Infinite ratio
In alternative systems, the infinite ratio is only achievable using friction based mechanism. Entirely mechanical IVD concept is thus reducing friction loss in the system.
Furthermore, for initiating a smooth output, a hydraulic torque actuator is used in some alternative solutions, resulting in a decrease in efficiency during operating conditions by about 15 percent. The achievable gear ratios are limited in alternative solutions, while infinite ratios are available with the proposed IVD concept.
Reverse ratio
Proposed IVD structure provides stepless gear ratios from forward to reverse in one complete purely mechanical setup with just one clutch or breaking mechanism which for example could be coupled to electric motor generator in hybrid setups.