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The IVT (Infinitely Variable Transmission) comprises a torque controlled full toroidal traction drive Variator in a two-regime configuration. The Variator itself is the core of the IVT and consists of two engines driven input discs and two output discs which are ultimately connected to the road wheels. Between the two sets of discs are six rollers – three per cavity. These two sets of three rollers transmit power between the toroidal discs. Force is applied to the rollers via hydraulic cylinders which reacts torque between the input and output discs.
The unique characteristic of the Variator is ‘Torque Control’ rather than ‘Ratio Control’. Transmissions are traditionally ratio controlled devices where a specific ratio is selected which results in an engine speed and wheel torque. The IVT is torque controlled as the desired wheel torque and vehicle speed are selected and the ratio of the transmission changes independently to suit the demand. Therefore, rather than selecting a specific ratio, the rollers “self steer” themselves in response to the speeds of the input and output discs.
Producers everywhere are making the shift to IVT. This revolutionary transmission technology brings efficiency, consistent power, and user-friendly controls to gain more productivity in field operations.