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CONTENTS
INTRODUCTION
HISTORY
NEED OF TRANSMISSION
CVT
TYPES OF CVT
USE OF CVT
HOW DOES CVT WORK?
BELT DESIGN
ADVANTAGES AND DRAWBACKS
CONCLUSSION

INRODUCTION
CVT IS AN EMERGING AUTO MOTIVE TECHNOLOGY THAT
OFFERS A CONTINUUM OF GEAR RATIOS BETWEEN HIGH
AND LOW EXTREMS. TODAY CONTINUOUSLY VARIABLE
TRANSMISSION (C V T) HAVE LURED A GREAT DEAL OF
AUTOMOTIVEMANUFACTURERS AND CUSTOMERS.

HISTORY
CONTINUOUSLY VARIABLE TRANSMISSION(CVT)
DESIGN WAS DEVELOPED BY INVENTER DR. JAN NAUDE.
CVT WAS FIRST PATENTED IN EUROPE IN 19TH CENTURY
THE FIRST PATENT FOR A TOROIDAL CVT WAS FILED AT
THE END OF THE CENTURY WAS DESIGNED AND BUILT
BY DUTCH HUB VAN DOORNE.

NEED OF TRANSMISSION
THE TRANSMISSION TAKES THE POWER FROM THE ENGINE TO THE WHEEL,IN DOING SO ACTUALLY MAKES THE VEHICLE USABLE.

 Allow the vehicle to start from rest, with the engine running continuously.

 Let the vehicle stop by disconnecting the drive when appropriate.

 Enable the vehicle to start at varied rates, under a controlled manner.

 Vary the speed ratio between the engine and wheels.

Allow this ratio to change when required.

Transmit the drive torque to the required wheels.

CONTINUOUSLY VARIABLE TRANSMISSION (CVT)
Continuously variable transmissions (CVT) offer a continuum of gear ratios between desired limits. Which allows the engine to operate more time in the optimum range given an appropriate control of the engine valve throttle opening (VTO) and transmission ratio. CVT transmission operates by varying the working diameters ofthe two main pulleys in the transmission .or by changing belt thickness