Continuously Variable Transmission

CVT is a transmission which can change steplessly through an infinite number of effective gear ratios between maximum and minimum values. Continuously Variable Transmission.


CVT has been classified into Seven(10) types: 
1. Pulley Based CVT’S or Reeves drive 
2. Toroidal or roller-based CVT (Extroid CVT) 
3. Magnetic CVT or mCVT 
4. Infinitely Variable Transmission (IVT) 
5. Ratcheting CVT 
6. Hydrostatic CVTs 
7. Naudic Incremental CVT (iCVT) 
8. Cone CVTs 
9. Radial roller CVT 
10. Planetary CVT

Pulley Based CVT’S o In this most common CVT system , there are two V-belt pulleys that are split perpendicular to their axes of rotation, with a V- belt running between them.
Toroidal CVT’S o Toroidal CVTs are made up of discs and rollers that transmit power between the discs.

Hydrostatic CVT’S o Hydrostatic transmissions use a variable displacement pump and a hydraulic motor. All power is transmitted by hydraulic fluid.
 Infinitely Variable Transmission (IVT) o A subset of CVT designs are called infinitely variable transmissions (IVT or IVTs)
 Cone CVTs o A cone CVT varies the effective gear ratio using one or more conical rollers.

 WHY Use CVT……..? CVT MT 8.8 sec. 11.9 sec. 0-100 Km/h • The Continuously Variable Transmission (CVT) proved 35% more efficient than the Manual Transmission (MT). • With same car and engine, the CVT takes only 75% of the time to accelerate to 100km/h, compared to the MT.